InteliATS
NT
PWR, SW version 2.5, ©ComAp
– May 2015
68
IA-NT- PWR-2.5-Reference Guide.pdf
EXAMPLE of Reaction time for various over current levels. Values in column 200% are
IDMT Curr
Del.
Igen
Nominal Current
Short Crct Sd
Amps IDMT Del
Maximal Reaction time
R
e
a
c
ti
o
n
ti
m
e
Amps Unbal Trp
[%]
Threshold for generator current asymmetry (unbalance).
Step:
1% of Nominal current
Range:
1
– 200% of Nominal current
Amps Unbal Del
[s]
Delay for generator current unbalance
Step:
0.1 s
Range:
0.0
– 600.0 s
Gen >V Trp
[%]
Threshold for generator overvoltage. All three phases are checked. Maximum out of three is used.
Step:
1% of Nominal voltage
Range:
0(Gen <V Trp)
– 200%
Gen <V Trp
[%]
Threshold for generator undervoltage. All three phases are checked. Minimum out of three is used.
Step:
1% of Nominal voltage
Range:
0%
– 200 (Gen >V Trp)%
Overcurrent
200 % =
IDMT Curr
Del
≤ 100 %
101 %
110 %
Reaction time
0,2 s
No action
20 s
2 s
2 s
No action
200 s
20 s
20 s
No action
No action
(time > 900 s)
200 s
