ComAp IG-NT - Protections and Alarm Management; Protection Types Explained

IS-NT-Async-SPI, SW Version 1.2, ©ComAp – February 2011
IS-NT-Async-SPI-1.2.PDF
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Protections and Alarm management
Protection groups
There are two groups of protections in the controller: fix and customer configurable.
Setpoint group
Analog protections Configurable Analog protect
Generator protections Configurable Gener protect
Mains protections Configurable Mains protect
Fix protections Fix Engine params,
Gener protect,
Mains protect,
Analog protect
Protection types
Level Protection
types
Abbre
viation
Gen-set action Record
1
History record
Hst None History only
1
Alarm only
Al None (Alarm disappears when becomes
inactive and Fault Reset button is pressed.)
Alarmlist only
1
Warning
Wrn None Alarmlist and History
1
AL indication
ALI None (Alarm disappears automatically,
when becomes inactive.)
Alarmlist only
1
A+H indication
AHI None Alarmlist and History
2
Low power
LoP Load is ramped-down to Gener protect:
Min power PtM. After protection becomes
inactive, the power limitation is
automatically terminated (no fault reset
necessary).
Alarmlist and History
2
Off load
OfL SEM, AUT modes:
Controller opens GCB without soft
unloading, gen-set runs 1 minute at
Nominal RPM. Gen-set state changes to
Cooling and Stop 1 minute after Off load
activation.
Controller starts automatically GCB
synchronizing (or closes GCB) when Off
load is deactivated (no fault reset
necessary).
MAN mode:
Controller opens GCB without soft
unloading and the gen-set runs without
load until operator intervention.
All generator protections are active during
Off load duty.
Alarmlist and History
2
Breaker Open
& Cool-down
BOC Controller opens GCB without soft
unloading, gen-set state changes to
Cooling and Stop. Fault reset must be
activated for next start.
Alarmlist and History
1
Mains
protection
MP Controller opens GCB, gen-set stays
running.
History only
2
Slow stop
Stp Soft unloading then the GCB opens, the
gen-set state changes to Cooling and Stop.
Alarmlist and History
2
Shutdown
Sd Controller opens GCB without soft Alarmlist and History