IGS-NT-BC, SW Version 1.2.0, ©ComAp – January 2019
IGS-NT-BC-1.2.0 Reference Guide.PDF
The output can be used for indication of the MCB position.
Binary output: Bank params OK
This output indicates that the bank actually provides proper voltage and
frequency. The output is closed while the bank of gen-sets is running (regardless
of whether BCB is closed or not) and all bank electrical parameters are in limits.
Binary output: Bus Params OK
This output indicates that the bus is healthy. The output is closed while all bus
electrical parameters are in limits.
This output generates 100ms pulse always when the internal kWh counter
incremented.
Binary output: In synchronism
This output is closed during synchronization when all synchro conditions have
been fulfilled. The output is opened either when:
• the synchro conditions are lost or
• the corresponding breaker has been closed or
• the sychronizing was interrupted or timed out.
Synchro conditions are following:
• Phase shift between generator and mains (bus) voltage must be within
range of ±Phase window for period longer than Dwell time.
• Voltage difference between generator and mains (bus) voltage (in all
phases) must be lower or equal to Voltage window for period longer than
Dwell time.
The output is intended for manual synchronization. Automatic closing of GCB
must be disabled for this case. Use the input GCB disable.
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