ComAp IG-NT Reference Manual page 143

Force value YES
possible
Description This setpoint adjusts the reaction time of the IDMT EarthFault Current protection if
the current is 200% of the base level given by the setpoint
The reaction time of the IDMT EarthFault Current protection is not fixed; it depends
on how much is the current above the limit (base level). The higher is the current
the shorter the reaction time will be.
E
XAMPLE OF
N
OTE
The IDMT EarthFault Current protection is Breaker open and cool down (BOC)
type.
N
OTE
This protection's internal counter accumulates and it starts continuously decreasing
when the EarthFault Current goes below
the protection from completely reseting when the EarthFault Current goes below
Nom EthFltCurr
breaker with thermal current protection.
Setpoint: ExcitationLoss
Group Gener protect
Range [units] 0 .. 150 [%]
Related FW 3.0
Force value YES
possible
Inteli NT MINT, SW Version 3.0, ©ComAp –May 2013
IGS-NT-MINT-3.0 Reference Guide.PDF
IDMT
CURRENT PROTECTION CURVE
:
:
for only a short period of time. This behavior emulates circuit-
Nom EthFltCurr.
Nom EthFltCurr. This function prevents
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