ComAp IG-NT GC - Circuit Breakers Operation Sequence, CB Fail Detection

IGS-NT-BC, SW Version 1.2.0, ©ComAp – January 2019
IGS-NT-BC-1.2.0 Reference Guide.PDF
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Ld shed del
Ld shed del
Ld shed del
BO Load shed 1
BO Load shed 2
BO Load shed 3
Ld shed level
Gen-set power
closed
closed
closed
Load reconnection – automatic -> AutoLd recon = ENABLED
Ld recon del Ld recon delLd recon del
BO Load shed 2
Ld recon level
Gen-set power
BO Load shed 3
BO Load shed 1
opened
opened
opened
Load reconnection – manual -> AutoLd recon = DISABLED
BO Load shed 2
Ld recon level
G
e
n
-
s
e
t
p
o
w
e
r
BO Load shed 3
BO Load shed 1
BI Man load recon
opened
opened
opened
no action
Circuit breakers operation sequence, CB fail detection
NOTE:
In the following text, “CB” abbreviation is used for BCB (Bank Circuit Breaker) respectively.
Related binary inputs:
- CB fdb – CB feedback binary input
- CB fdb neg – negative CB feedback binary input. Used for increasing the reliability of CB status
evaluated by the controller. In case that it is not configured, negative value of CB fdb is calculated
internally within the controller.