ABB REC670 Product Manual page 62

Bay control REC670
Pre-configured
Product version: 1.1
Table 52. Current reversal and weak-end infeed logic for distance protection
ZCRWPSCH
Function
Detection level phase-to-
neutral voltage
Detection level phase-to-
phase voltage
Reset ratio
Operate time for current
reversal logic
Delay time for current
reversal
Coordination time for
weak-end infeed logic
Table 53. Scheme communication logic for residual overcurrent protection ECPSCH
Function
Scheme type
Communication scheme
coordination time
Table 54. Current reversal and weak-end infeed logic for residual overcurrent protection
ECRWPSCH
Function
Operating mode of WEI
logic
Operate voltage 3U for
o
WEI trip
Reset ratio
Operate time for current
reversal logic
Delay time for current
reversal
Coordination time for
weak-end infeed logic
62
Range or value
(10-90)% of UBase
(10-90)% of UBase
<105%
(0.000-60.000) s
(0.000-60.000) s
(0.000-60.000) s
Range or value
Permissive Underreaching
Permissive Overreaching
Blocking
(0.000-60.000) s
Range or value
Off
Echo
Echo & Trip
(5-70)% of UBase
>95%
(0.000-60.000) s
(0.000-60.000) s
(0.000–60.000) s
1MRK 511 192-BEN B
Issued: June 2010
Accuracy
± 1.0% of U
r
± 1.0% of Ur
-
± 0.5% ± 10 ms
± 0.5% ± 10 ms
± 0.5% ± 10 ms
Accuracy
-
± 0.5% ± 10 ms
Accuracy
-
± 1.0% of U
r
-
± 0.5% ± 10 ms
± 0.5% ± 10 ms
± 0.5% ± 10 ms
ABB