Current protection
Table 48. Instantaneous phase overcurrent protection PHPIOC
Function
Range or value
Accuracy
Operate current
(5-2500)% of lBase
±
1.0% of I
r
at I ≤ I
r
±
1.0% of I at I > I
r
Reset ratio
> 95% at (50–2500)% of IBase
-
Operate time at 0 to 2 x I
set
Min. = 15 ms
Max. = 25 ms
-
Reset time at 2 to 0 x I
set
Min. = 15 ms
Max. = 25 ms
-
Critical impulse time
10 ms typically at 0 to 2 x I
set
-
Operate time at 0 to 10 x I
set
Min. = 5ms
Max. = 15ms
-
Reset time at 10 to 0 x I
set
Min. = 25ms
Max. = 40 ms
-
Critical impulse time
2 ms typically at 0 to 10 x I
set
-
Dynamic overreach
< 5% at
t
= 100 ms
-
1MRK 505 346-BEN -
Line differential protection RED670 2.1 IEC
Product version: 2.1
ABB
67
Содержание RED670 Relion 670 series
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