ABB RELION 670 Series Product Manual page 53

Bay control REC670 2.1 IEC
Differential protection
Table 28. High impedance differential protection, single phase HZPDIF
Function
Operate voltage
Reset ratio
Maximum continuous power
Operate time at 0 to 10 x U
Reset time at 10 x U to 0
d
Critical impulse time
Operate time at 0 to 2 x U
Reset time at 2 x U to 0
d
Critical impulse time
ABB
Range or value
(10-900) V
I=U/R
>95% at (30-900) V
2
U>Trip /SeriesResistor ≤200 W
Min. = 5 ms
d
Max. = 15 ms
Min. = 75 ms
Max. = 95 ms
2 ms typically at 0 to 10 x U
Min. = 25 ms
d
Max. = 35 ms
Min. = 50 ms
Max. = 70 ms
15 ms typically at 0 to 2 x U
M13081-1 v12
d
d
1MRK 511 361-BEN D
Accuracy
±1.0% of I at I ≤ I
r r
±1.0% of I at I > I
r
-
-
-
-
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