ABB RELION RED670 Series Product Manual page 69

Line differential protection RED670 2.2
Product version: 2.2
Differential protection
Table 30. Restricted earth-fault protection, low impedance REFPDIF
Function
Operating characteristic
Reset ratio
Minimum pickup, IdMin
Directional characteristic
Operate time, trip at 0 to 10 x IdMin
Reset time, trip at 10 x IdMin to 0
Second harmonic blocking
Table 31. 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
ABB
M13062-1 v20
Range or value
Adaptable
> 95%
(4.0-100.0)% of IBase
Fixed 180 degrees or ±60 to ±90
degrees
Min. = 15 ms
Max. = 30 ms
Min. = 15 ms
Max. = 30 ms
60.0% of fundamental (hidden
setting)
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
Accuracy
±1.0% of I at I ≤ I
r r
±1.0% of I at I > I
r
-
±1.0% of I
r
±2.0 degrees
-
-
±1.0% of I
r
Accuracy
±1.0% of I at I ≤ I
r
±1.0% of I at I > I
-
-
-
-
1MRK 505 379-BEN C
r
r
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