IGS-NT Combi, SW Version 3.0, ©ComAp – May 2013
IGS-NT-Combi-3.0 Reference Guide.PDF
description of the GCB close/open output.
There are also other outputs availabe for MCB control:
MCB close/open
MCB OFF coil
MCB UV coil
Binary output: MCB OFF Coil
This output is intended for opening of the MCB using OFF coil if a circuit breaker
is used as MCB. The output provides 2 sec pulse when the MCB has to open. If
synchronizing is disabled with the particular breaker, the pulse length is extended
to 5sec. See timing diagram of all available breaker control outputs in the
description of the GCB close/open output.
There are also other outputs availabe for MCB control:
MCB close/open
MCB ON coil
MCB UV coil
Binary output: MCB UV Coil
This output is intended for opening of the MCB using an undervoltage coil if a
circuit breaker is used as MCB.
The output is closed while mains values are within limits. MCB closing
command is blocked for 1 sec after the UV coil has been closed to allow
the breaker mechanical system getting ready for closing.
The output is opened for 2 sec when the MCB has to open. If
synchronizing is disabled with the particular breaker, the length of the
inverse pulse is extended to 5sec.
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