Woodward GCP-20 Series User Manual

Manual 37128A GCP-20 Series - Genset Control
© Woodward Page 117/190
Generator Voltage Monitoring
The line-to-line (wye) voltage is monitored.
Function: "Generator voltage not within the permissible range" - If one or more phases of the generator voltage
exceeds the limit values set for overvoltage or undervoltage, the engine is shut down immediately (class F3
alarm) and an alarm message is displayed. The activation of generator undervoltage monitoring is delayed by
means of "Delayed engine monitoring" (
Parameter 274) in order to enable generator start-up.
Parameter 168
Gen.voltage
monitoring ON
Generator voltage monitoring ON/OFF
ON................ Monitoring of the generator voltage will be performed. The subse-
quent parameters of this function are displayed.
OFF.............. Monitoring is disabled, and the subsequent screens of this function
are not displayed.
Parameter 169
Gen.overvoltage
U > 000V
Generator overvoltage threshold value [1] 70 to 130 V; [4] 10 to 520 V
If this threshold value has been exceeded for at least the delay time (Para-
meter 170), the following alarm class is initiated.
Issuing of class F3 alarm
NOTE
The threshold value for generator overvoltage may not exceed 149 V [1] or 495 V [4] for delta connec-
tions, because higher voltages cannot be detected.
Parameter 170
Gen.overvoltage
delay 0.00s
Generator overvoltage delay 0.02 to 9.98 s
For the control unit to recognize a generator overvoltage fault condition, the
threshold value configured in
Parameter 169 must be exceeded without interruption
for this period of time.
Parameter 171
Gen.undervoltage
U < 000V
Generator undervoltage threshold value [1] 70 to 130 V; [4] 10 to 520 V
If the current value has been fallen below this threshold value for the delay time
(
Parameter 172), the following alarm class is initiated.
Issuing of class F3 alarm
Parameter 172
Gen.undervoltage
Delay time 0.00s
Generator undervoltage delay 0.02 to 9.98 s
For the control unit to recognize a generator undervoltage fault condition, the
threshold value configured in
Parameter 171 must be exceeded without interruption
for this period of time.

Woodward GCP-20 Series Specifications

General

Brand	Woodward
Model	GCP-20 Series
Category	Control Unit
Language	English