Inteli NT GeCon MINT, SW Version 1.4, ©ComAp – June 2007
IGS-NT-GeCon-MINT-1.4.PDF
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2POvrldStEvDel [ s ]
IDMT curve shape selection. 2PovrldStEvDel is the Reaction time of IDMT protection for 200% overload
Pgen = 2* OverldStrtEval.
Step: 0,1 s
Range: 0,0 - 600,0 s
Protection: BreakerOpen & Cool-down.
IDMT is inverse proportional to the generator overload. The higher the overload gets the less time will elapse
before the protection activates.
When the IDMT protection is activated the GCB is opened, the event is recorded in the Alarmlist and History,
and the engine will cool down and stop.
Where Reaction time is the amount of time from IDMT detection to the opening of the GCB.
Hint:
The maximum allowable Reaction time is 3600 sec.
Reaction time is the amount of time from IDMT detection to the opening of the GCB.
Following example shows reaction times for OverldStrtEval = 100% in dependence on generator power and
setpoint 2PovrldStEvDel value:
Pgen [%] <=100 101 102 105 110 120 150
2POvrldStEvDel [s]
0,1 No action 10 5 2 1 0,5 0,2
0,2 No action 20 10 4 2 1 0,4
0,5 No action 50 25 10 5 2,5 1
1,0 No action 100 50 20 10 5 2
1,5 No action 150 75 30 15 7,5 3
2,0 No action 200 100 40 20 10 4
2,5 No action 250 125 50 25 12,5 5
5,0 No action 500 250 100 50 25 10
10,0 No action 1000 500 200 100 50 20
20,0 No action 2000 1000 400 200 100 40
50,0 No action No action 2500 1000 500 250 100
Following example shows reaction times for OverldStrtEval = 110% in dependence on generator power and
setpoint 2PovrldStEvDel value:
Pgen [%] <=110 111 112 115 120 150 200
2POvrldStEvDel [s]
0,1 No action 11 5,5 2,2 1,1 0,275 0,123
0,2 No action 22 11 4,4 2,2 0,55 0,245
0,5 No action 55 27,5 11 5,5 1,375 0,612
1,0 No action 110 55 22 11 2,75 1,223
1,5 No action 165 82,5 33 16,5 4,125 1,834
2,0 No action 220 110 44 22 5,5 2,445
2,5 No action 275 137,5 55 27,5 6,875 3,056
5,0 No action 550 275 110 55 13,75 6,112
2POvrldStEvDel * OverldStrtEval
Reaction time =
Pgen - OverldStrtEval
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