Woodward GCP-30 Series - Page 64

Manual 37278B GCP-30 Series - Genset Control
Page 64/174 © Woodward
Synchronization of the MCB [GCP-32]
The MCB will be synchronized with frequency and voltage correction if the following conditions are met simul-
taneously:
Automatic mode
• The operation mode AUTOMATIC has been selected
• One of the circuit breaker logics (Parameter 126) "PARALLEL" (mains parallel operation), "INTER-
CHANGE" (m
ains interchange (import/export) real power control) or "CLOSED TRANSIT." (make-before-
break/overlap synchronization) has been selected
• No class F2 or F3 alarms are present
• The busbar has been energized (the control measures a voltage)
• The mains voltage is present and within the permissible limits
• The engine is running and the generator voltage and frequency are within the permissible limits
• The discrete input "Reply: GCB is open" has not been enabled (the GCB is closed)
• The discrete input "Enable MCB" has been enabled;
• The rotating field of the generator and the mains voltages are identical and no alarms are displayed
Manual operation
• The operation mode MANUAL has been selected;
• One of the circuit breaker logics (Parameter 126) "PARALLEL" (mains parallel operation), "INTER-
CHANGE" (m
ains interchange (import/export) real power control) or "CLOSED TRANSIT." (make-before-
break/overlap synchronization) has been selected;
• No class F2 or F3 alarms are present;
• The busbar has been energized (the control measures a voltage);
• The mains voltage is present and within the permissible limits;
• The engine is running and the generator voltage and frequency are within the permissible limits;
• The discrete input "Reply: GCB is open" has not been enabled (the GCB is closed);
• The discrete input "Enable MCB" has been enabled;
• The push-button "MCB ON" has been pressed;
• Load test: On termination of the load test (circuit breaker logics (Parameter 126) "INTERCHANGE" (mains
i
nterchange (import/export) real power control) or "CLOSED TRANSIT." (make-before-break/overlap syn-
chronization), the GCB is opened;
• The rotating field of the generator and the mains voltages are identical (and no alarms are displayed);