ABB REC670 Product Manual page 58

Bay control REC670 2.2
Product version: 2.2.1
Differential protection
Table 33. High impedance differential protection, single phase HZPDIF
Function
Operate voltage
Reset ratio
Maximum continuous power
Operate time at 0 to 10 x U
d
Reset time at 10 x U to 0
d
Critical impulse time
Operate time at 0 to 2 x U
d
Reset time at 2 x U to 0
d
Critical impulse time
58
M13081-1 v12
Range or value
(10-900) V
I=U/R
>95% at (30-900) V
2
U>Trip /SeriesResistor ≤200 W
Min. = 5 ms
Max. = 15 ms
Min. = 75 ms
Max. = 95 ms
2 ms typically at 0 to 10 x U
d
Min. = 25 ms
Max. = 35 ms
Min. = 50 ms
Max. = 70 ms
15 ms typically at 0 to 2 x U
d
1MRK 511 404-BEN A
Accuracy
±1.0% of I at I ≤ I
r r
±1.0% of I at I > I
r
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ABB