M16051-2 v11
Table 96. Current reversal and weak-end infeed logic for residual overcurrent protection ECRWPSCH
Function Range or value Accuracy
Operate mode of WEI logic Off
Echo
Echo & Trip
-
Operate voltage 3U0 for WEI
trip
(5-70)% of UBase ±0.5% of U
r
Operate time for current
reversal logic
(0.000-60.000) s ±0.2% or ±30 ms whichever is greater
Delay time for current reversal (0.000-60.000) s ±0.2% or ±30 ms whichever is greater
Coordination time for weak-
end infeed logic
(0.000–60.000) s ±0.2% or ±30 ms whichever is greater
Line differential protection RED670
1MRK 505 379-BEN N
120 Hitachi Power Grids
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