Table 41. Current reversal and weak-end infeed logic (CRWPSCH)
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 42. Current reversal and weak-end infeed logic (CRWPSCH) main settings
Parameter
Function
Value (Range)
Step
Reversal mode
CRWPSCH
1 = Off
2 = On
-
Wei mode
CRWPSCH
1 = Off
3 = Echo
4 = Echo and Operate
-
PhV level for Wei
CRWPSCH
0.10...0.90 × U
n
0.01
PPV level for Wei
CRWPSCH
0.10...0.90 × U
n
0.01
Reversal time
CRWPSCH
0...60000 ms
10
Reversal reset time
CRWPSCH
0...60000 ms
10
Wei Crd time
CRWPSCH
0...60000 ms
10
Table 43. Communication logic for residual overcurrent (RESCPSCH)
Characteristic
Value
Operate time accuracy
±1.0% of the set value or ±20 ms
Table 44. Communication logic for residual overcurrent (RESCPSCH) main settings
Parameter
Function
Value (Range)
Step
Scheme type
RESCPSCH
1 = None
2 = Intertrip
3 = Permissive Underreach
4 = Permissive Overreach
5 = Blocking
-
Carrier Min Dur
RESCPSCH
0...60000 ms
1
Coordination time
RESCPSCH
0...60000 ms
1
Table 45. Current reversal and weak-end infeed logic for residual overcurrent (RCRWPSCH)
Characteristic
Value
Operation accuracy
At the frequency f = f
n
±1.5% of the set value or ±0.002 × I
n
Operate time accuracy
±1.0% of the set value or ±20 ms
1MRS759144 A
REX640
Product version: 1
ABB
41
Summary of Contents for RELION REX640
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