InteliLite
NT
– AMF20/25, SW version 1.2, ©ComAp – March 2008
69
IL-NT-AMF-Reference Guide1.2.pdf
There are three different time delays for CB fail detection – see following diagrams.
When is BO GCB close/open (MCB close/open) in steady state and GCB feedback (MCB feedback) is
changed the GCB fail is detected immediately (no delay).
Alarm: GCB fail
BO GCB close/open
BI GCB feedback
Alarm detection:
immediatelly
active
closed
opened
Alarm: GCB fail
BI GCB feedback
BO GCB close/open
Alarm detection:
immediatelly
active
opened
closed
When BO GCB close/open (MCB close/open) opens there is 5 sec delay for GCB fail (MCB fail)
detection
.
Alarm: GCB fail
BO GCB close/open
BI GCB feedback
active
opened
opened
Time delay
5 sec
When BO GCB close/open (MCB close/open) closes, there is 5sec delay for GCB fail (MCB fail)
detection:
Alarm: GCB fail
BO GCB close/open
BI GCB feedback
active
closed
closed
Time delay
5 or 2 sec
Hint:
You can solve state of MCB fail by pressing Fault Reset button.