ABB Relion 670 series Product Manual page 58

Line distance protection REL670 ANSI
Pre-configured
Product version: 1.2
Scheme communication
Table 47. Scheme communication logic for distance or overcurrent protection ZCPSCH (85)
Function
Scheme type
Co-ordination time for blocking
communication scheme
Minimum duration of a send signal
Security timer for loss of guard
signal detection
Operation mode of unblocking logic
Table 48. Current reversal and weak-end infeed logic for distance protection ZCRWPSCH (85)
Function
Detection pickup phase-to-
neutral voltage
Detection pickup phase-to-phase
voltage
Reset ratio
Operate time for current reversal
logic
Delay time for current reversal
Coordination time for weak-end
infeed logic
58
Range or value
Intertrip
Permissive Underreach
Permissive Overreach
Blocking
(0.000-60.000) s
(0.000-60.000) s
(0.000-60.000) s
Disabled
NoRestart
Restart
Range or value
(10-90)% of VBase
(10-90)% of VBase
<105%
(0.000-60.000) s
(0.000-60.000) s
(0.000-60.000) s
1MRK 506 317-BUS A
Accuracy
-
± 0.5% ± 10 ms
± 0.5% ± 10 ms
± 0.5% ± 10 ms
-
Accuracy
± 0.5% of Vn
± 0.5% of Vn
-
± 0.5% ± 10 ms
± 0.5% ± 10 ms
± 0.5% ± 10 ms
ABB