Manual 37278B GCP-30 Series - Genset Control
© Woodward Page 77/174
Synchronization (With Synchronous Generators Only)
Parameter 131
Synchronize
df max 0.00Hz
Max. perm. differential frequency for synchronization (pos. slip) 0.02 to 0.49 Hz
The prerequisite for a connect command being issued is that the differential fre-
quency is below the configured differential frequency. This value specifies the up-
per frequency (positive value corresponds to positive slip generator frequency is
higher than the busbar frequency in the case of GCB synchronization; busbar fre-
quency is higher than the mains frequency in the case of MCB synchronization).
Parameter 132
Synchronize
df min -0.00Hz
Max. perm. differential frequency for synchronization (neg. slip) 0.00 to-0.49 Hz
The prerequisite for a connect command being issued is that the differential fre-
quency is above the configured differential frequency. This value specifies the low-
er frequency limit (negative value corresponds to negative slip generator fre-
quency is less than the busbar frequency in the case of GCB synchronization;
busbar frequency is lower than the mains frequency for MCB synchronization).
Parameter 133
Synchronize
dV max 00.0%
Max. perm. differential voltage for synchronization 01.0 to 20.0 %
L This value refers to the parameter "Rated volt. in system" (Parameter 19).
A connect command will only be issued when the measured voltage falls below the
configured differential voltage.
Parameter 134
Synchronize
time pulse>0.00s
Min. pulse duration of connect relay for synchronization 0.02 to 0.26 s
The duration of the close pulse can be adjusted to the breaker (valid for synchroni-
zation and dead bus start).
Parameter 135
Closing time
GCB 000ms
Inherent delay of GCB for synchronization 40 to 300 ms
The inherent closing time of the GCB corresponds to the lead-time of the close
command. The close command will be issued independently of the differential fre-
quency at the entered time before the synchronous point.
Parameter 136
Closing time
MCB 000ms
Inherent delay of MCB for synchronization 40 to 300 ms
The inherent closing time of the MCB corresponds to the lead-time of the close
command. The close command will be issued independently of the differential fre-
quency at the entered time before the synchronous point.
Parameter 137
Automat.breaker
deblocking ON
only B + X Packages
Automatic circuit breaker deblocking ON/OFF
ON ................ Prior to each close pulse, a "Command: open GCB", or "Command:
open MCB" is issued for 1 second. A close signal is then enabled un-
til the breaker is closed.
OFF .............. Initialization of the circuit breaker initialization on closing is per-
formed only by the close pulse. No open pulse is issued prior to the
close pulse.