Woodward GCP-30 Series Configuration

Manual 37278B GCP-30 Series - Genset Control
© Woodward Page 101/174
Mains Voltage Monitoring
Monitoring the mains voltage is absolutely vital if a generator is operated in conjunction with the infinite grid. In
the event of mains failure (e.g. utility power outage) the generator that is operating in parallel with the utility
must be automatically disconnected from the mains. Decoupling from the mains only occurs when both power
circuit breakers (MCB and GCB) are closed.
The line-to-line (wye) voltage is monitored in all cases.
The limit values configured below are utilized for the assessment emergency power operations if the following
parameters are enabled. The parameters below define if the mains are or aren’t present. The breaker opening
times do not affect these parameters.
Function: "Mains voltage not within the permissible range" - If one or more phases of the generator voltage ex-
ceeds the limit values set for overvoltage or undervoltage, the power circuit breaker that disconnects from the
mains is immediately opened. The prerequisite of mains voltage monitoring is that the generator is operating in
mains parallel (the MCB and GCB are both closed).
Parameter 211
Mains voltage
monitoring ON
Mains voltage monitoring ON/OFF
ON ................ Monitoring of the mains voltage will be performed. The subsequent
parameters of this function are displayed.
OFF .............. Monitoring is disabled, and the subsequent screens of this function
are not displayed.
Parameter 212
Mains overvolt.
U > 000.0%
Mains overvoltage threshold value 20.0 to 150.0 %
L This value refers to the parameter "Rated volt. in system" (Parameter 19).
If this threshold value has been exceeded for at least the delay time (Para-
m
eter 213), the following alarm class is issued. Depending on the configured mains
decoupling procedure, the GCB, MCB, or an external CB will be opened.
Issuing of class F0 alarm
Parameter 213
Mains overvolt.
delay 0.00s
Mains overvoltage delay 0.02 to 9.98 s
For the control unit to recognize a mains overvoltage fault condition, the threshold
value configured in Parameter 212 must be exceeded without interruption for this
peri
od of time.
Parameter 214
Mains undervolt.
U < 000.0%
Mains undervoltage threshold value 20.0 to 150.0 %
L This value refers to the parameter "Rated volt. in system" (Parameter 19).
If the current value has been fallen below this threshold value for the delay time
(Parameter 215), the following alarm class is issued. Depending on the configured
m
ains decoupling procedure, the GCB, MCB, or an external CB will be opened.
Issuing of class F0 alarm
Parameter 215
Mains undervolt.
delay 0.00s
Mains undervoltage delay 0.02 to 9.98 s
For the control unit to recognize a mains undervoltage fault condition, the threshold
value configured in Parameter 214 must be exceeded without interruption for this
peri
od of time.

Woodward GCP-30 Series Specifications

General

Brand	Woodward
Model	GCP-30 Series
Category	Controller
Language	English