Unigen Plus & Industrial Unigen - User technical documentation
-D page 18/19
Voltage setting :
• Adjust AVR Offset RV11 & Gain RV112 full CCW on the Unigen.
• Connect AVR outputs (terminals 20/21) to AVR.
• Adjust voltage offset RV11 to have 400VAC.
• Close ‘SYNC IN’ input (Terminal 3 to 0 volts).
• Adjust AVR Gain RV12 to reach 370VAC.
Check the control of the breaker on dead bus
• Be sure there is no critical load connected on bus bar.
• Close the breaker and verify that the breaker feedback (terminal 5) is closed (the ‘BREAKER IN’ led
should lit).
• Open the breaker and verify that the breaker feedback (terminal 5) is opened (led doesn’t lit).
Adjustment of the nominal power
For the Industrial Unigen :
• Set the kW monitor output in 0-5V: ‘sw4’ on OFF position.
• Put in full CW the multi turn potentiometer ‘adjust’ RV7.
• Close the circuit breaker of the generator. The ‘BREAKER IN’ led must light (terminal 5).
• Apply 100% of load on the generating set (with bench load for example).
• Adjust ‘NOMINAL kW’ potentiometer RV13 to reach 7.45VDC between terminals 11(+) and 12(-) of
the Unigen.
• Open the circuit breaker of the generator.
• Set the good configuration of ‘sw4’ as desired.
For the Unigen Plus:
• Put the ‘sw3’ on OFF position.
• Paralleling lines are not connected on terminals 44 and 45.
• Close the circuit breaker of the generator. The ‘BREAKER IN’ led must light (terminal 5).
• Apply 100% of load on the generating set (with bench load for example).
• Adjust ‘NOMINAL kW’ potentiometer RV13 to obtain 3V on parallel lines (terminal 44 & 45).
• Open the circuit breaker of the generator.
Check wiring of current
• Put load.
• Measure the voltage between terminals 11 and 12.
• Shunt the phase 1 current directly of the secondary of the current transformer (CT).
• Measure the voltage between terminals 11 and 12. Check that this voltage decrease of 1/3 that
before.
• Do the same test for phases 2 and 3 (don’t forget to remove the shunt of each phase after test).
• Set the good configuration of ‘sw3’ as desired.
Check synchronization
• Close the breaker to have voltage on the bus bar (mains or other generator).
• Lock the engine breaker in open position.
• Start the engine to check the synchronization.
• Close ‘SYNC IN’ input (terminal 3 to 0VDC).
• Adjust the P (RV15) & I (RV1) potentiometer of synchronization to have a response time of 4 or 5
seconds to get the ‘SYNC OK’ signal (terminals 34/35) the relay closes.
• With a voltmeter check on both sides of the breaker if the voltage is <20VAC on each phases.
• With the voltmeter check also that there is 400VAC between phase 1 of the engine and phase 2 of the
bus bar (crossed monitoring).
• In this test we don’t close the breaker.
• If the test is OK, connect the wires of the relay ‘SYNC OK’ (terminals 34/35) of the Unigen.
Load sharing / kW regulation
• Regarding the application check the stability of KW and kVAR regulation.
• Stop engines.
To Next Page
Loading...
Need help?
General
