ComAp InteliCompact NT Reference Guide

InteliCompact
NT
, SW version 2.1
InteliCompact-NT-2.1-Reference Guide.pdf, ©ComAp – May 2015
281
Alarm: Generator under/overfrequency
Alarm type
Breaker open & cool down
Alarmlist
message
BOC Gen >Freq, BOC Gen <Freq
Alarm evaluated
Generator excited only
Related
applications
All
Description
This alarm evaluates the generator frequency in the phase L3. The following
setpoints are related to it:
 Gen >Freq BOC adjusts the overfrequency limit.
 Gen <Freq BOC adjusts the underfrequency limit.
 Gen Freq Del adjusts the alarm delay.
NOTE:
The generator voltage must be within limits to enable closing of GCB or
starting of synchronization.
Alarm: Generator IDMT overcurrent
Alarm type
Breaker open & cool down
Alarmlist message
BOC Overcurrnt
Alarm evaluated
All the time
Related
applications
All
Description
The overcurrent alarm is based on IDMT principle. The reaction time of an
IDMT alarm is not fixed, but depends on how much is the protected value
(generator current in this case) above the limit (nominal current). The higher
is the overcurrent, the shorter the reaction time will be. All generator phases
are evaluated.
The behaviour of the overcurrent alarm is adjusted by the following setpoint:
 Amps IDMT Del which defines the reaction time of the protection
when the current is twice the amount of nominal value.
The nominal current level, where the alarm starts to be evaluated, is given
by Nomin Current. The reaction time is infinite at this point.

ComAp InteliCompact NT Specifications

General

Brand	ComAp
Model	InteliCompact NT
Category	Controller
Language	English