MR tapcon 230 pro Operating Instructions Manual

Dissemination and reproduction of this document and use and disclosure of its content are strictly prohibited unless expressly permitted. Infringements will result in liability for compensation. All rights reserved in the event of the granting of patents, utility models or designs. The product may have been altered since this document was published. We reserve the right to change the technical data, design and scope of supply. Generally the information provided and agreements made when processing the individual quotations and orders are binding. The original operating instructions were written in German.

Maschinenfabrik Reinhausen GmbH 2019 3 3550953/02 EN TAPCON® 230 pro Table of contents 1 Introduction......................................................................................................................... 8 1.1 Manufacturer.......................................................................................................................................  8 1.2 Subject to change without notice........................................................................................................  8 1.3 Completeness.....................................................................................................................................  8 1.4 Safekeeping........................................................................................................................................  8 1.5 Notation conventions ..........................................................................................................................  8 1.5.1 Hazard communication system............................................................................................................................. 9 1.5.2 Information system.............................................................................................................................................. 10 1.5.3 Instruction system ............................................................................................................................................... 10 1.5.4 Typographic conventions .................................................................................................................................... 11 2 Safety................................................................................................................................. 12 2.1 General safety information................................................................................................................  12 2.2 Appropriate use ................................................................................................................................  12 2.3 Inappropriate use..............................................................................................................................  12 2.4 Personnel qualification......................................................................................................................  12 2.5 Operator's duty of care .....................................................................................................................  13 3 IT security.......................................................................................................................... 14 4 Product description.......................................................................................................... 15 4.1 Scope of delivery ..............................................................................................................................  15 4.2 Function description of the voltage regulation ..................................................................................  16 4.3 Performance features .......................................................................................................................  17 4.4 Operating modes ..............................................................................................................................  18 4.5 Hardware ..........................................................................................................................................  19 4.5.1 Name plate.......................................................................................................................................................... 20 4.5.2 Operating controls............................................................................................................................................... 20 4.5.3 Display elements................................................................................................................................................. 22 4.5.4 Serial interface .................................................................................................................................................... 24 4.5.5 Modules............................................................................................................................................................... 24 5 Packaging, transport and storage .................................................................................. 27 5.1 Packaging.........................................................................................................................................  27 5.1.1 Purpose............................................................................................................................................................... 27 5.1.2 Suitability, structure and production ................................................................................................................... 27

Maschinenfabrik Reinhausen GmbH 2019 4 3550953/02 EN TAPCON® 230 pro 5.1.3 Markings.............................................................................................................................................................. 27 5.2 Transportation, receipt and handling of shipments...........................................................................  27 5.3 Storage of shipments........................................................................................................................  29 6 Mounting ........................................................................................................................... 30 6.1 Preparation .......................................................................................................................................  30 6.2 Mounting device................................................................................................................................  30 6.2.1 Flush panel mounting.......................................................................................................................................... 32 6.2.2 Wall mounting with mounting brackets................................................................................................................ 33 6.2.3 Cap rail mounting................................................................................................................................................ 34 6.2.4 Wall mounting ..................................................................................................................................................... 35 6.2.5 Removing the door.............................................................................................................................................. 36 6.3 Connecting device ............................................................................................................................  37 6.3.1 Cable recommendation....................................................................................................................................... 38 6.3.2 Information about laying fiber-optic cable ........................................................................................................... 39 6.3.3 Electromagnetic compatibility.............................................................................................................................. 39 6.3.4 Connecting cables to the system periphery ........................................................................................................ 44 6.3.5 Supplying the voltage regulator using auxiliary voltage ...................................................................................... 44 6.3.6 Wiring device....................................................................................................................................................... 44 6.3.7 Checking functional reliability.............................................................................................................................. 45 7 Commissioning................................................................................................................. 47 7.1 Setting the display contrast...............................................................................................................  47 7.2 Setting parameters ...........................................................................................................................  47 7.2.1 Setting the language ........................................................................................................................................... 48 7.2.2 Setting further parameters .................................................................................................................................. 48 7.3 Calibrating the analog input..............................................................................................................  49 7.4 Function tests ...................................................................................................................................  50 7.4.1 Checking control functions.................................................................................................................................. 51 7.4.2 Checking additional functions ............................................................................................................................. 52 7.4.3 Checking parallel operation................................................................................................................................. 55 8 Operation........................................................................................................................... 60 8.1 Key lock ............................................................................................................................................  60 8.2 General.............................................................................................................................................  60 8.2.1 Setting device ID................................................................................................................................................. 60 8.2.2 Setting the baud rate........................................................................................................................................... 61 8.2.3 Setting the switching pulse time.......................................................................................................................... 61

Maschinenfabrik Reinhausen GmbH 2019 5 3550953/02 EN TAPCON® 230 pro 8.2.4 Setting operations counter .................................................................................................................................. 63 8.2.5 Dimming display.................................................................................................................................................. 64 8.2.6 Activating/deactivating the automatic key lock.................................................................................................... 64 8.2.7 "Function monitoring" message for monitoring messages <30 V........................................................................ 65 8.2.8 Setting motor runtime monitoring........................................................................................................................ 66 8.2.9 Activate manual mode/auto mode....................................................................................................................... 68 8.2.10 Activating Local/Remote ..................................................................................................................................... 69 8.2.11 Setting the COM1 password ............................................................................................................................... 69 8.2.12 Setting the password duration............................................................................................................................. 70 8.3 NORMset..........................................................................................................................................  70 8.4 Control parameters...........................................................................................................................  72 8.4.1 Setting desired value 1...3................................................................................................................................... 74 8.4.2 Selecting a desired value.................................................................................................................................... 75 8.4.3 Bandwidth ........................................................................................................................................................... 76 8.4.4 Setting delay time T1 .......................................................................................................................................... 77 8.4.5 Setting control response T1 ................................................................................................................................ 78 8.4.6 Setting delay time T2 .......................................................................................................................................... 79 8.5 Limit values.......................................................................................................................................  80 8.5.1 Setting undervoltage monitoring U<.................................................................................................................... 80 8.5.2 Setting overvoltage monitoring U>...................................................................................................................... 83 8.5.3 Setting overcurrent monitoring I>........................................................................................................................ 85 8.5.4 Set undercurrent monitoring I<............................................................................................................................ 86 8.5.5 Activate/deactivate active power monitoring....................................................................................................... 87 8.5.6 Permitted tap positions........................................................................................................................................ 87 8.6 Compensation...................................................................................................................................  89 8.6.1 Line drop compensation...................................................................................................................................... 89 8.6.2 Z compensation................................................................................................................................................... 92 8.7 Transformer data ..............................................................................................................................  94 8.7.1 Setting the primary transformer voltage.............................................................................................................. 95 8.7.2 Setting the secondary transformer voltage ......................................................................................................... 95 8.7.3 Setting primary transformer current .................................................................................................................... 96 8.7.4 Setting the current transformer connection......................................................................................................... 96 8.7.5 Setting the phase difference for the current transformer/voltage transformer..................................................... 97 8.8 Parallel operation............................................................................................................................  101 8.8.1 Assigning CAN bus address ............................................................................................................................. 102 8.8.2 Selecting parallel operation method.................................................................................................................. 102 8.8.3 Assigning a parallel operation group................................................................................................................. 106

Maschinenfabrik Reinhausen GmbH 2019 6 3550953/02 EN TAPCON® 230 pro 8.8.4 Activating/deactivating blocking in simplex mode ............................................................................................. 107 8.8.5 Setting delay time for parallel operation error messages.................................................................................. 107 8.8.6 Configuring the maximum permitted tap difference .......................................................................................... 108 8.8.7 Activating/deactivating follower tapping without measured voltage .................................................................. 108 8.8.8 Activating/deactivating parallel operation.......................................................................................................... 109 8.9 Tap position capture .......................................................................................................................  109 8.9.1 Digital tap position capture................................................................................................................................ 109 8.9.2 Analog tap position capture............................................................................................................................... 110 8.10 Setting the desired voltage level remotely......................................................................................  113 8.10.1 Activate/deactivate setting the desired voltage level remotely.......................................................................... 113 8.10.2 Setting lower limit value for the desired value................................................................................................... 114 8.10.3 Setting upper limit value for the desired value .................................................................................................. 115 8.11 Configurable inputs and outputs.....................................................................................................  116 8.11.1 Linking inputs with functions ............................................................................................................................. 116 8.11.2 Linking outputs with functions ........................................................................................................................... 118 8.12 LED selection..................................................................................................................................  120 8.13 Information about device ................................................................................................................  122 8.13.1 Displaying info screen....................................................................................................................................... 122 8.13.2 Displaying measured values ............................................................................................................................. 122 8.13.3 Display calculated values.................................................................................................................................. 123 8.13.4 Carrying out LED test........................................................................................................................................ 124 8.13.5 Displaying status of the MIO card ..................................................................................................................... 124 8.13.6 Displaying status of the PIO card...................................................................................................................... 125 8.13.7 Displaying parallel operation............................................................................................................................. 126 8.13.8 Displaying data on CAN bus ............................................................................................................................. 127 8.13.9 Peak memory.................................................................................................................................................... 127 8.13.10 Resetting parameters........................................................................................................................................ 128 8.13.11 Displaying memory overview ............................................................................................................................ 129 8.13.12 Displaying event overview................................................................................................................................. 129 9 Fault elimination............................................................................................................. 130 9.1 No regulation in AUTO mode..........................................................................................................  130 9.2 Unexplained tap change.................................................................................................................  130 9.3 Man-machine interface ...................................................................................................................  131 9.4 Incorrect measured values .............................................................................................................  131 9.5 Parallel operation faults ..................................................................................................................  132 9.6 Tap position capture incorrect ........................................................................................................  132

Maschinenfabrik Reinhausen GmbH 2019 7 3550953/02 EN TAPCON® 230 pro 9.7 Customized GPIs/GPOs.................................................................................................................  133 9.8 General faults .................................................................................................................................  133 9.9 Other faults .....................................................................................................................................  134 10 Messages ........................................................................................................................ 135 11 Disposal........................................................................................................................... 137 12 Overview of parameters................................................................................................. 138 13 Technical data................................................................................................................. 142 13.1 Display elements ............................................................................................................................  142 13.2 Electrical data .................................................................................................................................  142 13.3 Dimensions and weight...................................................................................................................  142 13.4 Ambient conditions .........................................................................................................................  144 13.5 Electrical safety...............................................................................................................................  144 13.6 Electromagnetic compatibility .........................................................................................................  145 13.7 Environmental durability tests.........................................................................................................  145 13.8 Mechanical stability.........................................................................................................................  145 Glossary .......................................................................................................................... 146 List of key words ............................................................................................................ 147

8 3550953/02 EN TAPCON® 230 pro 1 Introduction This technical file contains detailed descriptions on the safe and proper in- stallation, connection, commissioning and monitoring of the product. It also includes safety instructions and general information about the prod- uct. This technical file is intended solely for specially trained and authorized per- sonnel. 1.1 Manufacturer The product is manufactured by: Maschinenfabrik Reinhausen GmbH Falkensteinstraße 8 93059 Regensburg, Germany Tel.: (+49) 9 41/40 90-0 Fax: (+49) 9 41/40 90-7001 E-mail: [email protected] Further information on the product and copies of this technical file are avail- able from this address if required. 1.2 Subject to change without notice The information contained in this technical file comprises the technical speci- fications approved at the time of printing. Significant modifications will be in- cluded in a new edition of the technical file. The document number and version number of this technical file are shown in the footer. 1.3 Completeness This technical file is incomplete without the supporting documentation. 1.4 Safekeeping Keep this technical file and all supporting documents ready at hand and ac- cessible for future use at all times. 1.5 Notation conventions This section contains an overview of the symbols and textual emphasis used.

9 3550953/02 EN TAPCON® 230 pro 1.5.1 Hazard communication system Warnings in this technical file are displayed as follows. 1.5.1.1 Warning relating to section Warnings relating to sections refer to entire chapters or sections, sub-sec- tions or several paragraphs within this technical file. Warnings relating to sections use the following format: WARNING Type of danger! Source of the danger and outcome. ►Action ►Action 1.5.1.2 Embedded warning information Embedded warnings refer to a particular part within a section. These warn- ings apply to smaller units of information than the warnings relating to sec- tions. Embedded warnings use the following format:  DANGER! Instruction for avoiding a dangerous situation. 1.5.1.3 Signal words and pictograms The following signal words are used: Signal word Meaning DANGER Indicates a hazardous situation which, if not avoided, will result in death or serious injury. WARNING Indicates a hazardous situation which, if not avoided, could result in death or serious injury. CAUTION Indicates a hazardous situation which, if not avoided, could result in injury. NOTICE Indicates measures to be taken to prevent damage to property. Table 1: Signal words in warning notices

10 3550953/02 EN TAPCON® 230 pro Pictograms warn of dangers: Pictogram Meaning Warning of a danger point Warning of dangerous electrical voltage Warning of combustible substances Warning of danger of tipping Table 2: Pictograms used in warning notices 1.5.2 Information system Information is designed to simplify and improve understanding of particular procedures. In this technical file it is laid out as follows: Important information. 1.5.3 Instruction system This technical file contains single-step and multi-step instructions. Single-step instructions Instructions which consist of only a single process step are structured as fol- lows: Aim of action ü Requirements (optional). ►Step 1 of 1. ð Result of step (optional). ð Result of action (optional).

11 3550953/02 EN TAPCON® 230 pro Multi-step instructions Instructions which consist of several process steps are structured as follows: Aim of action ü Requirements (optional). 1. Step 1. ð Result of step (optional). 2. Step 2. ð Result of step (optional). ð Result of action (optional). 1.5.4 Typographic conventions The following typographic conventions are used in this technical file: Typographic convention Purpose Example UPPERCASE Operating controls, switches ON/OFF [Brackets] PC keyboard [Ctrl] + [Alt] Bold Software operating controls Press Continue button …>…>… Menu paths Parameter > Control parameter Italics System messages, error messages, signals Function monitoring alarm triggered [► Number of pages]. Cross reference [► 41]. Table 3: Typographic conventions

12 3550953/02 EN TAPCON® 230 pro 2 Safety 2.1 General safety information The technical file contains detailed descriptions on the safe and proper in- stallation, connection, commissioning and monitoring of the product. ▪Read this technical file through carefully to familiarize yourself with the product. ▪Particular attention should be paid to the information given in this chapter. 2.2 Appropriate use If used as intended and in compliance with the requirements and conditions specified in this technical document as well as with the warnings in this tech- nical document and attached to the product, then the product does not present any danger to people, property or the environment. This applies throughout the product's entire life, from delivery through installation and op- eration to disassembly and disposal. The operational quality-assurance system ensures a consistently high qual- ity standard, particularly in regard to the observance of health and safety re- quirements. The following is considered appropriate use ▪The product must be operated in accordance with this technical file and the agreed delivery conditions and technical data ▪The equipment and special tools supplied must be used solely for the in- tended purpose and in accordance with the specifications of this technical file 2.3 Inappropriate use Use is considered to be inappropriate if the product is used other than as de- scribed in the Appropriate use section. Please also note the following: ▪Risk of explosion and fire from highly flammable or explosive gases, va- pors, or dusts. Do not operate product in areas at risk of explosion. ▪Unauthorized or inappropriate changes to the product may lead to per- sonal injury, material damage, and operational faults. Only modify product following discussion with Maschinenfabrik Reinhausen GmbH. 2.4 Personnel qualification The product is designed solely for use in electrical energy systems and facili- ties operated by appropriately trained staff. This staff comprises people who are familiar with the installation, assembly, commissioning and operation of such products.

13 3550953/02 EN TAPCON® 230 pro 2.5 Operator's duty of care To prevent accidents, disruptions and damage as well as unacceptable ad- verse effects on the environment, those responsible for transport, installa- tion, operation, maintenance and disposal of the product or parts of the prod- uct must ensure the following: ▪All warning and hazard notices are complied with. ▪Personnel are instructed regularly in all relevant aspects of operational safety, the operating instructions and particularly the safety instructions contained therein. ▪Regulations and operating instructions for safe working as well as the rel- evant instructions for staff procedures in the case of accidents and fires are kept on hand at all times and are displayed in the workplace where applicable. ▪The product is only used when in a sound operational condition and safety equipment in particular is checked regularly for operational reliability. ▪Only replacement parts, lubricants and auxiliary materials which are au- thorized by the manufacturer are used. ▪The specified operating conditions and requirements of the installation lo- cation are complied with. ▪All necessary devices and personal protective equipment for the specific activity are made available. ▪The prescribed maintenance intervals and the relevant regulations are complied with. ▪Installation, electrical connection and commissioning of the product may only be carried out by qualified and trained personnel in accordance with this technical file. ▪The operator must ensure appropriate use of the product.

Maschinenfabrik Reinhausen GmbH 2019 14 3550953/02 EN TAPCON® 230 pro 3 IT security Observe the following recommendations to operate the product safely. General ▪Ensure that only authorized personnel have access to the device. Use the device door lock for this purpose. ▪Only use the device within an ESP (electronic security perimeter). Do not connect the device to the Internet in an unprotected state. ▪Ensure that the device is only operated by trained personnel who are fa- miliar with IT security. ▪Do not assign any passwords that are easy to guess. The password should consist of upper-case letters, lower-case letters and numbers and should be 8 characters long. Commissioning Observe the following recommendations for device commissioning: ▪Set the password duration to 5 minutes or less [►Section 8.2.12, Page 70]. ▪Assign a password for the COM1 front interface [►Section 8.2.11, Page 69]. Operation Observe the following recommendations during device operation: ▪Do not leave the device unattended when the entered password is active. The password entered is active if the Parallel operation LED flashes. ▪Change the password at regular intervals.

Maschinenfabrik Reinhausen GmbH 2019 15 3550953/02 EN TAPCON® 230 pro 4 Product description This chapter contains an overview of the design and function of the product. 4.1 Scope of delivery The following components are included in the delivery: ▪Voltage regulator TAPCON® 230 ▪Folder with all device documentation ▪Quick reference guide (in the inside door of the device) ▪Door key ▪3mm Allen key ▪2 countersunk head screws ▪Control panel bracket pre-mounted on device's housing Figure 1: Control panel bracket ▪Mounting bracket for wall mounting Figure 2: Mounting bracket ▪Covering strip for door Figure 3: Covering strip Optional: ▪Cap rail clip

Maschinenfabrik Reinhausen GmbH 2019 16 3550953/02 EN TAPCON® 230 pro Figure 4: Cap rail clip Please note the following: ▪Check the shipment for completeness on the basis of the shipping docu- ments. ▪Store the parts in a dry place until installation. 4.2 Function description of the voltage regulation The TAPCON® serves to keep constant the output voltage of a transformer with an on-load tap-changer. The TAPCON® compares the transformer's measured voltage (Uactual) with a defined reference voltage (Udesired). The difference between Uactual and Udesired is the control deviation (dU). The TAPCON® parameters can be optimally adjusted to the line voltage re- sponse to achieve a balanced control response with a small number of tap- change operations. The following diagram shows an overview of voltage regulation.

Maschinenfabrik Reinhausen GmbH 2019 17 3550953/02 EN TAPCON® 230 pro TAPCON® 230 Automatic voltage regulator Regulation section Regulating transformer Summer Winter Load profile of grid Control variable for line voltage Measurement transformer Inputs digital and analog Automatic voltage regulator TAPCON® 230 for example for parallel operation of up to 16 transformers Station control system Remote communication and control room Figure 5: Overview of voltage regulation 4.3 Performance features The TAPCON® is responsible for controlling tapped transformers. Apart from control tasks, the TAPCON® provides additional functions such as: ▪Integrated monitoring functions: – Undervoltage blocking and overvoltage blocking – Overvoltage detection with high-speed return ▪Compensation for voltage drops on the line (line drop compensation) ▪Compensation for voltage fluctuations in the meshed grid (Z compensa- tion)

Maschinenfabrik Reinhausen GmbH 2019 18 3550953/02 EN TAPCON® 230 pro ▪Digital inputs and outputs can be individually programmed on-site by the customer ▪Additional indicators using LEDs outside the display for freely selectable functions ▪Display of all measured values such as voltage, current, active power, ap- parent power or reactive power, power factor (cos φ) ▪Selection of 3 different desired values ▪You can select the tap position capture when ordering: – Using analog signal 4…20 mA – Using analog signal via resistor contact series – Using digital signal via BCD code ▪Additional digital inputs and outputs which can be freely parameterized by the customer ▪Parallel operation of up to 6 transformers in 2 groups using the following methods: – Master/follower – Circulating reactive current minimization 4.4 Operating modes The device can be operated in the following operating modes: Auto mode (AUTO) In auto mode, the voltage is automatically controlled in accordance with the set parameters. You cannot change further device settings in auto mode. There is no active management by a higher level control system in this oper- ating mode. Manual mode (MANUAL) In manual mode, there is no automatic control. The motor-drive unit can be controlled via the device's operating panel. You can change the device set- tings. Local mode (LOCAL) There is no active management by a superordinate control system in this op- erating mode. Remote mode (REMOTE) In remote mode, you can perform commands using an external control level. In this case, manual operation of the , , and keys is dis- abled.

Maschinenfabrik Reinhausen GmbH 2019 19 3550953/02 EN TAPCON® 230 pro + LOCAL + REMOTE + LOCAL + REMOTE Automatic regulation Yes Yes No No Tap-change operation using operating controls No No Yes No Tap-change operation using inputs No No No Yes Table 4: Overview of operating modes 4.5 Hardware Figure 6: Hardware 1 Operating panel with display and LEDs 3 Door 2 Door lock 4 Metric cable glands

Maschinenfabrik Reinhausen GmbH 2019 20 3550953/02 EN TAPCON® 230 pro 4.5.1 Name plate The name plate is on the outside of the device: Figure 7: Name plate 4.5.2 Operating controls The device has 15 pushbuttons. The illustration below is an overview of all the device's operating controls. Figure 8: Operating controls RAISE key: Sends control command for raise tap-change to the motor- drive unit in manual mode. LOWER key: Sends control command for lower tap-change to the motor- drive unit in manual mode. REMOTE key: Activate/deactivate "Remote" operating mode. When you deactivate this operating mode, the "Local" operating mode is automati- cally activated.

Maschinenfabrik Reinhausen GmbH 2019 21 3550953/02 EN TAPCON® 230 pro MANUAL key: Activate "Manual mode" operating mode. AUTO key: Activate "Auto mode" operating mode. PREV key: Change measured value display and switch to previous param- eters. NEXT key: Change measured value display and switch to next parame- ters. ENTER key: Confirm selection and save modified parameters. ESC key: Escape current menu and select previous menu levels. MENU key: Select main menu. F1 to F5 function keys: Select functions displayed on the screen.

Maschinenfabrik Reinhausen GmbH 2019 22 3550953/02 EN TAPCON® 230 pro 4.5.3 Display elements The device has a graphics display and 15 LEDs , which indicate the various operating statuses or events. Figure 9: Indicator elements 1 Operating status LED, green 9 LED 3, function can be freely as- signed, yellow/green 2 Overcurrent blocking LED, red 10 LED 4, function can be freely as- signed, yellow/red 3 Undervoltage blocking LED, red 11 Graphics display 4 Overvoltage blocking LED, red 12 Auto operating mode active LED 5 Parallel operation active LED, green 13 Manual operating mode active LED 6 NORMset active LED , green 14 Remote operating mode active LED 7 LED 1, function can be freely as- signed, yellow 15 Lower tap-change active LED 8 LED 2, function can be freely as- signed, yellow 16 Raise tap-change active LED

Maschinenfabrik Reinhausen GmbH 2019 23 3550953/02 EN TAPCON® 230 pro Display Figure 10: Display 1 Status line 6 Bandwidth (upper and lower limit) 2 Measured voltage Uactual 7 Time bar for delay time T1 3 Desired voltage Udesired 8 Mark for measured voltage Uactual 4 Other measured values (use or to switch between them) 9 Mark for desired voltage Udesired 5 Tap position n-1; n; n+1 10 Remaining delay time T1 Other measured values In auto mode and manual mode the measured value display can be set using the or keys. The following measured values can be dis- played: Unit Measured value dU Control deviation I Current S Apparent power P Active power Q Reactive power Phase Phase angle Cos Active factor: Cosine φ [phi] (power factor) Table 5: Measured value display

Maschinenfabrik Reinhausen GmbH 2019 24 3550953/02 EN TAPCON® 230 pro Status line Current messages and events are displayed in the status line . You can find more information about messages and events in the Messages chapter. 4.5.4 Serial interface The parameters for the device can be set using a PC. The COM 1 (RS232) serial interface on the front panel is provided for this purpose. You can use the connection cable supplied to establish a connection to your PC via the RS232 or USB port (using the optional USB adapter). TAPCON®-trol software is needed for parameterization via the serial inter- face. The software and the associated user guide can be downloaded from www.reinhausen.com. Figure 11: Device connection to a PC 4.5.5 Modules The device has integrated modules: ▪MIO card ▪PIO card Carry out wiring in accordance with the supplied connection diagram. The relevant cards are described in the following sections.

Maschinenfabrik Reinhausen GmbH 2019 25 3550953/02 EN TAPCON® 230 pro 4.5.5.1 MIO card Figure 12: MIO card 1 Relay outputs (terminal X4) 4 Current transformer connection (terminal X1) 2 Signal inputs (terminal X4) 5 Voltage transformer connection and network connection (terminal X2) 3 Relay outputs (terminal X3) 6 CAN bus connection

Maschinenfabrik Reinhausen GmbH 2019 26 3550953/02 EN TAPCON® 230 pro 4.5.5.2 PIO card Figure 13: PIO card 1 Signal inputs and auxiliary voltage generation (terminal X6) 4 Relay outputs (terminal X5) 2 Analog input (terminal X7) 5 Relay outputs (terminal X5) 3 Digital tap position inputs (terminal X6)

Maschinenfabrik Reinhausen GmbH 2019 27 3550953/02 EN TAPCON® 230 pro 5 Packaging, transport and storage 5.1 Packaging 5.1.1 Purpose The packaging is designed to protect the packaged goods during transport, loading and unloading as well as periods of storage in such a way that no (detrimental) changes occur. The packaging must protect the goods against permitted transport stresses such as vibration, knocks and moisture (rain, snow, condensation). The packaging also prevents the packaged goods from moving impermissi- bly within the packaging. The packaged goods must be prepared for ship- ment before actually being packed so that the goods can be transported safely, economically and in accordance with regulations. 5.1.2 Suitability, structure and production The goods are packaged in a sturdy cardboard box. This ensures that the shipment is secure when in the intended transportation position and that none of its parts touch the loading surface of the means of transport or touch the ground after unloading. The box is designed for a maximum load of 10 kg. Inlays inside the box stabilize the goods, preventing impermissible changes of position, and protect them from vibration. 5.1.3 Markings The packaging bears a signature with instructions for safe transport and cor- rect storage. The following symbols apply to the shipment of non-hazardous goods. Adherence to these symbols is mandatory. Protect against moisture Top Fragile Attach lifting gear here Center of mass Table 6: Shipping pictograms 5.2 Transportation, receipt and handling of shipments In addition to oscillation stress, jolts must also be expected during trans- portation. In order to prevent possible damage, avoid dropping, tipping, knocking over and colliding with the product.

Maschinenfabrik Reinhausen GmbH 2019 28 3550953/02 EN TAPCON® 230 pro If a crate tips over, falls from a certain height (e.g. when slings tear) or is subject to an unbroken fall, damage must be expected regardless of the weight. Every delivered shipment must be checked for the following by the recipient before acceptance (acknowledgment of receipt): ▪Completeness based on the delivery slip ▪External damage of any type The checks must take place after unloading when the crate or transport con- tainer can be accessed from all sides. Visible damage If external transport damage is detected on receipt of the shipment, proceed as follows: ▪Immediately record the transport damage found in the shipping docu- ments and have this countersigned by the carrier. ▪In the event of severe damage, total loss or high damage costs, immedi- ately notify the sales department at Maschinenfabrik Reinhausen and the relevant insurance company. ▪After identifying damage, do not modify the condition of the shipment fur- ther and retain the packaging material until an inspection decision has been made by the transport company or the insurance company. ▪Record the details of the damage immediately onsite together with the carrier involved. This is essential for any claim for damages! ▪If possible, photograph damage to packaging and packaged goods. This also applies to signs of corrosion on the packaged goods due to moisture inside the packaging (rain, snow, condensation). ▪Be absolutely sure to also check the sealed packaging. Hidden damage When damages are not determined until unpacking after receipt of the ship- ment (hidden damage), proceed as follows: ▪Make the party responsible for the damage liable as soon as possible by telephone and in writing, and prepare a damage report. ▪Observe the time periods applicable to such actions in the respective country. Inquire about these in good time. With hidden damage, it is very hard to make the transportation company (or other responsible party) liable. Any insurance claims for such damages can only be successful if relevant provisions are expressly included in the insur- ance terms and conditions.

Maschinenfabrik Reinhausen GmbH 2019 29 3550953/02 EN TAPCON® 230 pro 5.3 Storage of shipments When selecting and setting up the storage location, ensure the following: ▪Protect stored goods against moisture (flooding, water from melting snow and ice), dirt, pests such as rats, mice, termites and so on, and against unauthorized access. ▪Store the crates on timber beams and planks as a protection against ris- ing damp and for better ventilation. ▪Ensure sufficient carrying capacity of the ground. ▪Keep entrance paths free. ▪Check stored goods at regular intervals. Also take appropriate action after storms, heavy rain or snow and so on.

30 3550953/02 EN TAPCON® 230 pro 6 Mounting This chapter describes how to correctly install and connect the device. Ob- serve the connection diagrams provided. DANGER Electric shock! Risk of fatal injury due to electrical voltage. Always observe the following safety regulations when working in or on electrical equipment. ►Disconnect the equipment. ►Lock the equipment to prevent an unintentional restart. ►Make sure all poles are de-energized. ►Ground and short-circuit. ►Cover or cordon off adjacent energized parts. WARNING Electric shock! Dangerous high voltages may occur when a current transformer is operated with an open secondary circuit. This can lead to death, injuries and property damage. ►Never operate a current transformer with an open secondary circuit; short-circuit the current transformer to prevent this. ►Observe the information in the current transformer operating instructions. NOTICE Damage to the device! Electrostatic discharge may cause damage to the device. ►Take precautionary measures to prevent the build-up of electrostatic charges on work surfaces and personnel. 6.1 Preparation The following tools are needed for mounting: ▪Provided 3mm Allen key (included in delivery) ▪Small screwdriver for connecting the signal lines and supply lines Other tools may be needed depending on installation location. 6.2 Mounting device You can mount the device in the following installation versions: ▪Flush panel mounting ▪Wall mounting

31 3550953/02 EN TAPCON® 230 pro ▪Wall mounting with mounting brackets ▪Rail mounting (optional) Preparing for mounting Before commencing mounting, the two mounting brackets back on the rear of the device must be removed and the cable gland plate taken off. To do so, proceed as follows: 1. Loosen the 4 Allen screws with attached Allen key to remove the mount- ing brackets. Figure 14: Loosen mounting bracket 2. Loosen the 4 Allen screws with attached Allen key to remove the cable gland plate. Figure 15: Loosen cable gland plate ð The mounting brackets and the cable gland plate are removed.

32 3550953/02 EN TAPCON® 230 pro The relevant installation versions are described in the following sections. 6.2.1 Flush panel mounting For flush panel mounting , the device is inserted through a cutout in the con- trol panel and fixed to the control panel or control cabinet from behind using the mounting brackets. The diagram below shows the dimensions required for the control panel cutout. Figure 16: Dimensions for the cutout A wall thickness of 2...5 mm (0.08...0.2 in) is needed for secure device fix- ing. To mount the device in the control panel or control cabinet, proceed as fol- lows: 1. Close the device's door. 2. Insert the device through the cutout in the control panel or control cabinet .

33 3550953/02 EN TAPCON® 230 pro 3. Screw both fixing brackets to the rear of the device with 2 hexagon socket screws each . Figure 17: Flush panel mounting ð The device is mounted and can be wired up . Proceed with wiring as shown in the connection diagram and as described in the Connecting device [►Section 6.3, Page 37] section. 6.2.2 Wall mounting with mounting brackets As an alternative to mounting the device directly on the wall, it can be fixed to the wall using the mounting brackets supplied. Drill 4 holes, each 5.5 mm (0.22 in) in diameter, in the wall as shown in the drilling template below. Figure 18: Bores for wall mounting with mounting brackets To mount the device using the mounting brackets, proceed as follows: 1. Lay the device carefully on the door. 2. Screw the mounting brackets supplied to the back of the device using the hexagon socket screws .

34 3550953/02 EN TAPCON® 230 pro 3. Fix the device on the wall using 4 screws (maximum diameter of 5 mm/0.22 in) . The screws for fixing to the wall are not included in the scope of supply. The screw length required depends on the wall thickness. Figure 19: Wall mounting with mounting brackets ð The device is mounted and can be wired up . Proceed with wiring as shown in the connection diagram and as described in the Connecting device [►Section 6.3, Page 37] section. 6.2.3 Cap rail mounting As an option, the device can be fitted with a cap rail clip (aluminum extrusion with wire spring integrated at center). This enables you to mount the device on a cap rail. When attaching the cap rail, sufficient space for the device must be planned for. At least 5 cm (1.97 in) of space must be provided above and at least 35 cm (13.78 in) below the fixing screws of the cap rail for the device hous- ing. To mount the device using the cap rail, proceed as follows: 1. Lay the device carefully on the door. 2. Screw the cap rail clip into the two top holes on the rear with the M5 hexagon socket countersunk head screws provided .

35 3550953/02 EN TAPCON® 230 pro 3. Suspend the cap rail clip in the cap rail and push the underside carefully towards the wall until the clip can be heard to click into place . Figure 20: Cap rail mounting ð The device is mounted and can be wired up . Proceed with wiring as shown in the connection diagram and as described in the Connecting device [►Section 6.3, Page 37] section. 6.2.4 Wall mounting For wall mounting, , the device is fixed directly to the wall. Drill 4 holes, each 5.5 mm in diameter, in the wall as shown in the drilling template below. Figure 21: Drilling template for wall mounting To mount the device directly on the wall, proceed as follows: ü Close the device's door. ►Fix the device on the wall from behind using 4 screws (M5) .

36 3550953/02 EN TAPCON® 230 pro The screws for wall mounting are not included in the scope of supply. The screw length required depends on the wall thickness. Figure 22: Wall mounting ð The device is mounted and can be wired up . Proceed with wiring as shown in the connection diagram and as described in the Connecting device section. 6.2.5 Removing the door When the door is fitted, the device satisfies protection category IP54. The door may be removed if the device is used solely in a dry atmosphere pro- tected from environmental influences. The device then satisfies protection category IP21. Proceed as follows to remove the door: 1. Loosen the grounding strap on the door using an open-end wrench. Figure 23: Remove door

37 3550953/02 EN TAPCON® 230 pro 2. Unscrew the fixing bolt using a slotted screwdriver and lift the door out of the upper mounting . Figure 24: Lift door from the suspension mount 3. Hook the cover strip in the upper and lower suspension mount and fasten it with the provided raised countersunk head screws. Figure 25: Fasten covering strip ð The door is removed and the exposed attachment points for the door are covered. 6.3 Connecting device The following section describes how to establish the electrical connection to the device. WARNING Electric shock! Connection errors can lead to death, injury or property damage. ►Ground the device with a protective conductor using the grounding screw on the housing. ►Note the phase difference of the secondary terminals for the current transformer and voltage transformer. ►Connect the output relays correctly to the motor-drive unit.

38 3550953/02 EN TAPCON® 230 pro Supply the voltage via separators and ensure that current paths can be short circuited. Fit the separator, clearly labeled, close to the device's power supply so that it is freely accessible. This ensures that the device can be re- placed with ease in the event of a defect. Wiring information Note this procedure for the wiring: ü To obtain a better overview when connecting cables, only use as many leads as necessary. ü Note the connection diagram. ü Use only the specified cables for wiring. Note the cable recommendation [►Section 6.3.1, Page 38]. ü Wire the leads to the system periphery [►Section 6.3.4, Page 44]. 1. Strip insulation from leads and wires. 2. Crimp stranded wires with wire end sleeves. 6.3.1 Cable recommendation Please note the following recommendation from Maschinenfabrik Rein- hausen when wiring the device. Excessive line capacitance can prevent the relay contacts from breaking the contact current. In control circuits operated with alternating current, take into account the effect of the line capacitance of long control cables on the func- tion of the relay contacts. Cable Terminal Cable type Wire cross- section Max. length Max. permissible torque Analog input X7 Shielded (< 25 Ω/km) 1.5 mm² 400 m - Signal inputs X4 Shielded 1.5 mm² - 0.6 Nm RS232 SUB-D - Shielded 0.25 mm² 25 m - RS485 - Shielded (< 50 Ω/km) 0.75 mm² 1000 m - Ethernet RJ45 - min. CAT5 - - - Relay outputs* X3 Unshielded 1.5 mm² - 0.6 Nm Relay outputs* op- tional X4 Unshielded 1.5 mm² - 0.6 Nm Current measure- ment X1:5/6/9 Unshielded 4 mm² - 1.5 Nm Voltage measure- ment X2:1/2 Shielded 1.5 mm² - 0.6 Nm Relay outputs X5 Unshielded 1.5 mm² - 0.6 Nm Signal inputs X6 Unshielded 1.5 mm² - 0.6 Nm

39 3550953/02 EN TAPCON® 230 pro Cable Terminal Cable type Wire cross- section Max. length Max. permissible torque Digital tap position inputs X6 Shielded 1.5 mm² - 0.6 Nm Auxiliary voltage X6 Unshielded 1.5 mm² - 0.6 Nm Power supply X2:3/4 Unshielded 1.5 mm² - 0.6 Nm CAN bus - Shielded 1.0 mm² 2000 m - Table 7: Cable recommendation for connection cable *) Observe line capacitance, see note above. Cable clips X1 to X4 are on the MIO card of the device. Cable clips X5 to X7 are on the PIO card of the device. 6.3.2 Information about laying fiber-optic cable To ensure the smooth transfer of data via the fiber-optic cable, you must en- sure that mechanical loads are avoided when laying the fiber-optic cable and later on during operation. Also observe the information from the manufac- turer of the fiber-optic cable and the following instructions: ▪Radii must not fall below the minimum permissible bend radii (do not bend fiber-optic cable). ▪The fiber-optic cables must not be over-stretched or crushed. Observe the permissible load values. ▪The fiber-optic cables must not be twisted. ▪Be aware of sharp edges because they can damage the fiber-optic cable's coating during laying or can place mechanical loads on the coating later on. ▪Provide a sufficient cable reserve near distributor cabinets. Lay the re- serve such that the fiber-optic cable is neither bent nor twisted when tight- ened. 6.3.3 Electromagnetic compatibility The device has been developed in accordance with applicable EMC stan- dards. The following points must be noted in order to maintain the EMC standards. 6.3.3.1 Wiring requirement of installation site Note the following when selecting the installation site: ▪The system's overvoltage protection must be effective. ▪The system's ground connection must comply with all technical regula- tions.

40 3550953/02 EN TAPCON® 230 pro ▪Separate system parts must be joined by a potential equalization. ▪The device and its wiring must be at least 10 m away from circuit-break- ers, load disconnectors and busbars. 6.3.3.2 Wiring requirement of operating site Note the following when wiring the operating site: ▪Route the connecting leads in grounded metal cable ducts. ▪Do not route lines which cause interference (e.g. power lines) and lines susceptible to interference (e.g. signal lines) in the same cable duct. ▪Maintain a distance of more than 100 mm between lines which cause in- terference and those which are susceptible to interference. Figure 26: Recommended wiring 1 Cable duct for lines causing inter- ference 3 Cable duct for lines susceptible to interference 2 Line causing interference (e.g. power line) 4 Line susceptible to interference (e.g. signal line) ▪Short-circuit and ground reserve lines. ▪Never connect the device with a multi-wire collective pipe. ▪For signal transmission, use shielded lines with individual conductors (out- going conductor / return conductor) twisted in pairs. ▪Connect full surface of shielding (360º) to device or to a nearby grounding bar. Using single conductors may limit the effectiveness of the shielding. Con- nect close-fitting shielding to cover all areas.

41 3550953/02 EN TAPCON® 230 pro Figure 27: Recommended connection of the shielding 1 Connection of the shielding via a single conductor 2 Full-surface connection of the shielding 6.3.3.3 Wiring requirement in control cabinet Note the following when wiring the control cabinet: ▪The control cabinet where the device will be installed must be prepared in accordance with EMC requirements: – Functional division of control cabinet (physical separation) – Constant potential equalization (all metal parts are joined) – Line routing in accordance with EMC requirements (separation of lines which cause interference and those susceptible to interference) – Optimum shielding (metal housing) – Overvoltage protection (lightning protection) – Collective grounding (main grounding rail) – Cable bushings in accordance with EMC requirements – Any contactor coils present must be interconnected ▪The device's connection cables must be laid in close contact with the grounded metal housing or in metallic cable ducts with a ground connec- tion. ▪Signal lines and power lines/switching lines must be laid in separate cable ducts. ▪The device must be grounded at the screw provided, the protective grounding connection, using a ground strap (cross-section min. 8 mm²).

42 3550953/02 EN TAPCON® 230 pro Figure 28: Ground strap connection Ground connection for wiring inside the device The diagram below shows the ground connection for wiring inside the de- vice. Figure 29: Grounding inside the device 6.3.3.4 Information about shielding the CAN bus In order for the CAN bus to operate faultlessly, you have to connect the shielding using one of the following variants. If you are not able to use any of the variants detailed below, we recommend using fiber-optic cables. Fiber- optic cables decouple the devices and are not sensitive to electromagnetic interference (surge and burst).

43 3550953/02 EN TAPCON® 230 pro NOTICE Damage to the device! If you connect the CAN bus cable to devices with different potentials, cur- rent may flow across the shielding. This current may damage the device. ►Connect the devices to a potential equalization rail to equalize the poten- tial. ►If both devices have different potentials, only connect the CAN bus cable shielding to one device. Variant 1: The connected devices share the same potential If the devices to be connected share the same potential, proceed as follows: 1. Connect all devices to a potential equalization rail to equalize the poten- tial. 2. Connect the CAN bus cable shielding to all connected devices. Variant 2: The connected devices have different potentials Note that the shielding is less effective with this variant. If the devices to be connected have different potentials, proceed as follows: ►Connect the CAN bus cable shielding to just one device. Figure 30: Securing the shielding 1 Securing the CAN bus cable's shielding

44 3550953/02 EN TAPCON® 230 pro 6.3.4 Connecting cables to the system periphery To obtain a better overview when connecting cables, only use as many leads as necessary. To connect cables to the system periphery, proceed as follows: ü Use only the specified cables for wiring. Note the cable recommendation. ►Connect the lines to be wired to the device to the system periphery as shown in the connection diagrams supplied. 6.3.5 Supplying the voltage regulator using auxiliary voltage The device is normally supplied by the voltage transformer. If the voltage transformer does not provide the supply voltage and power (see "Technical Data") needed for operation, the device must be supplied via a 88...265V AC/DC, 50...60Hz auxiliary supply . Proceed as follows to supply the device with auxiliary voltage: 1. NOTICE! Voltage transformer damage Connecting an auxiliary voltage when bridges are present between the X2:1/3 and X2:2/4 terminals can result in voltage transformer damage. Remove the bridges between the terminals X2:1/3 and X2:2/4. 2. Connect the voltage transformer to terminals X2:1 and X2:2. 3. Connect the auxiliary voltage using the following terminals: X2:3 and X2:4. Figure 31: Voltage transformer and auxiliary supply connections 6.3.6 Wiring device To obtain a better overview when connecting cables, only use as many leads as necessary.

45 3550953/02 EN TAPCON® 230 pro To wire the device, proceed as follows: ü Use only the specified cables for wiring. Note the cable recommendation [►Section 6.3.1, Page 38]. ü Wire the lines to the system periphery [►Section 6.3.4, Page 44]. 1. Remove 4 hexagon socket screws from cover plate and take off cover plate. 2. Disconnect the connectors required. 3. Remove 4 hexagon socket screws from the cable gland plate and take off the cable gland plate. 4. Remove dummy plug from required cable glands in order to guide cables through. Unnecessary cable glands must be sealed with dummy plugs to guarantee the IP54 protection category. 5. Strip insulation from lines and leads. 6. Crimp stranded wires with core cable ends. 7. Guide cables through the cable gland 8. Guide leads into corresponding connector terminals. 9. Fasten screws for the corresponding terminals using a screwdriver. 10. Guide the cable gland plate into the device opening provided for this pur- pose. 11. Plug connectors into the correct slots. 12. Secure cable gland plate to device housing with 4 hexagon socket screws. 6.3.7 Checking functional reliability To ensure that the device is wired correctly, check its functional reliability. NOTICE Damage to device and system periphery An incorrectly connected device can lead to damages in the device and sys- tem periphery. ►Check the entire configuration before commissioning. ►Prior to commissioning, be sure to check the actual voltage and operating voltage. Check the following: ▪Once you have connected the device to the grid, the screen displays the MR logo and then the operating screen. ▪The green Operating display LED top left on the device's front panel lights up.

46 3550953/02 EN TAPCON® 230 pro The device is fully mounted and can be configured. The actions required for this are described in the following chapter.

47 3550953/02 EN TAPCON® 230 pro 7 Commissioning You need to set several parameters and perform function tests before com- missioning the device. These are described in the following sections. NOTICE Damage to device and system periphery An incorrectly connected device can lead to damages in the device and sys- tem periphery. ►Check the entire configuration before commissioning. ►Prior to commissioning, be sure to check the actual voltage and operating voltage. We recommend using a device for industrial instrumentation to record the actual transformer voltage value in order to evaluate how the device is func- tioning. 7.1 Setting the display contrast You can adjust the contrast in the display with the help of an adjustment screw on the front of the device. To adjust the contrast, proceed as follows: ►Use a screwdriver to turn the adjustment screw on the front until the con- trast is adjusted to the desired setting. Figure 32: Setting the display contrast 7.2 Setting parameters To commission the device, you must set the following parameters. For more detailed information about the parameters, refer to the respective sections.

48 3550953/02 EN TAPCON® 230 pro 7.2.1 Setting the language You can use this parameter to set the display language for the device. The following languages are available: English Italian German Portuguese French Russian Spanish To set the language, proceed as follows: 1. > Configuration > General. ð Language 2. Press or to select the required language. 3. Press . ð The language is set. 7.2.2 Setting further parameters Set further parameters to commission the device. You will find more detailed information about the respective parameters in the "Operation" [►Section 8, Page 60] chapter. Setting transformer data Set the transformer data and phase difference of the current transformer and voltage transformer: 1. Set primary transformer voltage [►Section 8.7.1, Page 95]. 2. Set secondary transformer voltage [►Section 8.7.2, Page 95]. 3. Set primary transformer current [►Section 8.7.3, Page 96]. 4. Select current-transformer connection [►Section 8.7.4, Page 96]. 5. Select transformer circuit [►Section 8.7.5, Page 97]. Setting NORMset If you want to commission voltage regulation quickly, you can activate NORMset mode. If you want to set the parameters yourself, continue with the sections below. ►Activate NORMset and set the relevant parameters [►Section 8.3, Page 70]. Setting control parameters Set the following control parameters: 1. Set desired value 1 [►Section 8.4.1, Page 74].

49 3550953/02 EN TAPCON® 230 pro 2. Set the bandwidth [►Section 8.4.3.2, Page 77]. 3. Set delay time T1 [►Section 8.4.4, Page 77]. Setting line drop compensation (optional) If you need line drop compensation, you must set all important parameters for this: 1. Select the LDC compensation method [►Section 8.6.1, Page 89]. 2. Set the line data for the ohmic voltage drop Ur [►Section 8.6.1.1, Page 91]. 3. Set the line data for the inductive voltage drop Ux [►Section 8.6.1.2, Page 91]. Setting parallel operation (optional) If you need parallel operation, you must set all important parameters for this: 1. Set parallel operation method to circulating reactive current method [►Section 8.8.2.1, Page 102]. 2. Assign CAN bus address [►Section 8.8.1, Page 102]. 3. Set circulating reactive current sensitivity [►Section , Page 103]. 4. Set circulating reactive current blocking [►Section , Page 103]. Setting tap position capture via analog input (optional) If you want to capture the tap position via the analog input, you must set the parameters required for this: ►Capture tap positions via analog input (PIO card terminal strip X7) [►Sec- tion 8.9.2, Page 110]. All parameters relevant to commissioning are entered. Continue with the function tests. Setting the desired voltage level remotely If you would like to set the desired voltage level remotely, you must config- ure the necessary parameters: ►Activate "Set the desired voltage level remotely" and set the relevant pa- rameters [►Section 8.10, Page 113]. 7.3 Calibrating the analog input Before you can use the analog input, you need to calibrate it. Calibration is used to adjust the external measuring circuit.

50 3550953/02 EN TAPCON® 230 pro The key can be used to cancel the calibration at any point. To carry out the calibration, proceed as follows: 1. > Info > Press until the desired measurement parameter is displayed. ð PIO X7 analog input 2. Press to start the calibration. ð A screen containing instructions is displayed. 3. Connect resistor contact series (potentiometer series). 4. Turn resistor contact series into end position "Rmax". 5. Press to carry out the calibration. The procedure may take up to 3 minutes. If this time is exceeded, the "Check sliding contact" error message is displayed. In this case, make sure that the resistor contact series is correctly connected and is not faulty. To configure further parameters for setting the tap position capture remotely, proceed as follows: 1. Select analog tap position capture [►Section 8.10, Page 113]. 2. Set lower limit value [►Section 8.10.2, Page 114] 3. Set upper limit value [►Section 8.10.3, Page 115] ð The analog tap position capture is set. 7.4 Function tests Before switching from manual mode to auto mode, Maschinenfabrik Rein- hausen recommends carrying out function tests. These function tests are de- scribed in the following sections. Note the following points for all function tests: ▪You must ensure that REMOTE mode is disabled before you can control the on-load tap-changer manually in manual mode. ▪You can only activate the on-load tap-changer manually in manual mode using the and keys. ▪During the function test, you must set the most important parameters. De- tails on the parameters listed can be found in the Operation [►Section 8, Page 60] chapter.

51 3550953/02 EN TAPCON® 230 pro 7.4.1 Checking control functions This section describes how you can check the device's control functions: ü Supply voltage must be present. 1. Press to select manual mode. 2. Set transmission ratio for voltage transformer, current transformer and measuring set-up. 3. Measure actual voltage and compare with the measured value displayed on the device's main screen. 4. Press key several times to display the operating values for current, power and phase angle and compare them with values of service instru- ments. 5. Control the on-load tap-changer manually with the or keys until the measured voltage (Uactual) reaches the desired voltage (Udesired) set in the next stage. 6. Set desired value 1 to the value you want. 7. Set bandwidth depending on step voltage [►Section 8.4.3, Page 76]. 8. Set delay time T1 to 20 seconds [►Section 8.4.4, Page 77]. 9. Set control response T1 to linear [►Section 8.4.5, Page 78]. 10. Press to raise the on-load tap-changer 1 step. 11. Press to select auto mode. ð After 20 seconds, the device returns the on-load tap-changer to the original operating position. 12. Press to select manual mode. 13. Press to lower the on-load tap-changer 1 step. 14. Press to select auto mode. ð After 20 seconds, the device returns the on-load tap-changer to the original operating position. 15. Press to select manual mode. 16. Set delay time T2 to 10 seconds [►Section , Page 79]. 17. Activate delay time T2. 18. Press twice to raise the on-load tap-changer 2 steps. 19. Press to select auto mode. ð After 20 seconds, the device lowers the on-load tap-changer one step and after another 10 seconds another step. 20. Press to select manual mode. 21. Set delay time T1 [►Section 8.4.4, Page 77] and delay time T2 [►Sec- tion , Page 79] to the desired value.

52 3550953/02 EN TAPCON® 230 pro We recommend a temporary setting of 100 seconds for delay time T1 when commissioning the transformer. Depending on the operating conditions, you can also specify the delay time following a longer observation period. In this regard, it is useful to register how the actual voltage progresses and the number of tap-change operations per day. 7.4.2 Checking additional functions This section describes how you can check the following additional functions: ▪Undervoltage blocking ▪Overvoltage blocking ▪Activation of desired values 2 and 3 ▪Line drop compensation ▪Z compensation Proceed as follows: Checking undervoltage blocking U< 1. Press to select manual mode. 2. Set undervoltage U < [%] to 85 %. 3. Set the U< blocking parameter to On [►Section , Page 82]. 4. Set desired value 1 such that the measured voltage Uactual is below the undervoltage U< [%] limit value. Measured voltage = 100 V Desired value 1 = Set to 120 V (greater than 100 V/0.85 = 117 V). ð The Undervoltage U< LED will light up. ð After around 10 seconds the Undervoltage message appears in the dis- play and the relevant signaling relay is activated. Contact X4:1/3 closes and contact X4:2/3 opens. 5. Press to select auto mode. ð The device blocks and does not issue any control commands. 6. Press to select manual mode. 7. Reset the operating values for desired value 1 and undervoltage U< [%] to the desired operating values. ð The function test for undervoltage blocking is complete. Checking overvoltage blocking U> 1. Press to select manual mode. 2. Set overvoltage U> [%] to 115 %. 3. Set the absolute limit values parameter to Off.

53 3550953/02 EN TAPCON® 230 pro 4. Set desired value 1 such that the measured voltage Uactual is above the overvoltage U> [%] limit value. Measured voltage = 100 V Desired value 1 = Set to 85 V (less than 100 V/1.15 = 87 V). ð The Overvoltage U> LED will light up. ð The Overvoltage message appears in the display and the relevant sig- naling relay is activated. Contact X4:1/3 closes and contact X4:2/3 opens. 5. Press to select auto mode. ð The LOWER output relay emits a control command every 1.5 seconds. 6. Press to select manual mode. 7. Reset the operating values for desired value 1 and overvoltage U> [%] to the desired operating values. ð The function test for overvoltage blocking is complete. Checking desired value 2 and desired value 3 1. Press to select manual mode. 2. Set desired value 2 to the value you want. 3. Apply voltage L+ to terminal X4:17 desired value 2 (see connection dia- gram). 4. Press until the main screen is displayed. ð Desired value 2 is shown on the main screen. 5. Set desired value 3 to the value you want. 6. Apply voltage L+ to terminal desired value 3 (see connection diagram). 7. Press until the main screen is displayed. ð Desired value 3 is shown on the main screen. ð The function test for desired value 2 and desired value 3 is complete. Checking line drop compensation If you want to use line drop compensation, you need to run this function test. A load current of ≥ 10 % of the nominal transformer current is needed for the following function tests. Before the function test, ensure that all parameters for line drop compensation and for Z compensation are set to 0. 1. Press to select manual mode. 2. Set the compensation method parameter to LDC. 3. Press until the main screen is displayed.

54 3550953/02 EN TAPCON® 230 pro 4. If necessary, press until the control deviation dU is shown. ð The measured voltage must be within the bandwidth. 5. Set line drop compensation Ur parameter to 20.0 V. 6. Press until the main screen is displayed. 7. If necessary, press until the control deviation dU is shown. ð The value for control deviation dU must be negative. 8. Set line drop compensation Ur parameter to -20.0 V. 9. Press until the main screen is displayed. 10. If necessary, press until the control deviation dU is shown. ð The value for control deviation dU must be positive. If the control deviation appears in the opposite direction, change the polarity of the current transformer. 11. Set the line drop compensation Ur and line drop compensation Ux parameters to the desired operating values. ð The function test for line drop compensation is complete. Checking Z compensation If you want to use Z compensation, you need to run this function test. A load current of ≥ 10 % of the nominal transformer current is needed for the follow- ing function test . 1. Press to select manual mode. 2. Set all parameters for line drop compensation and Z compensation to 0. 3. Set the compensation method parameter to Z. 4. Press until the main screen is displayed. 5. If necessary, press until the control deviation dU is shown. ð The measured voltage must be within the bandwidth. 6. Set the Z compensation parameter to 15.0 V. 7. Press until the main screen is displayed. 8. If necessary, press until the control deviation dU is shown. ð The control deviation dU must be negative. If the control deviation appears in the opposite direction, change the polarity of the current transformer.

55 3550953/02 EN TAPCON® 230 pro 9. Set the Z compensation and Z compensation limit value parameters to the desired operating values. ð The function test for Z compensation is complete. 7.4.3 Checking parallel operation This section describes how you can run the function test for parallel opera- tion. Requirements To obtain perfect functioning in parallel operation, the voltage regulator must be commissioned in simplex mode. Make sure that the conditions below have been fulfilled. ▪All devices are set to the same operating parameters for desired value, circulating reactive current sensitivity and delay time T1. ▪The circulating reactive current sensitivity on all devices must be set to 0 %. ▪The circulating reactive current blocking parameter must be set to 20 %. ▪You must undertake all settings in manual mode. ▪Each device needs an individual address on the CAN bus. 7.4.3.1 Checking circulating reactive current sensitivity This section describes how to run the function test for circulating reactive current sensitivity. 1. Adjust both transformers in simplex mode to the same actual voltage by means of the on-load tap-changer. ð When both devices are in a state of equilibrium, then the value of the control deviation dV [%] is smaller than the set bandwidth. You can see this in the main screen if the mark for the measured voltage Uactual is within the bandwidth. 2. Connect the transformers in parallel and enable the parallel control. ð The two devices must still be in a state of equilibrium. ð The Parallel operation LED on the front panel is illuminated. 3. On one of the two transformers, raise the tap position of the on-load tap- changer by one setting; on the second transformer, lower the tap position of the on-load tap-changer by one setting. ð The two devices must still be in a state of equilibrium. 4. Adjust the circulating reactive current sensitivity until the result dis- played exceeds the set value for the bandwidth by approx. 0.2 % to 0.3 %. ð The value for the result changes in the help text in the last line of the display. 5. Set the value given in the previous step for all devices in parallel opera- tion.

56 3550953/02 EN TAPCON® 230 pro 6. Press to select auto mode for both devices. ð The devices return the on-load tap-changer units to the original tap po- sitions. ð The function test for circulating reactive current sensitivity is complete. If the earlier tap positions are not reached, increase the value of the circulat- ing reactive current sensitivity [►Section , Page 103] parameter. If one of the two on-load tap-changer units switches one or more tap posi- tions higher and the other switches the same amount lower, you need to re- duce the value of the circulating reactive current sensitivity [►Section , Page 103] parameter. After you have set the circulating reactive current sensitivity parameter, continue with the circulating reactive current blocking function test described in the next section. 7.4.3.2 Checking circulating reactive current blocking This section describes how to run the function test for circulating reactive current blocking. 1. Press on one device to select manual mode. 2. Using manual control, adjust the relevant motor-drive unit upwards by the maximum permitted tap difference in operating positions between the par- allel operating transformers (for example by 1 - 2 steps). When setting the circulating reactive current blocking in the following process step, wait approx. 2 - 3 seconds between the individual steps. 3. Set the parallel operation method parameter to circulating reactive current. 4. The circulating reactive current blocking parameter should be reduced [►Section , Page 103] from the set value of 20 % in steps of 1 % until the Parallel operation error: circulating reactive current limit exceeded is dis- played. ð The Parallel operation LED lights up when the circulating reactive cur- rent blocking limit is reached. ð Any further regulation is blocked. 5. After the set delay time for the parallel operation error message (time can be adjusted [►Section , Page 107]), the signaling relay X5:12 (default set- ting) is activated. 6. Increase the circulating reactive current blocking parameter again until the message Parallel operation error: circulating reactive current limit ex- ceeded disappears.

57 3550953/02 EN TAPCON® 230 pro 7. Press to select auto mode. ð The motor-drive unit automatically returns to the original operating posi- tion. 8. Set the value determined for the circulating reactive current blocking on the devices in parallel operation as well. If one or all devices indicate Parallel operation error: circulating reactive cur- rent limit exceeded although the control inputs are correctly connected for all the devices, then all the devices block. This could be due to various causes. Further information is given in the chapter Troubleshooting [►Section 9, Page 130]. ð The function test for circulating reactive current blocking is complete. 7.4.3.3 Checking tap synchronization method This section describes how to run the function test for tap synchronization (master/follower). If instances arise where a follower switches in the opposite direction to the master step change, then the setting for the tapping direction parameter on the follower must be changed from Default to Swapped. NOTICE Damage resulting from formation of circulating reactive current If the parameters are not set correctly, damage may result from the forma- tion of circulating reactive current and the resulting overload of transmission lines and transformers. ►Check transformer type plate. ►Set device parameters in accordance with transformer configuration. Before starting the function test, you must carry out the following steps: 1. Assign the master function to one device. 2. Assign the follower function to the other devices. 3. Compare the tap position displays of devices / . All devices must display the same tap position; if not, switch them into the same one.

58 3550953/02 EN TAPCON® 230 pro Figure 33: Comparing tap positions 1 Master 3 Tap position display 2 Follower To perform the function test, proceed as follows: 1. Press on the follower to select manual mode. 2. If necessary, set the follower tapping direction. 3. Press on the master to select manual mode. 4. Press or on the master to manually change the tap position. 5. Press on the follower to select auto mode. ð The follower follows the master's control command. 6. Press on the master to select auto mode. 7. Press on the follower to select manual mode. 8. Press or on the follower to manually change the tap position. ð After expiry of the set delay time for parallel operation errors [►Sec- tion , Page 107], the Tap difference to follower error message is dis- played in the main screen on the master.

59 3550953/02 EN TAPCON® 230 pro 9. Press several times on the follower to manually increase the tap posi- tion by the number of permitted steps (maximum permitted tap difference) and then one more step. ð After expiry of the set delay time for parallel operation errors, the follow- ing error messages are displayed on the master: Parallel operation er- ror: tap difference to follower ð After expiry of the set delay time for parallel operation errors, the follow- ing error messages are displayed on the follower: Parallel operation er- ror: permitted tap difference to master exceeded. 10. Press on the follower to select auto mode. ð There is no response. All devices remain blocked. 11. Press on the master and follower to select manual mode. 12. Press or on the master and follower to manually set the desired step. Because in parallel operation the tap positions of the transformers which are running in parallel are compared following the Automatic tap synchroniza- tion method, it is absolutely essential that these transformers have the same position designation and that the Raise and Lower signals produce the same voltage change in all transformers. ð The function tests for the tap synchronization method are complete. Installation and commissioning of the device is complete.

60 3550953/02 EN TAPCON® 230 pro 8 Operation This chapter describes all the functions and setting options for the device. 8.1 Key lock The device is equipped with a key lock to prevent unintentional operation. You can only set or change the parameters when the key lock is deactivated in manual mode. Activating key lock To activate the key lock, proceed as follows: ►Press and at the same time. ð A confirmation appears in the display for a brief period. The key lock is ac- tivated. Parameters can no longer be entered. Deactivating key lock To deactivate the key lock, proceed as follows: ►Press and at the same time. ð The key lock is deactivated. Parameters can be entered. 8.2 General You can undertake general settings on the device in the General menu item. ▪Language [►Section 7.2.1, Page 48] ▪Regulator ID ▪Baud rate (COM1 setting) ▪Raise/Lower pulse duration ▪Operations counter ▪Display dimming ▪Key lock ▪Function monitoring ▪Motor runtime ▪Manual mode/auto mode ▪Local/Remote 8.2.1 Setting device ID You can use the device ID parameter to assign a 4-digit ID to the device. This ID is used to uniquely identify the device in the TAPCON®-trol software.

61 3550953/02 EN TAPCON® 230 pro To set the device ID, proceed as follows: 1. > Configuration > General > Press until the desired pa- rameter is displayed. ð Regulator ID. 2. Press to change the first digit. ð If you wish to enter a multi-digit sequence, proceed to step 3. If you do not wish to enter additional digits, proceed to step 7. 3. Press (digit > 9) until another digit position appears. 4. If necessary, press in order to highlight the digit position. ð The required digit is highlighted and can be changed. 5. Press or to change the digit. 6. Repeat steps 3 to 5 until all required digits have been entered. 7. Press . ð The device ID is set. 8.2.2 Setting the baud rate You can use this parameter to set the COM1 interface's baud rate. You can select the following options: ▪9.6 kilobaud ▪19.2 kilobaud ▪38.4 kilobaud ▪57.6 kilobaud To set the baud rate, proceed as follows: 1. > Configuration > General > Press until the desired pa- rameter is displayed. ð Baud rate. 2. Press or to select the required baud rate. 3. Press . ð The baud rate is set. 8.2.3 Setting the switching pulse time You can use this parameter to set the duration of the switching pulse for the motor-drive unit. If you set the switching pulse time to 0 s, the motor-drive unit is activated with a continuous signal. The signal then remains active for as long as the or keys are pressed.

62 3550953/02 EN TAPCON® 230 pro Switching pulse in normal mode If you set the switching pulse time to 1.5 seconds for example, after the set delay time T1 or delay time T2 there will be a switching pulse of 1.5 sec- onds . The waiting time between 2 consecutive switching pulses corresponds to the set delay time T1 or delay time T2 . Figure 35: Switching pulse time in normal mode 1 Set delay time T1 or T2 2 Set switching pulse time (for exam- ple 1.5 seconds) If the motor-drive unit does not start with the factory setting (1.5 seconds), you need to extend the raise switching pulse time / lower switching pulse time.

63 3550953/02 EN TAPCON® 230 pro Switching pulse for rapid return control If you set the raise switching pulse time or lower switching pulse time to 1.5 seconds, for example , the next earliest switching pulse occurs in rapid return control mode 1.5 seconds after the previous switching pulse ended. Figure 36: Switching pulse in rapid return control mode 1 Start of first raise switching pulse/ lower switching pulse 3 Earliest time for the next raise switching pulse/lower switching pulse (for example 1.5 seconds) 2 Set switching pulse time (for exam- ple 1.5 seconds) To set the pulse duration, proceed as follows: 1. > Configuration > General > Press until the desired pa- rameter is displayed. ð R/L pulse duration. 2. Press or to select the pulse duration you want. 3. Press . ð The R/L pulse duration is now set. 8.2.4 Setting operations counter The device's operations counter is automatically increased with every tap- change operation. You can use this parameter to set the number of tap- change operations for comparing with the operations counter of the motor- drive unit, for example. To ensure correct operation counter function, the Motor running signal of the motor-drive unit must be connected with a configurable input (GPI 1...6) and then the Motor running function assigned to this input.

64 3550953/02 EN TAPCON® 230 pro To set the operations counter, proceed as follows: 1. > Configuration > General > Press until the desired pa- rameter is displayed. ð Operations counter. 2. Press to highlight a digit. ð The desired position is highlighted and the value can be changed. 3. Press to increase the value or to reduce it. 4. Press . ð The operations counter is set. 8.2.5 Dimming display You can use this parameter to activate or deactivate automatic display dim- ming. You can select the following options: ▪On: The display is automatically dimmed if no key is pressed for 15 min- utes. The display returns to full brightness by pressing any key. ▪Off: Automatic display dimming is deactivated. Activating this function extends the display's service life. To activate/deactivate automatic display dimming, proceed as follows: 1. Press > Configuration > General > until the desired pa- rameter is displayed. ð Display off. 2. Press or to activate/deactivate automatic dimming. 3. Press . ð Automatic dimming is set. 8.2.6 Activating/deactivating the automatic key lock Activating this function automatically activates the key lock if no keys are pressed for 15 minutes. You can also lock the keys manually. This function can be deactivated as well.

65 3550953/02 EN TAPCON® 230 pro To set the automatic key lock, proceed as follows: 1. > Configuration > General > Press until the desired pa- rameter is displayed. ð Key lock 2. Press or to select On or Off. 3. Press . ð Automatic key lock is set. 8.2.7 "Function monitoring" message for monitoring messages <30 V By default, the Function monitoring message is activated for measured volt- ages. This message is issued as soon as the measured voltage is under 30 V for longer than the set signaling delay time. Switched-off transformer You can suppress the message with this parameter to prevent the message from being continuously issued when a transformer is shut off. The device behaves as follows: Parameter Function On The Function monitoring message is issued after the con- figured delay time if the measured voltage is less than 30 V. Off The Function monitoring message is suppressed if the measured voltage is less than 30 V. Table 8: Settings Activate/deactivate message To activate/deactivate function monitoring, proceed as follows: 1. > Configuration > General > Press until the desired pa- rameter is displayed. ð Function monitoring 2. Press or to select On or Off. 3. Press . ð The Function monitoring message for is activated/deactivated for mea- sured voltages <30 V. Setting delay time You can configure the delay time after which the Function monitoring mes- sage is to be issued. If you select 0, function monitoring is deactivated.

66 3550953/02 EN TAPCON® 230 pro To set the delay time for the Function monitoring message, proceed as fol- lows: 1. > Configuration > General > Press until the desired pa- rameter is displayed. ð Delay function monitoring 2. Press to increase the value or to reduce it. 3. Press . ð The delay time for the Function monitoring message is set. 8.2.8 Setting motor runtime monitoring You can use this motor runtime parameter to set the motor runtime. The mo- tor-drive unit's runtime can also be monitored by the device. This function is used to identify motor-drive unit malfunctions during the tap-change opera- tion and to trigger any actions needed. Behavior The motor-drive unit issues the Motor-drive unit running signal during the tap-change operation. This signal is present until the tap-change operation is complete. The device compares the duration of this signal with the set motor runtime. If the set motor runtime is exceeded, the device triggers the follow- ing actions: 1. Motor runtime monitoring message is issued 2. Continuous signal via output relay Motor-drive unit runtime exceeded (op- tional) 3. Pulse signal via Trigger motor protective switch output relay (optional) Parameterizing control input To use runtime monitoring, you need to correctly wire the corresponding control input and parameterize to Motor running. The motor runtime must also be set.

67 3550953/02 EN TAPCON® 230 pro Wiring control input/output relay If you want to monitor the motor runtime, the device and motor-drive unit must be connected and parameterized as shown below. Figure 38: Wiring for motor runtime monitoring 1 Motor running control input I/O 3 Motor protective switch tripped GPO output relay (optional) 2 Motor protective switch triggered control input I/O (optional) 4 Motor runtime exceeded GPO out- put relay (optional) If you want to use the output relay, the feedback from the motor-drive unit Motor protective switch triggered must be wired to a control input and pa- rameterized. This message resets the Motor runtime exceeded output relay when the motor protective switch is switched back on and activates the Mo- tor protective switch triggered message. If the runtime monitoring is set to "0.0 s", this equates to it being switched off.

68 3550953/02 EN TAPCON® 230 pro To set the motor runtime, proceed as follows: 1. > Configuration > General > Press until the desired pa- rameter is displayed. ð Motor runtime. 2. Press to highlight the position. ð The desired position is highlighted and the value can be changed. 3. Press to increase the value or to reduce it. 4. Press . ð The motor runtime is set. 8.2.9 Activate manual mode/auto mode This parameter can be used to activate the Manual or Automatic operation modes. This parameter has the same functions as the and keys. Parameter Function Manual Device is no longer controlling automatically. You can set or change parameters manually. You can control the motor-drive unit using the con- trol panel. Auto The device is controlling the voltage automatically. You cannot set or change any parameters. You cannot control the motor-drive unit using the control panel. Table 9: Adjustable parameters To select the operating mode, proceed as follows: 1. > Configuration > General > Press until the desired pa- rameter is displayed. ð Manual/Automatic 2. Press or to select the operating mode you want. 3. Press . ð The operating mode is set.

69 3550953/02 EN TAPCON® 230 pro 8.2.10 Activating Local/Remote This parameter can be used to activate the Local or Remote operation modes. This parameter has the same functions as the keys. Parameter Function Local You can operate the device using the control panel. Remote You can operate the device using an external con- trol level. Manual operation is disabled. Table 10: Adjustable parameters To activate Manual or Automatic operating mode, proceed as follows: 1. > Configuration > General > Press until the desired pa- rameter is displayed. 2. Local/Remote 3. Press or to select the operating mode you want. 4. Press . ð The operating mode is set. 8.2.11 Setting the COM1 password You can use this parameter to enter a password for the COM1 front inter- face. This enables you to protect the device against unauthorized access via these interfaces. If a COM1 password is assigned, you must first enter the correct password to establish a connection via the interfaces. Note the following information: ▪The password must be at least 1 character long and must not exceed 8 characters. If you enter an empty password (only an end marker), then the COM1 password is deactivated. ▪You can enter alphanumeric characters (A to Z, a to z, 0 to 9) and an end marker (space). ▪If you want to use a password with fewer than 8 characters, you must se- lect the end marker after the last character of your password. ▪Once you save the password, the display changes to xxxxxxxx. The password is only displayed in plain text during text input.

70 3550953/02 EN TAPCON® 230 pro Proceed as follows to set the COM1 password: 1. > Configuration > General > Press until the desired pa- rameter is displayed. ð COM1 password. 2. Enter the current COM1 password. Press or to change a charac- ter and to select the next character. 3. Press . ð The Parallel operation active LED flashes. You can establish a connec- tion via the front interface or enter a new password. 4. Press or to change a character and to select the next char- acter. 5. Press . ð The COM1 password is set. The display changes to xxxxxxxx. 8.2.12 Setting the password duration You can use this parameter to set the period for which the password is ac- tive once it has been entered. If the password is active, the Parallel opera- tion active LED flashes. If you establish a connection via the COM1 front interface, the password re- mains active for as long as data is being transferred via the interface. The set password duration expires the moment that no more data is transmitted. To set the password duration, proceed as follows: 1. > Configuration > General > Press until the desired pa- rameter is displayed. ð Password duration. 2. Press or to increase or decrease the value. 3. Press . ð The password duration is set. 8.3 NORMset NORMset mode is used for quickly starting voltage regulation. In NORMset mode, the bandwidth and delay time parameters are automatically adapted to the requirements of the grid. To start NORMset mode, you must set the following parameters: ▪Normset activation ▪Desired value 1

71 3550953/02 EN TAPCON® 230 pro ▪Primary voltage ▪Secondary voltage Line drop compensation cannot be performed in NORMset mode. Set the following parameters to operate the device in NORMset mode. Activating/deactivating NORMset You can use this parameter to activate NORMset mode. A manual tap-change operation is required to activate NORMset. This is how the voltage regulator determines the bandwidth required. If the transformer is switched off, another manual tap-change operation is required. To activate/deactivate NORMset mode, proceed as follows: 1. > NORMset ð NORMset activation. 2. Press or to activate NORMset by selecting On or to deactivate NORMset by selecting Off. 3. Press . ð NORMset is activated/deactivated. Setting the primary voltage With this parameter, you can set the voltage transformer's primary voltage. To set the primary voltage, proceed as follows: 1. > NORMset > Press until the desired parameter is dis- played. ð Primary voltage. 2. Press to increase the value or to reduce it. 3. Press . ð The primary voltage is set. Setting the secondary voltage With this parameter, you can set the voltage transformer's secondary volt- age.

72 3550953/02 EN TAPCON® 230 pro To set the secondary voltage, proceed as follows: 1. > NORMset > Press until the desired parameter is dis- played. ð Secondary voltage. 2. Press to increase the value or to reduce it. 3. Press . ð The secondary voltage is set. Setting desired value 1 With this parameter, you can set the desired value for automatic voltage reg- ulation. You can enter the desired value in V or in kV. If you enter the de- sired value in V, the value relates to the voltage transformer's secondary voltage. If you set the desired value in kV, the value relates to the voltage transformer's primary voltage. Settings in kV are only possible if you have previously entered the parame- ters for primary and secondary voltage. To set the desired value, proceed as follows: 1. > NORMset > Press until the desired parameter is dis- played. ð Desired value 1. 2. Press to increase the value or to reduce it. 3. Press . ð The desired value is set. 8.4 Control parameters All of the required for the regulation function are described in this section. For voltage regulation, you can set the following parameters: ▪Desired values 1…3 ▪Bandwidth ▪Delay time T1 ▪Control response T1 ▪Delay time T2 For voltage regulation, you can set delay time T1 and also delay time T2. The following sections describe how the regulation function responds in both cases:

73 3550953/02 EN TAPCON® 230 pro Behavior only with delay time T1 If the measured voltage Uactual is within the set bandwidth , no control commands are issued to the motor-drive unit for the tap-change operation. Control commands will also not be issued to the motor-drive unit if the mea- sured voltage returns to the tolerance bandwidth within the set delay time T1 . However, if the measured voltage deviates from the set bandwidth for a long period , a tap-change command occurs after expiration of the set delay time T1. The on-load tap-changer carries out a tap-change in a raise or lower direction to return to the tolerance bandwidth. Figure 41: Behavior of the regulation function with delay time T1 1 + B %: Upper limit 4 Set delay time T1 2 Udesired: Desired value 5 Uactual: Measured voltage 3 - B %: Lower limit 6 B%: Tolerance bandwidth A Uactual is outside the bandwidth. De- lay time T1 starts. B Uactual is within the bandwidth be- fore delay time T1 is complete. C Uactual is outside the bandwidth. De- lay time T1 starts. D Uactual is still outside the bandwidth when delay time T1 is complete. Tap-change operation is initiated. Behavior with delay times T1 and T2 Delay time T2 can be used to correct major control deviations more quickly. Ensure that you set a lower value in the "Delay time T2" parameter than in the "Delay time T1" parameter. If the measured voltage Uactual deviates from the set bandwidth for a long period , a control impulse is output to the motor-drive unit after the set de- lay time T1 . If the measured voltage Uactual is still outside the bandwidth,

74 3550953/02 EN TAPCON® 230 pro delay time T2 starts once delay time T1 is complete. Once delay time T2 is complete, a control impulse is again output to the motor-drive unit for the tap change to return to the tolerance bandwidth. Figure 42: Behavior of the regulation function with delay times T1 and T2 1 + B %: Upper limit 4 Set delay times T1 and T2. 2 Udesired: Desired value 5 Uactual: Measured voltage 3 - B %: Lower limit 6 B%: Tolerance bandwidth A Uactual is outside the bandwidth. De- lay time T1 starts. B Delay time T1 complete. Tap change triggered. C Delay time T2 complete. Tap change triggered. The following sections describe how to set the relevant control parameters. 8.4.1 Setting desired value 1...3 You can use this parameter to set up to 3 desired voltage values URef. The desired voltage value is specified as a fixed value. The desired value 1 is the default desired value. Desired values 2 and 3 are activated if there is a con- tinuous signal at factory-preset control inputs X4:17 or X4:18 provided you have programmed these previously. If there is a signal at several control in- puts at the same time, desired value 2 is activated.

75 3550953/02 EN TAPCON® 230 pro Options for setting the desired values The device provides the following ways of changing the desired voltage value during operation: ▪Using the control parameters menu item via the operating screen ▪Using binary inputs ▪Using control system protocols if a communication card is ready for opera- tion Reference of kV and V for voltage transformer Desired values set in kV refer to the primary voltage of the voltage trans- former. Desired values set in V refer to the secondary voltage of the voltage transformer. The transformer data must be entered correctly for this display. To set the desired value, proceed as follows: 1. > Control parameter > voltage regulator > Press until the desired parameter is displayed. 2. If you have already entered the transformer data, press to select the unit you want: "V" or "kV". 3. Press to highlight the position. ð The desired position is highlighted and the value can be changed. 4. Press to increase the value or to reduce it. 5. Press . ð The desired value is set. 8.4.2 Selecting a desired value You can use this parameter to select the active desired value 1, 2 or 3. If you select the desired value using appropriately configured GPIs, this pa- rameter's setting is ignored. Refer to the Configuration [►Section 8.11, Page 116] section for more information about GPI configuration. Proceed as follows to select a desired value: 1. > Control parameter > Voltage regulation > Press until the desired parameter is displayed. ð Desired value selection 2. Press or to select an active desired value. 3. Press . ð The selected desired value is active.

76 3550953/02 EN TAPCON® 230 pro 8.4.3 Bandwidth You can use this parameter to set the maximum permissible deviation in measured voltage UAct. The deviation relates to the activated desired value. The following sections describe how you determine and set the bandwidth required. 8.4.3.1 Determining bandwidth In order to set the correct value, the transformer's step voltage and nominal voltage must be known. Too small/large a bandwidth You have to set the bandwidth in such a way that the output voltage of the transformer (UAct) returns to within the specified tolerance bandwidth after the tap change. If too small a bandwidth is defined, the output voltage ex- ceeds the bandwidth selected and the device immediately issues a tap- change command in the opposite direction. If a very large bandwidth is se- lected, this results in a major control deviation. The following value is recommended for the bandwidth setting: Figure 44: Recommended bandwidth Un-1 Step voltage of tap position n-1 Un Step voltage of tap position n Unom Nominal voltage The following transformer values are used to determine the recommended bandwidth: Nominal voltage Unom = 11,000 V Step voltage in tap position 4 UStep4 = 11,275 V Step voltage in tap position 5 UStep5 = 11,000 V The following section describes how you can set the bandwidth.

77 3550953/02 EN TAPCON® 230 pro 8.4.3.2 Setting the bandwidth To enter the determined bandwidth, proceed as follows: 1. > Parameter > Control parameter > Press until the de- sired parameter is displayed. 2. Press to highlight the position. ð The desired position is highlighted and the value can be changed. 3. Press to increase the value or to reduce it. 4. Press . ð The bandwidth is set. 8.4.3.3 Visual display The deviation from the set bandwidth is shown visually in the device's dis- play. The measured voltage highlighting shows whether the measured voltage is above, within or below the set bandwidth . Progress of delay time T1 is indicated by the gradual filling of the time bar . The seconds display above this indicates the remaining delay time T1. Figure 45: Visual display of deviation from desired value 1 Bandwidth (upper and lower limit) 4 Desired voltage value Udesired 2 Time bar for delay time T1 5 Remaining delay time T1 3 Measured voltage Uactual 8.4.4 Setting delay time T1 Use this parameter to set delay time T1. This function delays the issuing of a tap-change command for a defined period. This prevents unnecessary tap- change operations if the tolerance bandwidth is exited.

78 3550953/02 EN TAPCON® 230 pro To set the delay time T1, proceed as follows: 1. > Parameter > Control parameter > Press until the de- sired parameter is displayed. 2. Press to highlight the position. ð The desired position is highlighted and the value can be changed. 3. Press to increase the time or to reduce it. 4. Press . ð The delay time T1 is set. 8.4.5 Setting control response T1 The control response T1 can be set to linear or integral. Linear control response T1 With linear control response, the device responds with a constant delay time regardless of the control deviation. Integral control response T1 With integral control response, the device responds with a variable delay time depending on the control deviation. The greater the control deviation (ΔU) in relation to the set bandwidth (B), the shorter the delay time. The de- lay time can therefore be reduced down to 1 second. This means that the device responds faster to large voltage changes in the grid. Regulation accu- racy improves as a result but the frequency of tap-changes increases too. Figure 46: Diagram showing integral control response ΔU/B Control deviation "ΔU" as % of desired value as ratio to the set bandwidth "B" as % of desired value 1 "Delay time T1" parameter

79 3550953/02 EN TAPCON® 230 pro To set the control response T1, proceed as follows: 1. > Parameter > Control parameter > Press until the de- sired parameter is displayed. 2. Press or to set the response you want. 3. Press . ð The control response T1 is set. 8.4.6 Setting delay time T2 With this parameter, you can set delay time T2. Delay time T2 is used to compensate for large control deviations faster. The delay time T2 only takes effect if more than one tap-change operation is required to return the voltage to within the set bandwidth. The first output pulse occurs after the set delay time T1. After the set tap-change delay time T2 has elapsed, additional pulses occur in order to correct the existing con- trol deviation. The following requirements must be noted to set delay time T2: ▪The delay time T2 must be greater than the switching pulse time. ▪The delay time T2 must be greater than the maximum operating time of the motor-drive unit. ▪The delay time T2 must be less than the value set for delay time T1. To set the delay time T2, proceed as follows: 1. > Parameter > Control parameter > Press until the desired parameter is displayed. ð Delay time T2. 2. Press to increase the time or to reduce it. 3. Press . ð The delay time T2 is set. Activating/deactivating delay time T2 To activate/deactivate delay time T2 , proceed as follows: 1. > Parameter > Control parameter > Press until the de- sired parameter is displayed. ð T2 activation. 2. Press or to activate/deactivate T2. 3. Press . ð The delay time T2 is activated/deactivated.

80 3550953/02 EN TAPCON® 230 pro 8.5 Limit values In the Limit values menu item, you can set all the parameters needed for limit value monitoring as relative or absolute values. You can set three limit values: ▪Undervoltage U< ▪Overvoltage U> ▪Overcurrent I> Limit value monitoring is used to reduce damage to the system periphery. The following sections describe how you can set the parameters. 8.5.1 Setting undervoltage monitoring U< You can use these parameters to set the limit values for an undervoltage. Undervoltage monitoring prevents tap-change operations if there is a power cut.

81 3550953/02 EN TAPCON® 230 pro Behavior If the measured voltage Uactual falls below the set limit value , the red LED U< lights up . The switching pulses to the motor-drive unit are blocked at the same time provided you have activated the blocking undervoltage U< parameter. Once the set signaling delay time [►Section , Page 82] has passed, the signaling relay activates. The Undervoltage U< message ap- pears in the display. The message is reset as soon as the measured voltage Uactual again exceeds the limit value for undervoltage . If the measured volt- age Uactual falls below 30 V (for example when the transformer is switched off), the undervoltage message is also displayed. You can however sup- press [►Section , Page 83] this message. Figure 47: Response to value falling below limit value 1 + B%: Upper limit 7 Uactual: Measured voltage 2 Udesired: Desired value A Value falls below limit value 3 - B%: Lower limit B Undervoltage U< message is dis- played 4 Set limit value for undervoltage U< C Voltage falls below 30 V 5 Limit value for suppressing alarms below 30 V D Voltage exceeds 30 V again 6 Set signaling delay time for limit value for undervoltage U< E Value exceeds limit value Setting undervoltage monitoring U< in % Use the parameter to set the limit value as a relative value.

82 3550953/02 EN TAPCON® 230 pro To set the limit value for undervoltage U< as %, proceed as follows: 1. > Control parameter > Limit values > Press until the desired parameter is displayed. ð U< Undervoltage (%) 2. Press to increase the value or to reduce it. 3. Press . ð The limit value for undervoltage U< is set. Setting signaling delay for undervoltage U< You can use this parameter to set the delay time after which the Undervolt- age relay is to activate and the event message appear on the display. This can be used to prevent messages from being issued when the value briefly falls below the limit value. The undervoltage LED always lights up immedi- ately regardless. To set the delay time for this message, proceed as follows: 1. > Control parameter > Limit values > Press until the desired parameter is displayed. ð U< Delay 2. Press to highlight the position. ð The desired position is highlighted and the value can be changed. 3. Press to increase the time or to reduce it. 4. Press . ð The signaling delay time for undervoltage U< is set. Activating/deactivating undervoltage blocking You can use this parameter to set how the device behaves if the voltage falls below the undervoltage limit. You can select the following options: Setting Function On Automatic regulation is blocked. Off Automatic regulation remains active. Table 11: Behavior

83 3550953/02 EN TAPCON® 230 pro To activate/deactivate the undervoltage blocking, proceed as follows: 1. > Control parameter > Limit values > Press until the desired parameter is displayed. ð U< blocking. 2. Press for On setting or for Off setting. 3. Press . ð Undervoltage blocking is activated/deactivated. Activating/deactivating message for voltages below 30 V You can use this parameter to set whether the Undervoltage message is to be suppressed at a measured value of less than 30 V. This setting is used to ensure that no event message appears when the transformer is switched off. You can select the following options: Setting Function On The Undervoltage message is also displayed when the measured value is less than 30 V. Off The Undervoltage message is no longer displayed when the measured value is less than 30 V. Table 12: Response To activate/deactivate the message, proceed as follows: 1. > Control parameter > Limit values > Press until the desired parameter is displayed. ð U< also under 30 V. 2. Press for On setting or for Off setting. 3. Press . ð The message is activated/deactivated. 8.5.2 Setting overvoltage monitoring U> You can use these parameters to set the limit values for overvoltage moni- toring. This overvoltage monitoring triggers tap-change operations to return to the desired operating status. If the operating status can no longer be cor- rected, a message is triggered by the Function monitoring relay.

84 3550953/02 EN TAPCON® 230 pro Response to high-speed return If the measured voltage Uactual exceeds the set limit value , the red LED U> and associated signaling relay activate. The Overvoltage U> message ap- pears in the display. At the same time, the high-speed return function is acti- vated without delay time T1. Once the set switching pulse time has passed, the tap position is lowered by activating the motor-drive unit until the measured voltage Uactual again falls below the limit value . The Over- voltage U> message is reset. Figure 48: Response to limit value being exceeded 1 Set limit value for overvoltage U> 6 Uactual: Measured voltage 2 + B %: Upper limit A Value exceeds limit value 3 Udesired: Desired value B Value falls below limit value 4 - B %: Lower limit C High-speed return is started (lower tap-change) 5 Set switching pulse time Response to overvoltage blocking If you activated the overvoltage blocking, all switching pulses to the motor- drive unit are blocked when a limit value is exceeded. At the same time, the red LED U> lights up and the Overvoltage U> message is displayed. As soon as the measured voltage Uactual has again fallen below the limit value, blocking and the message are reset. The following sections describe how you can set the parameters for the overvoltage U> limit value.

85 3550953/02 EN TAPCON® 230 pro Setting overvoltage U> as % The limit value is entered as a relative value (%) of the set desired value. To set the limit value, proceed as follows: 1. > Control parameter > Limit values > Press until the desired parameter is displayed. ð U> Overvoltage (%) 2. Press to increase the value or to reduce it. 3. Press . ð The limit value is set. Activating overvoltage blocking/high-speed return You can use this parameter to set how the device responds to overvoltage. The following settings are possible: Setting Behavior On During overvoltage, the device blocks all switch pulses to the motor-drive unit. Off In the event of overvoltage, a high-speed return is un- dertaken until the value again falls below the limit value. Table 13: Possible settings To set the device's response to overvoltage, proceed as follows: 1. > Control parameter > Limit values > Press until the desired parameter is displayed. ð Overvolt. blocking U>. 2. Press or to set the option you want. 3. Press . ð The response is set. 8.5.3 Setting overcurrent monitoring I> You can use this parameter to set the limit value for overcurrent to prevent tap-change operations in the event of excess load currents. If the measured current exceeds the set limit value, the red LED I> lights up. The Overcurrent message appears in the display. The device's output pulses are blocked at the same time.

86 3550953/02 EN TAPCON® 230 pro Setting overcurrent I> as % To set the limit value I> overcurrent for overcurrent blocking, proceed as fol- lows: 1. > Control parameter > Limit values > Press until the desired parameter is displayed. ð Overcurrent I> 2. Press to increase the value or to reduce it. 3. Press . ð The limit value is set. Activating/deactivating overcurrent blocking To activate/deactivate overcurrent blocking, proceed as follows: 1. > Control parameter > Limit values > Press until the desired parameter is displayed. ð Blocking Overcurr. I> 2. Press or to activate (ON)/deactivate (OFF) overcurrent blocking. 3. Press . ð The overcurrent blocking is activated/deactivated. 8.5.4 Set undercurrent monitoring I< These parameters are used to set undercurrent monitoring. As soon as the measured current falls below the set limit value, control is blocked. Setting undercurrent I< To set the limit value for undercurrent monitoring, proceed as follows: 1. > Control parameter > Limit values > Press until the desired parameter is displayed. ð Undercurrent I< [%] 2. Press to increase the value or to reduce it. 3. Press . ð The I< undercurrent limit value is set.

87 3550953/02 EN TAPCON® 230 pro Activating/deactivating I< undercurrent blocking To activate/deactivate undercurrent monitoring, proceed as follows: 1. > Control parameter > Limit values > Press until the desired parameter is displayed. ð Blocking undercurrent I>. 2. Press or to activate (ON)/deactivate (OFF) undercurrent block- ing. 3. Press . ð The I< undercurrent blocking is activated/deactivated. 8.5.5 Activate/deactivate active power monitoring This parameter can be used to set active power monitoring. If blocking is ac- tivated, the control is blocked if a negative active power flow is detected. However, this is only possible if the current transformer connection is con- nected and correctly set. When regulator blocking is deactivated, then the sign of the active power does not affect the regulation. To activate/deactivate regulator blocking, proceed as follows: 1. > control parameter > Compensation > Press until the desired parameter is displayed. ð Neg. active power block. 2. Press or to select the option you want. 3. Press . ð Blocking the regulator with negative active power is activated/deactivated. 8.5.6 Permitted tap positions You can use the parameters described below to restrict the permissible range of tap positions in auto mode. If you activate this function, the device does not switch to tap positions outside the set limits in auto mode. In manual mode, for manual tap changes on the motor-drive unit or for re- mote tap changes via a SCADA system, monitoring of the step limits is not active. This may result in the set limits being exceeded. When switching from manual to auto mode, the tap changer should be within the permitted tap positions. 8.5.6.1 Setting the lowest tap position blocking limit You can define a lower tap position blocking limit to limit the number of tap positions available in operation. When the tap position defined as lower tap position blocking limit is reached, tap position blocking is activated. This pre- vents any further tap change downwards.

88 3550953/02 EN TAPCON® 230 pro To define the lower tap position blocking limit, proceed as follows: 1. > Configuration > Continue > Continue > Tap po- sition > Press until the desired parameter is displayed. ð Lowest tap position 2. Press to highlight a digit. ð The desired position is highlighted and the value can be changed. 3. Press to increase the value or to reduce it. 4. Press . ð The lower tap position blocking limit is defined. 8.5.6.2 Setting highest tap position blocking limit You can define an upper tap position blocking limit to limit the number of tap positions available in operation. When the tap position defined as the upper tap position blocking limit is reached, tap position blocking is activated. This prevents any further tap change upwards. To define the upper tap position blocking limit, proceed as follows: 1. > Configuration > Continue > Continue > Tap po- sition > Press until the desired parameter is displayed. ð Highest tap position 2. Press to highlight a digit. ð The desired position is highlighted and the value can be changed. 3. Press to increase the value or to reduce it. 4. Press . ð The upper blocking limit is defined. 8.5.6.3 Setting the tap position blocking mode You can set the tap position blocking mode in relation to the upper and lower tap position blocking limits: Setting Behavior Off The tap position blocking mode is deactivated Directional During raise and lower tap changes, the device blocks as soon as the defined upper/lower tap position limit is reached or exceeded. Further tap changes are pre- vented. Non-directional The device blocks in both directions as soon as the defined lower/upper tap position limit is reached or ex- ceeded. Further tap changes are prevented. Table 14: Tap position blocking mode

89 3550953/02 EN TAPCON® 230 pro To set the tap position blocking mode, proceed as follows: ü Press to select manual mode. ü Press to change back manually into the defined tap position limits. 1. > Configuration > Continue > Continue > Tap po- sition > Press until the desired parameter is displayed. ð Tap pos. blocking mode 2. Press or to set the option you want. 3. Press . ð The tap position blocking mode is set. 8.6 Compensation You can use the "Compensation" function to compensate for the load-depen- dent voltage drop between the transformer and consumer. The device pro- vides 2 methods of compensation for this purpose: ▪R&X compensation (line drop compensation) ▪Z compensation 8.6.1 Line drop compensation R&X compensation (LDC) requires exact cable data. Line voltage drops can be compensated very accurately using LDC. To set R&X compensation correctly, you need to calculate the ohmic and in- ductive voltage drop in V with reference to the secondary side of the voltage transformer. You also need to correctly set the transformer circuit used. Figure 51: Equivalent circuit

90 3550953/02 EN TAPCON® 230 pro Figure 52: Phasor diagram You can calculate the ohmic and inductive voltage drop using the following formulas. This voltage drop calculation relates to the relativized voltage on the secondary side of the voltage transformer. Formula for calculating the ohmic voltage drop: Formula for calculating the inductive voltage drop: Ur Voltage drop in V due to ohmic line resistance Ux Voltage drop in V due to inductive line resistance IN Nominal current (amps) of selected current-transformer con- nection on device:1 A; 5 A kCT Current transformer ratio kVT Voltage transformer ratio r Ohmic resistance load in Ω/km per phase x Inductive resistance load in Ω/km per phase L Length of line in km K Nominal current factor

91 3550953/02 EN TAPCON® 230 pro Selecting the line drop compensation To select the line drop compensation, proceed as follows: ► > Control parameter > Compensation method. ð Compensation method. ð Press or until the LDC option is displayed. 1. Press . 2. The line drop compensation is selected. The following sections describe how you can set the parameters for the ohmic and inductive voltage drop. 8.6.1.1 Setting the ohmic voltage drop Ur You can use this parameter to set the ohmic voltage drop (ohmic resistance load). If you do not want to use line drop compensation, you have to set the value 0.0 V. To set the ohmic voltage drop Ur, proceed as follows: ü Select the LDC compensation method. 1. > Parameter > Compensation > Press until the desired parameter is displayed. ð Ur line drop compensation. 2. Press to highlight the position. ð The desired position is highlighted and the value can be changed. 3. Press to increase the value or to reduce it. 4. Press . ð The ohmic voltage drop Ur is set. 8.6.1.2 Setting the inductive voltage drop Ux You can use this parameter to set the inductive voltage drop (inductive resis- tance load). The compensation effect can be rotated by 180° in the display using a plus or minus sign. If you do not want to use line drop compensation, you have to set the value 0.0 V.

92 3550953/02 EN TAPCON® 230 pro To set the inductive voltage drop Ux, proceed as follows: ü Select the LDC compensation method. 1. > Parameter > Compensation > Press until the desired parameter is displayed. ð Ux line drop compensation. 2. Press to highlight the position. ð The desired position is highlighted and the value can be changed. 3. Press to increase the value or to reduce it. 4. Press . ð The inductive voltage drop Ux is set. 8.6.2 Z compensation To keep the voltage constant for the consumer, you can use Z compensation to activate a current-dependent increase in voltage. You can also define a limit value to avoid excess voltage on the transformer. Figure 54: Z compensation To use Z compensation, you need to calculate the increase in voltage (ΔU) taking the current into account. Use the following formula for this purpose: ∆U Voltage increase I Load current in A UTr Transformer voltage with cur- rent I IN Nominal current of current-trans- former connection in A (1 A; 5 A ) ULoad Voltage on line end with current I and on-load tap-changer in same operating position kCT Current transformer ratio

93 3550953/02 EN TAPCON® 230 pro Sample calculation: UTr = 100.1 V, ULoad = 100.0 V, IN = 5 A kCT = 200 A/5 A, I = 100 A Produces a voltage increase ∆U of 0.2% The following sections describe how you can set the parameters you need for Z compensation. Select Z compensation To select the line drop compensation, proceed as follows: ► > Control parameter > Compensation method. ð Compensation method. ð Press or until the Z option is displayed. 1. Press . 2. The Z compensation is selected. The following sections describe how you can set the required parameters for Z compensation. 8.6.2.1 Setting Z compensation This parameter sets the voltage increase ∆U previously calculated. If you do not want to use Z compensation, you have to set the value 0.0 %. To set the current dependent voltage increase, proceed as follows: ü Select Z compensation. 1. > Parameter > Compensation > Press until the desired parameter is displayed. ð Z compensation. 2. Press to increase the value or to reduce it. 3. Press . ð The current-dependent voltage increase is set. 8.6.2.2 Setting the Z compensation limit value You can use this parameter to define the maximum permissible voltage in- crease to avoid excess voltage on the transformer.

94 3550953/02 EN TAPCON® 230 pro If you do not want to use a limit value, you have to set the value 0.0 %. To set the limit value for the current-dependent voltage increase, proceed as follows: ü Select Z compensation. ü Set the "Z compensation" parameter 1. > Parameter > Compensation > Press until the desired parameter is displayed. ð Z comp. limit value. 2. Press to increase the value or to reduce it. 3. Press . ð The limit value is set. 8.7 Transformer data The transformation ratios and measuring set-up for the voltage and current transformers used in the system can be set with the following parameters. The device uses this information to calculate the corresponding measured values on the primary side of the current transformer (and therefore the transformer) from the recorded measured values. These are then displayed. The following parameters are available for this purpose: ▪Primary voltage ▪Secondary voltage ▪Primary current ▪Secondary current (current transformer connection) ▪Transformer circuit The measured values displayed for the device are influenced by the settings for the above parameters. Note the table below. Parameter set Measured value display Primary voltage Secondary voltage Primary cur- rent Trans- former con- nection Voltage (main screen) Current (main screen) Current (info screen) - Yes - - Secondary voltage [V] - Secondary current [% of connection] Yes Yes - - Primary voltage [kV] - Secondary current [% of connection] Yes Yes Yes - Primary voltage [kV] Primary current [A] Secondary current [% of connection]

95 3550953/02 EN TAPCON® 230 pro Parameter set Measured value display Primary voltage Secondary voltage Primary cur- rent Trans- former con- nection Voltage (main screen) Current (main screen) Current (info screen) Yes Yes - Yes Primary voltage [kV] - Secondary current [A] Yes Yes Yes Yes Primary voltage [kV] Primary current [A] Secondary current [A] Table 15: Influence of transformer data on measured value display 8.7.1 Setting the primary transformer voltage This parameter can be used to set the primary transformer voltage in kV. When you are setting the primary transformer voltage, the device shows the primary voltage rather than the secondary voltage in the main screen and you can also set the control parameters in kV. If a setting of 0 kV is chosen, no primary transformer voltage is displayed. To set the primary transformer voltage, proceed as follows: 1. > Configuration > Transformer data. ð Primary voltage. 2. Press to highlight the decimal place. ð The decimal place is defined and the value can be changed. 3. Press to highlight the position. ð The desired position is highlighted and the value can be changed. 4. Press to increase the value or to reduce it. 5. Press . ð The primary transformer voltage is set. 8.7.2 Setting the secondary transformer voltage This parameter can be used to set the secondary transformer voltage in V. To set the secondary transformer voltage, proceed as follows: 1. > Configuration > Transformer data > Press until the desired parameter is displayed. ð Secondary voltage. 2. Press to highlight the position. ð The desired position is highlighted and the value can be changed. 3. Press to increase the value or to reduce it.

96 3550953/02 EN TAPCON® 230 pro 4. Press . ð The secondary transformer voltage is set. 8.7.3 Setting primary transformer current This parameter can be used to set the primary transformer current. ▪When you are setting the primary transformer current, the measured value is displayed in the main screen. ▪If you set a value of 0, no measured value is displayed in the main screen. Setting parameter Current feed Display Primary current Secondary current Power connection Info screen Primary/secondary current Main screen No parameterization Unknown 1 A 100 % 0 A No parameterization 1 A 1 A 1 A 0 A 50 A Unknown 1 A 100 % (of primary cur- rent) 50 A (of primary cur- rent) 50 A 1 A 1 A 1 A (of secondary cur- rent) 50 A (of primary cur- rent) Table 16: Example of unit displayed: %/A To set the primary transformer current, proceed as follows: 1. > Configuration > Transformer data > Press until the desired parameter is displayed. ð Primary current. 2. Press to highlight the position. ð The desired position is highlighted and the value can be changed. 3. Press to increase the value or to reduce it. 4. Press . ð The primary transformer current is set. 8.7.4 Setting the current transformer connection This parameter can be used to set the current transformer connection. This setting is needed for the device to display the correct secondary current in the info screen.

97 3550953/02 EN TAPCON® 230 pro If you select the "Unknown" option, the percentage of current (with reference to the current transformer connection used) is displayed in the info screen. ▪1 A ▪5 A Proceed as follows to set the current-transformer connection: 1. > Configuration > Transformer data > Press until the desired parameter is displayed. ð Current-transformer connection 2. Press or to select a current-transformer connection. 3. Press . ð The current-transformer connection is set. 8.7.5 Setting the phase difference for the current transformer/voltage transformer You can use this parameter to set the phase difference of the current trans- former and voltage transformer. You can set the common transformer cir- cuits as follows: Tap-change operation Setting Measurement method Phase difference A 0 1PH 1 phase 0° B 0 3PHN 3 phase 0° C 0 3PH 3 phase 0° D 90 3PH 3 phase 90° E 30 3PH 3 phase 30° F -30 3PH 3 phase -30° Table 17: Set values for transformer circuit Note the following sample circuits to select the correct transformer circuit.

98 3550953/02 EN TAPCON® 230 pro Circuit A: 1-phase measurement in 1-phase grid TAPCON® 230 Figure 57: Phase difference 0 1PH ▪The voltage transformer VT is connected to the outer conductor and neu- tral conductor. ▪The current transformer CT is looped into the outer conductor. ▪The voltage UL1 and current IL1 are in phase. ▪The voltage drop on an outer conductor is determined by the current IL1. Circuit B: 1-phase measurement in 3-phase grid TAPCON® 230 Figure 58: Phase difference 0 3PHN ▪The voltage transformer VT is connected to the outer conductors L1 and neutral. ▪The current transformer CT is looped into the outer conductor L1. ▪The voltage U and current I are in phase. ▪The voltage drop on an outer conductor is determined by the current IL1.

99 3550953/02 EN TAPCON® 230 pro Circuit C: TAPCON® 230 Figure 59: Phase difference 0 3PH ▪The voltage transformer VT is connected to the outer conductors L1 and L2. ▪The current transformer CT1 is looped into the outer conductor L1 and CT2 into the outer conductor L2. ▪The current transformers CT1 and CT2 are connected crosswise in paral- lel (total current = IL1 + IL2). ▪The total current IL1 + IL2 and voltage UL1-UL2 are in phase. ▪The voltage drop on an outer conductor is determined by the current: (IL1 + IL2) / √3. Circuit D TAPCON® 230 Figure 60: Phase difference 90 3PH ▪The voltage transformer VT is connected to the outer conductors L1 and L2. ▪The current transformer CT is looped into the outer conductor L3. ▪The current IL3 is ahead of voltage UL1-UL2 by 90°. ▪The voltage drop on an outer conductor is determined by the current IL3.

100 3550953/02 EN TAPCON® 230 pro Circuit E TAPCON® 230 Figure 61: Phase difference 30 3PH ▪The voltage transformer VT is connected to the outer conductors L1 and L2. ▪The current transformer CT is looped into the outer conductor L2. ▪The current IL2 is ahead of voltage UL2-UL1 by 30°. ▪The voltage drop on an outer conductor is determined by the current IL2. Circuit F TAPCON® 230 Figure 62: Phase difference -30 3PH ▪The voltage transformer VT is connected to the outer conductors L1 and L2. ▪The current transformer CT is looped into the outer conductor L1. ▪The current IL1 lags behind UL1-UL2 by 30°. This corresponds to a phase shift of -30°. ▪The voltage drop on an outer conductor is determined by the current IL1.