Inteli NT MINT, SW Version 2.6, ©ComAp – November 2011
IGS-NT-MINT-2.6-Reference Guide.PDF
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Derating1 pwr
[ % ] (FV)
Derating2 pwr
[ % ] (FV)
The ratio of decreasing of the gen-set nominal power at
DeratingX end
level.
Step:
1 % of
Nomin power
Range:
0 - 100 % of
Nomin power
Hints:
DeratedX power
= 90% means the nominal power reduction
to
90%, not by 90%.
Derating ratio is set to zero and functions are not active when Analog inputs PowerDeratingX are not
configured (e.g. in default configuration).
When Power derating function is active, the generator nominal power is decreased to
DeratedX power
and
so Overload protection (BOC Overload) is based on this Derated power!
The generator nominal power is reduced according to the bigger restriction – the more reduced channel out
of the two.
Process control:
Derating1Start
[X]
Derating1End
[X]
Derated1Power
[%]
Power derating 1
analog input
Nominal power
influences Overload
protection etc.
Power derating
Process control:
Derating2Start
[X]
….
Power derating 2
analog input
Synchro enable
[ NONE / FORWARD ] (FV)
Enable or disable forward synchronization.
NONE: No synchronizing is enabled. Only closing GCB to dead bus allowed in this case.
FORWARD: GCB synchronizing is enabled.
Force value possibility: Yes
#Neutral cont.
[ EACH / COMMON ]
Setpoint changes behavior of binary output Neutral CB C/O that is used for Neutral contactor control.
EACH: Separate Neutral contactors and four pole GCB’s are supposed on each engine.
b) When GCB is opened (after start, before stop):
Binary output Neutral CB C/O (Neutral contactor) closes when Generator voltage is higher than 85%
of Nominal voltage.
Binary output Neutral CB C/O (Neutral contactor) opens when Generator voltage is lower than 50%
of Nominal voltage.
c) When more gen-sets are connected to the bus and MCB is opened (island running group) Binary
output Neutral CB C/O (Neutral contactor) is closed on running gen-set with the lowest
Contr.address
only. When lower controller address gen-set is connected to the bus, Neutral
contactor connection changes.
d) Binary output Neutral CB C/O (Neutral contactor) is opened when gen-sets are running in parallel to
the mains (MCB is closed).