ComAp InteliCompact NT Reference Guide

InteliCompact
NT
, SW version 2.1
InteliCompact-NT-2.1-Reference Guide.pdf, ©ComAp – May 2015
112
NOTE:
Vector shift is evaluated only while the gen-set is working parallel to the mains.
If vector shift protection is activated mains circuit breaker is opened.
6.12.2 Healthy mains detection
The mains are considered to be healthy when all of following conditions are valid:
 The mains voltage is within the limits given by the setpoints Mains >V and Mains <V.
 The mains frequency is within the limits given by the setpoints Mains >Freq and Mains <Freq.
 The alarm MCB fail is not active.
 The binary input Ext MF Relay is not active.
NOTE:
There is a hysteresis for Mains under and over voltage added in the same way as in the InteliLiteNT
family.
6.12.3 The AMF procedure
When the mains failure is detected, the following steps are performed:
1. If the setpoint MCB Opens On is set to MAINSFAIL, the MCB is opened
2. The timer for automatic start of the gen-set EmergStart Del begins to count down.
3. After the timer has elapsed, the gen-set is started.
NOTE:
The automatic start of the gen-set due to AMF function can be disabled by the input
MainsFailBlock. If the gen-set is already running and the input is activated, the gen-set will
cool down and stop. The control of breakers is not affected by this input.
4. If the setpoint MCB Opens On is set to GENRUN, the MCB is opened once the generator
voltage is within limits.
5. If the mains are restored to health and the gen-set is still not connected to the load, the
controller interrupts the startup process and closes back the MCB.
6. The GCB is closed and the gen-set begins to supply the load.
7. After the mains are restored to normal, the timer MainsReturnDel begins to count down and
when finished, either reverse synchronizing or switchover is performed. This depends on the
binary input RevSyncDisable. If active, switchover is performed instead of reverse
synchronizing.
8. Maximum time between closing of GCB and opening MCB is given by the setpoint
BreakerOverlap.
9. If no demand for parallel operation is active (binary input Rem Start/Stop), the GCB is opened
and the gen-set cools down and a stop follows.
NOTE:
For a description of how to make a test of AMF function, see the chapter operating modes, TEST
mode paragraph.
6.13 Engine cool down and stop
The cool down phase follows after the stop command has been issued and the GCB has been
opened.
 Duration of the cool down phase is determined by the setpoint Cooling Time.

ComAp InteliCompact NT Specifications

General

Brand	ComAp
Model	InteliCompact NT
Category	Controller
Language	English