Saci MTA36 Operation & User’s Manual

-1- 1. SAFETY PRECAUTIONS The manufacturer is not responsible of the failure comply with the instructions in this manual. CAUTION: Ensure that only qualified technicians work on the installation and maintenance. Never work alone. The electrical parameters supplied should be within the nominal range Before any work with or on the equipment, isolate the voltage inputs and auxiliary power supplies, cut the secondary of all CTs (current transformers), but never cut the secondary of the PT. (Power Transformers) Always use an appropriate voltage sensing device to ensure that everything is switched off and that no voltage is present in any part of the equipment Risk in the device ◆ The voltage of the auxiliary power supply is outside the nominal range ◆ The frequency of the power distribution system is outside the nominal range. ◆ The input polarity of the voltage or current is connected incorrectly. ◆ Remove or connect communication connections without switching off the device. ◆ Connect the cables to the terminal contrary to the instructions. "Danger" is used to warn workers that a danger exists; if the "Danger" is ignored, it will cause severe personal injury, death, equipment damage or property damage. "Warning" is used to indicate that death or serious personal injury may occur if proper precautions are not taken.

-2- 2. ABOUT THIS MANUAL This manual deals with the characteristics of the MTA36 measuring device in its different versions and shows the necessary instructions for its correct installation and start-up. The differences between the versions are indicated by a letter and a number at the end of the product description. At the end of the manual you will find the ModBus register map necessary to communicate with the equipment. However, this manual describes the configuration and start-up of the equipment through the Saci software. This software can be downloaded free from the Saci website (www.saci.es). To install it, you only need to download and run the file. Once executed, follow the installation instructions and you will have access to the application which you can communicate with the equipment. This manual assumes that user has knowledge about the network measurement parameters and knows the measurement and power supply system’s where the equipment will be installed. If you have any questions about this user manual or the equipment, please contact your local Saci distributor.

-3- INDEX 1. SAFETY PRECAUTIONS ............................................................................................................... 1 2. ABOUT THIS MANUAL ............................................................................................................... 2 3. GENERAL DESCRIPTION ............................................................................................................. 5 3.1 Models ................................................................................................................................. 6 4. MEASUREMENT ......................................................................................................................... 6 4.1 Measure parameters through the user interface: .............................................................. 7 4.1.1 Network parameters .................................................................................................... 7 4.1.2 Energy ........................................................................................................................... 7 4.1.3 Harmonics .................................................................................................................... 8 4.1.4 Network quality ............................................................................................................ 9 4.1.5 Demand ........................................................................................................................ 9 4.1.6 Max/Min ..................................................................................................................... 10 4.1.7 Average values ........................................................................................................... 10 4.1.8 Freezing Data .............................................................................................................. 11 5. INSTALLATION ......................................................................................................................... 12 5.1 Dimensions ........................................................................................................................ 12 5.1.1 MTA36L ...................................................................................................................... 12 5.1.2 MTA36R ...................................................................................................................... 12 5.1.3 MTA36F ...................................................................................................................... 12 5.1.4 MTA36-IFLORA ........................................................................................................... 13 5.2 Assembly ........................................................................................................................... 13 5.2.1 Single-phase device assembly: ................................................................................... 13 5.2.2 Three phase device assembly: ................................................................................... 14 5.2.3 Communication module assembly: ............................................................................ 15 6. CONFIGURATION ..................................................................................................................... 17 1º Connect to the device. .................................................................................................... 17 2º Basic Configuration. ........................................................................................................ 17 3º Configuration of the tariffs. ............................................................................................ 19

-4- 4º LoRa configuration .......................................................................................................... 20 5. Module (only for MTA36-IFLORA) ................................................................................... 22 7. TECHNICAL SPECIFICATIONS ................................................................................................... 24 7.1 MTA36 Meters: ............................................................................................................. 24 7.2 MTA36-IFLORA: ............................................................................................................. 26

-5- 3. GENERAL DESCRIPTION The MTA36 measuring transformer stands out because of its easy installation and the high number of network parameters it can measure. These measurement power meters are designed for the calculation and measurement of the electrical variables, voltage, current, frequency, power, power factor, energy, harmonic components, etc. of a power distribution network. It is available for both single-phase and three- phase measurement. Its revolutionary design brings together in the same device the instrument transformer and the meter, which together with its communication options create a versatile and easy-to-install device. DEVICE  It consists of a main transformer on which communications are concentrated and two auxiliary ones (in three-phase network's case) that communicate the measurements to the main transformer.  Possibility of wireless communication through LoRa, making installation even easier and saving costs.  LED indicators for connection and communication.  Insulation piercing installation system for the voltage.  Open transformers that allow the installation of the equipment without opening the circuit. USER'S INTERFACE  Real-time data on all network parameters.  Available in several languages.  Intuitive design. COMMUNICATIONS  ModBus-RTU communication protocol.  Possibility of communication through RS-485 network (up to 9600 bps).  Possibility of wireless communication through LoRa (up to 9600 bps). MEASUREMENTS  Measured in all 4 quadrants. Class 1.  Measurement of maximum and current demand.  Measurement up to the harmonic 31. Measurement of the harmonic distortion of both voltage and current.

-6-  Measurement of network unbalance. TARIFFS  Up to 4 fully configurable tariffs.  Consumption of the current month, the previous 12 months and total consumption. 3.1 Models Model Description MTA36L1 Single-phase power meter with LoRa communications MTA36R1 Single-phase power meter with RS485 communications MTA36L3 Three-phase power meter with LoRa communications MTA36R3 Three-phase power meter with RS485 communications MTA36F3 Auxiliary transformer MTA36-IFLORA RS-485/LoRa communication module 4. MEASUREMENT  Voltage  Current  Power  Power factor  Frequency  Demand  Energy  Total harmonic distortion  Imbalance  Contact point temperature The following list shows the variables that can be measured including relative variables calculated from the basic electrical parameters: Measurement variable Instant Máx Mín Demand Average Sum Units V1 V2 V3 √ √ √ √ [V,kV] V12 V23 V31 √ √ √ √ [V,kV] I1 I2 I3 √ √ √ √ √ [A,kA] F √ √ √ √ [Hz] P P1 P2 P3 √ √ √ √ √ [kW,MW,GW] Q Q1 Q2 Q3 √ √ √ √ [kvar,Mvar,Gvar] S S1 S2 S3 √ √ √ √ [kVA,MVA,GVA] PF PF1 PF2 PF3 √ √ √ √ - EP+ EP- √ [kWh,MWh, GWh]

-7- 4.1 Measure parameters through the user interface: 4.1.1 Network parameters The device measures the voltage, current, frequency, power and power factor of each phase and of the system. 4.1.2 Energy The device supports excellent energy measurement functions such as the following:  Bi-directional energy measurement.  Four quadrants of reactive energy measurement  Metering of tariff energy (CDU) All energy values are calculated on the basis of the secondary value; whose minimum resolution is 1WH of 1varh. Whenever the device is connected, the primary energy value increases or decreases at the rate of 1Wh(1varh). Users can reset the energy data through the application according to specific needs. EQ1 EQ2 EQ3 EQ4 √ [kvarh,MvarhGvarh ] Energy storage √ THDV1 THDV2 THDV3 √ [% ] THDI1 THDI2 THDI3 √ [% ] Harmonics RMS-U (1-31th) √ [% ] Harmonics RMS-I (1-31th) √ [% ] Unbalance-U √ [% ] Unbalance-I √ [% ] Puncture temperature √ ºC

-8- The device supports the tariff energy measurement of four time zones at most. There are two fully configurable tariff days that can be set for all 12 months of the year. 4.1.3 Harmonics The instrument supports network harmonics (2-31st) RMS value. It also measures harmonic distortion and voltage and current unbalance.

-9- 4.1.4 Network quality The device measures the phase angle of voltage and current. The phase angle of voltage and current of each phase is shown. The phase angle of A phase voltage is default set to 0°. The phase angle of other types of signals is shown in relation to the A phase voltage (unit: °). It also measures the voltage deviation and frequency. 4.1.5 Demand The instrument supports independent demand logging channels that can measure the maximum demand value and the present value of both current and power. It is possible to reset the maximum demand from the application.

-10- 4.1.6 Max/Min When the measured value is the maximum or minimum value, in an instant, the instrument will record this value in the non-volatile memory. These maximum or minimum values include three-phase voltage, line voltage, frequency, three-phase current, total and three-phase active power, total and three- phase reactive power, total apparent power and the total power factor. It is possible to reset these values through the application. 4.1.7 Average values The device records the average value of voltage, current, frequency, power and power factor of each phase and of the system.

-11- 4.1.8 Freezing Data The device is capable of recording the active power of each phase and total; and the active energy imported from each phase and total each a certain time, which is adjustable by the user through the configuration menu.

-12- 5. INSTALLATION 5.1 Dimensions 5.1.1 MTA36L 5.1.2 MTA36R 5.1.3 MTA36F The length of the cable connecting the MTA36F with the communication cable is 1m. ∅ 36 92 64 6 18.5 71 20 92 64 6 18.5 71 13 ∅ 36 ∅ 36 90 64 6 18.5 71

-13- 5.1.4 MTA36-IFLORA 5.2 Assembly 5.2.1 Single-phase device assembly: 1 Connect the N line to the Un wiring hole. Use the insulated piercing connector for that. 2 Open the puncture transformer, and connect the transformer to the cable and close the transformer and tighten screws. Make sure that the current direction of the cable is consistent with the arrow on the transformer. N

-14- 3 Tighten the puncture knob until the red power indicator on the transformer is lit. 5.2.2 Three phase device assembly: 1 Connect the N line to the Un wiring hole of the puncture transformer, and tighten the N line wiring hole fastening screws. Use the insulated piercing connector for that. 2 Open the puncture transformer, and connect the MTA36L3 to the L2- phase cable and close the transformer and tighten screws. Make sure that the current direction of the cable is consistent with the arrow on the transformer. 3 Connect two MTA36F3 transformer to the L1-phase and L3- phase cables respectively, and connect the lead wire to the corresponding wiring port of the SDT13. N N L2 N L2 L1 L3

-15- 4 Tighten the puncture knobs until the red power indicator lights on L2 transformer are lit. Note: In the field installation, it is recommended to use insulating gloves to operate to prevent electric shock If the cable diameter is small, the cable can be fixed with a tie. 5.2.3 Communication module assembly: To ensure proper operation of the device, please avoid placing it near high-powered electrical equipment or equipment that can produce strong EMF signals, as this equipment may decrease the transmission power or transmit a poor quality signal. 35mm standard DIN-rail N L2 L1 L3

-17- 6. CONFIGURATION Once the device is installed, the application is downloaded and the communication is made, the device has to be configured according to its installation: 1º Connect to the device. To communicate with the instrument through the ModBus protocol it is necessary that the instrument has an identity (by default all the instruments have the identity 1) When connected to the RS485 model, it can be connected via a COM port or via TCP/IP. In this case you must enter the IP address and port. Once connected, just press the close button and enter the configuration menu 2º Basic Configuration. In the configuration menu we enter the basic configuration menu and introduce the network parameters. Here we can change the identity of the equipment (max 247)*, the freezing data refresh time and the voltage and current input value.

-18- The equipment does not have RCT (Real Clock Time), but the time can be introduced. By pressing the synchronize button, the device will take the date and time from the computer to which it is connected (as it does not have RCT, the time can be delayed, it is advisable to synchronize the device from time to time for its correct operation, mainly in tariff mode). For the demand side configuration, the energy demand is calculated using the arithmetic integration of the power values over a period of time divided by the length of the period. The result is equivalent to the energy accumulated during the period of time divided by the length of the period. The current demand is calculated using the arithmetic integration of the rms current values over a period of time divided by the period length. The duration of the intervals for calculating the demand is taken care of by the equipment. Several methods can be implemented: Fixed block interval (fix): the intervals are consecutive, the power meter calculates and updates the demand at the end of each interval. Note: 15min is only an example. Sliding block interval (slip): the intervals are sliding. The equipment calculates and updates the demand at the slip rate. Note: 15min is only an example. Relative time parameters are set as t (slip time, unit: minutes) and T (slip block interval, unit: minute)

-19- Fixed interval mode means that the average demand value in T minutes is calculated for each T block, and then the value is recorded. A month's demand is automatically recorded at a fixed time. Sliding interval mode means that the average demand value of the last T minutes is calculated, and then the value is recorded. The demand of a month is automatically recorded at a fixed time. *RS485 version: For the RS485 version, the MTA36R, the modbus identity is configured differently. A table with the different identities according to the position of the tab at the top is shown below: TAB POSITION MODBUS IDENTITY 0 User-defined 1 2 2 1 3 3 4 8 5 10 6 9 7 11 8 4 9 6 A 5 B 7 C 12 D 14 E 13 F 0 To change the identity of the 0 position it is necessary to write it from position F. To do this: 1. The tab is positioned in position F. 2. Using the software, the device is connected with the identity 0. 3. Enter the Configuration->Basic configuration menu. 4. Enter the desired identity and press the save button. 5. In the software, the communication with the device is cut off. 6. The tab is changed to position 0. 7. Using the software you connect the device with the desired identity. 3º Configuration of the tariffs. It is possible to configure two different tariff days with time intervals and up to 4 different tariffs. It is also possible to configure which day of the tariff is each month.

-20- 4º LoRa configuration *Only for devices with LoRa communication The equipment has 16 different communication channels, each with different frequencies. The European band is 868 MHz. The frequency, in MHz, of each of the different channels is shown. To configure a channel in the instrument you must place the tab at the top of the device on the number of the channel you want to configure it on. You must take into account that the number 0 corresponds to channel 1, the 1 to channel 2... and so on until the F that corresponds to channel 16. The F channel is recommended not to be

-21- used because it is a synchronization channel used to configure the devices. Its frequency is always the same regardless of the band used Below is a table with the parameters of the 16 channels according to their frequency band:  868 Channel Position Frequency (MHz) Spread spectrum Band width (kHz) Speed in open air (bps) Sensitivity (dBm) 1 0 869.53 7 125 4800 -125 2 1 871.46 7 125 4800 -125 3 2 872.91 7 125 4800 -125 4 3 874.43 7 125 4800 -125 5 4 875.95 7 250 9600 -122 6 5 877.48 7 250 9600 -122 7 6 878.86 7 250 9600 -122 8 7 880.32 7 250 9600 -122 9 8 884.87 8 125 2400 -128 10 9 883.41 8 125 2400 -128 11 A 884.97 8 125 2400 -128 12 B 886.58 8 125 2400 -128 13 C 889.06 12 500 800 -130 14 D 891.39 12 500 800 -130 15 E 894.82 12 500 800 -130 16 F 866.50 7 125 4800 -125  468 Canal Posición Frecuencia (MHz) Spread spectrum Ancho de banda (kHz) Velocidad en el aire (bps) Sensibilidad (dBm) 1 0 471.53 7 125 4800 -125 2 1 473.46 7 125 4800 -125 3 2 474.91 7 125 4800 -125 4 3 476.43 7 125 4800 -125 5 4 477.95 7 250 9600 -122

-22- 6 5 479.48 7 250 9600 -122 7 6 480.86 7 250 9600 -122 8 7 482.32 7 250 9600 -122 9 8 483.87 8 125 2400 -128 10 9 485.41 8 125 2400 -128 11 A 486.97 8 125 2400 -128 12 B 488.58 8 125 2400 -128 13 C 491.06 12 500 800 -130 14 D 493.39 12 500 800 -130 15 E 496.82 12 500 800 -130 16 F 866.50 7 125 4800 -125  915 Canal Posición Frecuencia (MHz) Spread spectrum Ancho de banda (kHz) Velocidad en el aire (bps) Sensibilidad (dBm) 1 0 918.53 7 125 4800 -125 2 1 920.46 7 125 4800 -125 3 2 921.91 7 125 4800 -125 4 3 922.43 7 125 4800 -125 5 4 924.95 7 250 9600 -122 6 5 926.48 7 250 9600 -122 7 6 927.86 7 250 9600 -122 8 7 929.32 7 250 9600 -122 9 8 930.87 8 125 2400 -128 10 9 932.41 8 125 2400 -128 11 A 933.97 8 125 2400 -128 12 B 935.58 8 125 2400 -128 13 C 938.06 12 500 800 -130 14 D 940.39 12 500 800 -130 15 E 943.82 12 500 800 -130 16 F 866.50 7 125 4800 -125 5. Module (only for MTA36-IFLORA) If the MTA36-IFLORA communication module is available, it can be configured through this screen. You can configure the communication channel, which must coincide with the one set in the equipment. It is possible to enter the desired frequency from the manual mode. You can also configure the transmission power (from 0 to 20 mW) and the timeout when receiving and sending records (up to 65535 ms). For example, when the

-23- transmission speed is 4800 bauds in the air, and you want to receive 20 registers, and the sending and response time is 200 ms, it is recommended to set a timeout of 200 ms. On the other hand, it is possible to configure the communication speed between the module and the computer, choosing the speed; the mode is fixed (N-8-1). There is a manual configuration mode where you can set the communication frequency, in MHz, the bandwidth in kHz and the spread spectrum, which indicates the number of bits used to encode a symbol. The higher the SS, the lower the transfer rate, but the higher the immunity to interference A table of the default channel settings is shown below: Channel Frequency (MHz) Spread spectrum Band width (kHz) Speed in open air (bps) Sensitivity (dBm) 1 869.53 7 125 4800 -125 2 871.46 7 125 4800 -125 3 872.91 7 125 4800 -125 4 874.43 7 125 4800 -125 5 875.95 7 250 9600 -122 6 877.48 7 250 9600 -122 7 878.86 7 250 9600 -122 8 880.32 7 250 9600 -122 9 884.87 8 125 2400 -128 10 883.41 8 125 2400 -128 11 884.97 8 125 2400 -128 12 886.58 8 125 2400 -128 13 889.06 12 500 800 -130 14 891.39 12 500 800 -130 15 894.82 12 500 800 -130 16 866.50 7 125 4800 -125

-24- The default identity of the communication module is 0xFF. If this identity conflicts with your installation, please contact us to configure the address according to your preferences. 7. TECHNICAL SPECIFICATIONS 7.1 MTA36 Meters: Precision Voltage and current 0.5% Energy and power factor 1% Frequency ±0.01Hz Active energy IEC62053-22, class 1 Reactive energy IEC62053-23, class 2 Puncture temperature ±2 ºC Working environment conditions Storage temperature -25°C -- 70°C Relative humidity ≤95%RH，non-condensing Working altitude ≤2500m Antifouling level No corrosion gas Protection grade Panel IP54，case IP20 Insulation Resistance of the signal, power and output terminal to the shell is >100MΩ Withstand voltage Input and power supply≥2kV， input and output≥2kV ， power supply and output≥2kV Cable section Minimum: 16mm2 Maximum: 510mm2 Working power supply Nominal range AC/DC（80～270）V Consumption ≤5VA Withstand voltage ≥2kV Voltage input Range 3×230/400V Resolution 0.1 V Impedance ≥1.7 MΩ/phase Consumption ≤0.1 VA /phase Overload Continuous：1.2Vn，Instantaneous：2Vn/10s Frequency 45-65 Hz

-25- Current input Range 50（600）A Resolution 1 mA Impedance ≤20mΩ/phase Consumption ≤0.2 VA /phase Overload Continuous：1.2In, Instantaneous：10In/5s Communication interface Physical interface RS-485 LoRa Baud rate Up to 9600bps Up to 9600bps Communication protocol Modbus-RTU Modbus-RTU Insulation voltage 2000 VAC (1 min) -- Communication rate -- 1 km indoor 10 km outdoor Electromagnetic compatibility Electrostatic discharge immunity Level IEC 61000-4-2-III Radiated susceptibility Level IEC 61000-4-3-III Electrical fast transient pulse immunity Level IEC 61000-4-4-IV Shock (surge) noise immunity Level IEC 61000-4-5-IV Conducted interference noise immunity of radio frequency field induced conduction Level IEC 61000-4-6-III Power frequency magnetic field immunity Level IEC 61000-4-8-III Voltage sag and short interruption immunity Level IEC 61000-4-11-III

-26- 7.2 MTA36-IFLORA: Wireless interface T/R frequency 860MHz～900MHz，0.1MHz Modulation method LORA Transmitting power +17.6dBm/100mW Receiving sensitivity [email protected] RS485 interface Communication method Semi duplex Baud rate 2400～19200bps, defaulted as 9600bps Data format n81 Power supply Voltage range AC/DC 80～270V Consumption <2VA Working environment -25℃～70℃，≤93%RH Storage environment -40℃～85℃，≤93%RH Communication rate 1 km indoor 10 km outdoor