Inteli NT MINT, SW Version 2.6, ©ComAp – November 2011
IGS-NT-MINT-2.6-Reference Guide.PDF
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Other CB fail reasons:
−
When the BO CB close/open is in steady state and CB feedback is changed, the CB fail is detected
immediately (no delay).
Alarm: GCB fail
BO GCB close/open
BI G CB feedback
Alarm detection:
immediatelly
active
closed
opened
Alarm: GCB fail
BI GCB feedback
BO GCB close/open
Alarm detection:
immediatelly
active
opened
closed
−
When the BO CB close/open opens, there is 5 resp. 2 sec delay for the breaker to respond before a CB
fail is detected. In such case, if CB OFF coil is used for opening the CB and CB fail occurs during
opening the CB, the signal CB OFF coil is automatically extended until the breaker opening is detected
(evaluated as CB status).
•
2 sec when the CB is used for synchronizing
•
5 sec in other cases
Alarm: GCB fail
BO GCB close/open
BI GCB feedback
active
opened
opened
Time delay
5 sec
−
In case that CB fail is detected after switching the controller on (CB is closed), the CB OFF coil output is
activated immediatelly.