Differential protection
M13081-1 v12
Table 33. High impedance differential protection, single phase 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 x U
d
to 0
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 x U
d
to 0
Min. = 50 ms
Max. = 70 ms
Critical impulse time
15 ms typically at 0 to 2 x U
d
-
1MRK 511 404-BEN A
Bay control REC670 2.2
Product version: 2.2.1
58
ABB