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Chapter 6. Description of Operation of Protection Subsystem
M7IRDA2003I
7IRD-A/J/M: Distribution Protection & Control Terminal
© ZIV APLICACIONES Y TECNOLOGÍA, S.L.U. 2020
6-22
6.8
Trip and Close Coil Circuit Supervision
This function will initiate an alarm if either the trip or close coil circuits are open circuited or there
is a loss of DC control voltage. Supervision is achieved in both the open and closed positions of
the circuit breaker. The supervision function generates two outputs,
Trip Coil Circuit
Supervision Failure (FCD)
and
Close Coil Circuit Supervision Failure (FCC)
. These two
outputs can be assigned to any of the programmable Auxiliary Contact Outputs.
The Trip and Close Coil Circuit Supervision functions can be independently disabled. The block
diagram depicting this feature (in the open breaker condition) is shown in the following figure.
Figure 6.12
Trip/Close Coil Circuit Supervision Block Diagram.
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Страница 175: ...D List of Illustrations and Tables...