InteliLite
NT
– AMF20/25, SW version 2.2, ©ComAp – September 2014 79
IL-NT-AMF-2.2-Reference Guide.pdf
Step:
1h
Range:
0
– 10000 h
Gener Protect
Hint:
All electric protections when activated result in shutdown or BOC.
The generator protections are evaluated from different voltages based on ConnectionType setting:
3W 4Ph
– Ph-Ph voltage
3W 3Ph
– Ph-Ph voltage
Split Ph
– Ph-N voltage
Mono Ph
– Ph-N voltage
Overload BOC
[%]
Threshold for generator overload (in % of Nominal power) protection. Protection is BOC (Breaker
Open and genset Cooldown).
Step:
1% of Nominal power
Range:
0
– 200%
Overload Del
[s]
Delay for generator overload alarm.
Step:
0.1s
Range:
0
– 600.0 s
Short Crct BOC
[%]
BOC (Breaker Open and genset Cooldown) occurs when generator current reaches
Short Crct BOC
limit.
Step:
1 % of
Nominal current
Range:
100
– 500 %
Short Crct Del
[s]
Delay for generator shortcurrent alarm.
Step:
0.04s
Range:
0.00
– 10.00 s
*Amps IDMT Del
[s]
IDMT curve shape selection.
Amps
IDMT Del
is Reaction time of IDMT protection for 200%
overcurrent Igen = 2*
Nomin Current
.
Step:
0,1 s
Range:
0,1
– 600,0 s
IDMT is “very inverse” generator over current protection. Reaction time is not constant but depends on
generator over current level according following formula.
Hint:
Reaction time is limited up to 3600 sec = 1 hour. IDMT protection is not active for Reaction time values
longer than 1 hour.
Igen is maximal value of all measured phases of generator current.
EXAMPLE of Reaction time for different over current levels. Values in column 200% are
IDMT Curr
Del.
Amps IDMT Del
*
Nomin Current
Reaction time =
Igen -
Nomin Current
