OM-2245 / Operation and Maintenance Manual
ITW GSE 4400 / 400 Hz. Generator Set
March 15, 2015
Chapter 2-3
Page 2
c) Generator Low Power Testing:
1)
Place unit in ‘AVR Battery Only’ Di
agnostic Mode.
2) Press engine button to start engine. Engine should start and run at idle speed, 1000 RPM.
3) Using the Parameters Screens, verify Output voltage is regulated to 28 volts (± 5V), line to N, on
display.
DISPLAYED Voltage A__________ VAC B __________ VAC C __________ VAC
4) Check that the PWM Duty Cycle reads 35%. (± 5%)
Duty Cycle __________%
5) Press Output button (any Output) to make engine go to rated speed, 2000 RPM. (Output will not
function.)
6) Verify Output voltage is regulated to 50 volts (± 5V), line to N, on display.
DISPLAYED Voltage A__________ VAC B __________ VAC C __________ VAC
7) Check PWM Duty Cycle reads 30%. (± 5%)
Duty Cycle __________%
8) Press engine button to shut down unit.
9) Disable Diagnostic Mode.
d) 400Hz Initial Testing and Setup:
1) Connect Output cable(s) to the appropriate load bank(s) with interlock enabled (as required)
2) Press engine button to start engine. Engine should go straight to rated speed.
3) Verify Output frequency on power analyzer. (400Hz, ±2Hz)
Measured Frequency: __________Hz
4) Verify Output voltage, line to N.
5) MEASURED Voltage A__________ VAC B __________ VAC C __________ VAC
6) Check PWM Duty Cycle reads 20%. (± 5%)
Duty Cycle __________%
e) Output
1
Verification:
1) Make sure that the EF switch is in the ON position on the load bank and turn on Output 1.
Contactor must close and indicator on the display panel illuminate.
2) Verify 'ABC' phase rotation at the load bank.
3) Turn the EF switch OFF on the load bank and verify that contactor opens and fault is displayed.
Red lamp on display should flash.
4) Reset Output 1 by pressing Output 1 button again. Display should resume normal operation with
no faults.
5) If Output 2 is not available, skip to g) below.
Содержание 4400
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