Manual 37278B GCP-30 Series - Genset Control
Page 84/174 © Woodward
Mains Decoupling
NOTE
If the mains monitoring (frequency and voltage) is disabled, no mains decoupling is performed.
Parameter 159
Mains decoupling
via ------
at GCP-31 only
Decoupling from the mains via ... GCB; GCB->EXT; EXT; EXT->GCB
GCB ............. If a mains failure (Parameter 206 to Parameter 219) occurs the GCB
will be opened. (The mains failure is detected by means of the mains
voltage [terminals 50/51/52]).
GCB->EXT .. If a mains failure (Parameter 206 to Parameter 219) occurs the GCB
will b
e opened. (The mains failure is detected by means of the mains
voltage [terminals 50/51/52]). An alarm message will be issued with
the end of the delay time (Parameter 161) if terminal 4 does not
det
ect a reply that the GCB has opened. The relay assigned relay
manager function 76 will be energized as well. The "Command: open
GCB" relay (terminal 41/42) will be de-energized and the "Com-
mand: MCB open" relay (terminals 39/40) is energized.
Issuing of class F1 alarm
EXT .............. If a mains failure (Parameter 206 to Parameter 219) occurs the relay
with the "Command: MCB open" relay (terminals 39/40) will be
energized. (The mains failure is detected by means of the mains vol-
tage [terminals 50/51/52]).
EXT->GCB .. If a mains failure (Parameter 206 to Parameter 219) occurs the relay
with
the "Command: MCB open" relay (terminals 39/40) will be
energized. (The mains failure is detected by means of the mains vol-
tage [terminals 50/51/52]). An alarm message will be issued with the
end of the delay time (Parameter 161) if terminal 54 does not detect a
repl
y that the breaker has opened. The relay assigned relay manager
function 77 will be energized as well. The "Command: MCB open"
relay (terminals 39/40) will be de-energized and the "Command:
open GCB" relay (terminals 41/42) is energized.
Issuing of class F1 alarm
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