ABB REF630 - Current Reversal and WEI Logic for Residual Overcurrent (RCRWPSCH)

Table 80. Current reversal and WEI logic for residual overcurrent (RCRWPSCH)
Characteristic Value
Operation accuracy At the frequency f = f
n
±1.5% of the set value or ±0.002 × U
n
Operate time accuracy ±1.0% of the set value or ±20 ms
Table 81. Current reversal and WEI logic for residual overcurrent (RCRWPSCH) main
settings
Parameter
Function Value (Range) Step
Reversal mode RCRWPSCH Off
On
-
Wei mode RCRWPSCH Off
Echo
Echo & Trip
-
Residual voltage Val RCRWPSCH 0.05...0.70 pu 0.01
Reversal time RCRWPSCH 0.000...60.000 s 0.001
Reversal reset time RCRWPSCH 0.000...60.000 s 0.001
Wei Crd time RCRWPSCH 0.000...60.000 s 0.001
Feeder Protection and Control 1MRS756380 A
REF630
Product version: 1.0 Issued: 15.09.2009
54 ABB