Woodward GCP-30 Series - Mains Decoupling

Manual 37365A GCP-30 Series Packages - Genset Control
© Woodward Page 89/179
Mains Decoupling
NOTE
If the mains monitoring (frequency and voltage) is disabled, decoupling from the mains is not per-
formed.
Parameter 132
Mains decoupling
via ------
[GCP-31]
Decoupling from the mains via ... GCB; GCBEXT; EXTERNAL; EXTGCB
GCB ............. If a mains failure (Parameter 179 through Parameter 193) occurs the
GCB will be opened. A mains failure is detected by means of the
mains voltage (terminals 50/51/52).
GCBEXT . If a mains failure (Parameter 179 through Parameter 193) occurs the
GCB will b
e opened. A mains failure is detected by means of the
mains voltage (terminals 50/51/52). If the GCP does not receive the
reply that the GCB has opened (terminal 4 energizes) prior to the
time configured in Parameter 134 expiring, an F1 alarm will be is-
su
ed and the relay assigned relay manager function 76 will be ener-
gized. The "Command: open GCB" relay (terminal 41/42) will de-
energize and the "Command: Open external CB" relay (termin-
als 39/40) will energize.
Issuing of F1 class alarm
EXTERNAL If a mains failure (Parameter 179 through Parameter 193) occurs the
"Command: Open external CB" relay (terminals 39/40) will be ener-
gized. A mains failure is detected by means of the mains voltage
(terminals 50/51/52).
EXTGCB . If a mains failure (Parameter 179 through Parameter 193) occurs the
"Co
mmand: Open external CB" relay (terminals 39/40) will be ener-
gized. A mains failure is detected by means of the mains voltage
(terminals 50/51/52). If the GCP does not receive the reply that the
external CB has opened (terminal 54 energizes) prior to the time con-
figured in Parameter 134 expiring, an F1 alarm
will be issued and the
relay assigned relay manager function 77 will be energized. The
"Command: Open external CB" relay (terminals 39/40) will de-
energize and the "Command: open GCB" relay (terminals 41/42) will
energize.
Issuing of F1 class alarm