Basler AVC63-2.5 Instruction Manual

PHONE 618/654-2341 FAX 618/654-2351 INTRODUCTION The AVC63-2.5 Voltage Regulators are designed for use on 50/60 Hz brushless generators. The regulator includes frequency compensation, a solid-state build-up circuit, EMI filtering, and remote adjust capability. Warning To prevent personal injury or equipment damage, only qualified technicians or operators should install, operate, or service this device. ELECTRICAL SPECIFICATIONS Dc Output Power: 2.5 Adc at 63 Vdc (157.5W) maximum continuous, 3.97 Adc at 100 Vdc (397W) forcing one minute (at 240 Vac input). Exciter Field Dc Resistance: 25.2 ohms minimum. Ac Power Input: Operating range: 171 to 264 Vac, +10%, Single phase, 50/60 Hz, Burden: 350 VA. Sensing Input: 171-264 Vac, +10%, Single phase, 50/60 Hz, Burden: 350 VA. Regulation Accuracy: Better than ±1.0% no load to full load. EMI Suppression: Internal electromagnetic interference filter (EMI filter). Voltage Build-up: Internal provisions for automatic voltage build- up from generator residual voltages as low as 10 Vac. Terminations: 1/4 inch "Fast-On" terminals. PHYSICAL SPECIFICATIONS Operating Temperature: -40° C (-40° F) to +60° C (+140° F). Storage Temperature: -40° C (-40° F) to +85° C (+185° F). Vibration: Withstands 1.5 Gs at 5 to 29 Hz; 0.036" double amplitude at 29 to 52 Hz; and 5 Gs at 52 to 500 Hz. Shock: Withstands up to 15 Gs in each of three mutually perpendicular axes. Weight: 3.8 oz. (0.107 kg) Net. FUSES It is recommended that fuses with high interruption capability be installed per the interconnection diagram to protect wiring from faults before the regulator. Refer to the Interconnection Drawings. NOTE Fuse must be installed per the interconnection diagrams to avoid inter- rupting the field current. AVC63-2.5 Outline Diagram (Top View) AVC63-2.5 Outline Diagram (Side View) V/HZ "CORNER FREQUENCY" SELECTION AND ADJUSTMENT The corner frequency can be adjusted by the UF ADJ rheostat on the AVR. Clockwise rotation results in raising the corner frequency (shifting the curve to the right). To set the UF rheostat: 1. Adjust the UF Rheostat fully CCW. 2. Start the generator and set at rated voltage. 3. Adjust the generator frequency to the desired kneepoint frequency. 4. Slowly adjust the UF ADJ rheostat clockwise (CW) until the generator voltage just begins to decrease. Typical Frequency Compensation Curves OPERATION The following system operation procedures provide instructions for adjusting the AVC63- 2.5 voltage regulator. Symptoms resulting from a faulty regulator and certain generator system problems are included, together with suggested remedies. Complete the following steps before proceeding with the system start-up. CAUTION Meggers and high potential test equipment must not be used. Incorrect use of such equipment could damage the semiconductors contained in the regulator. PRELIMINARY SET-UP 1. Verify that the voltage regulator specifications conform with the generator system requirements. 2. Ensure the voltage regulator is correctly connected to the generator system. 3. Install the fuses as described in Fuses. 4. Set the regulator VOLT ADJ and external VOLT ADJ (if used) as follows: Regulator VOLT ADJ: Fully CCW Remote VOLT ADJ: Centered SYSTEM START-UP 1. Perform preliminary set-up as described in the above paragraphs. NOTE All voltage readings are to be taken with an average reading voltmeter. 2. Start prime mover and bring up to rated speed. RESULT: Voltage should build up. If not, perform Field Flashing. 3. Slowly adjust the regulator VOLT ADJ CW until the generator output voltage reaches the nominal value. If used, adjust the remote VOLT ADJ to set the generator voltage to the exact value desired. RESULT: Voltage should build up to rated value. If voltage does not build up to rated value, check generator for short or excessive load. CONFIDENTIAL INFORMATION OF BASLER ELECTRIC COMPANY, HIGHLAND, IL. IT IS LOANED FOR CONFIDENTIAL USE, SUBJECT TO RETURN ON REQUEST, AND WITH THE MUTUAL UNDERSTANDING THAT IT WILL NOT BE USED IN ANY MANNER DETRIMENTAL TO THE INTEREST OF BASLER ELECTRIC COMPANY. Publication: 9 3183 00 991 © 1998, Basler Electric Co., Highland, IL 62249 First Printing January 1998 Revision: A March 1998 INSTRUCTION MANUAL FOR VOLTAGE REGULATOR Model: AVC63-2.5 Part Number: 9 3183 00 101

and loading conditions. RESULT: Voltage regulation should be better than ±1.0% no-load to full-load. If regulation is not within this range, perform the following steps: 1. Voltage reduction under load may be due to speed change from no load to full load, causing the frequency compensation (V/Hz) circuit to reduce voltage at lower frequencies. 2. Replace voltage regulator. OPERATIONAL TEST 1. Connect the test setup as shown in the following figure, Operational Test. Do not apply power. Ensure that the light bulb is rated for 120 V and is less than 100 W. 2. Adjust the regulator VOLT ADJ and/or remote VOLT ADJ to maximum CW. 3. Apply 240 V, 50/60 Hz power to the regulator. The light bulb should illuminate. 4. Slowly adjust the regulator VOLT ADJ control CCW. At the regulation point, the light bulb should extinquish. The following notes (∆) apply to the intercon- nection diagrams: 1. If external pot is not used, short terminals 6 and 7. 2. Item not supplied by Basler Electric. 3. Select fuses with high interrupting capacity. 4. Excitation On/Off Switch (If Used). Operational Test Interconnection Diagram, 277/480 V Nominal, 3-Phase, 4-Wire, Wye Connection Interconnection Diagram, 120/240 V Nominal, 1-Phase, 3-Wire Interconnection Diagram, 120/208 V Nominal, 3-Phase, 4-Wire, Wye Connection Potentiometer and Connector Locations