Differential protection
M13081-1 v11
Table 28. 1Ph High impedance differential protection HZPDIF
Function
Range or value
Accuracy
Operate voltage
(10-900) V
I=U/R
±1.0% of I
r
at I ≤ I
r
±1.0% of I at I > I
r
Reset ratio
>95% at (30-900) V
-
Maximum continuous power
U>Trip
2
/SeriesResistor ≤200 W
-
Operate time at 0 to 10 x U
d
Min. = 5 ms
Max. = 15 ms
Reset time at 10 to 0 x U
d
Min. = 75 ms
Max. = 95 ms
Critical impulse time
2 ms typically at 0 to 10 x U
d
-
Operate time at 0 to 2 x U
d
Min. = 25 ms
Max. = 35 ms
Reset time at 2 to 0 x U
d
Min. = 50 ms
Max. = 70 ms
Critical impulse time
15 ms typically at 0 to 2 x U
d
-
1MRK 511 361-BEN B
Bay control REC670 2.1 IEC
Product version: 2.1
46
ABB
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