ABB Relion 650 Series Technical Manual page 349

1MRK 506 326-UUS B
11.1.6.5 Intertrip scheme
In the direct intertrip scheme, the send signal CS is sent from an underreaching zone that is
tripping the line.
The received signal CR is directly transferred to a TRIP for tripping without local criteria. The signal
is further processed in the tripping logic.
11.1.7 Technical data
Table 276: ZCPSCH (85) technical data
Function
Scheme type
Co-ordination time for blocking
communication scheme
Minimum duration of a carrier
send signal
Security timer for loss of guard
signal detection
Operation mode of unblocking
logic
11.2 Current reversal and weak-end infeed logic for distance
protection ZCWSPSCH (85)
11.2.1 Identification
Function description
Current reversal and weak-end
infeed logic for distance protection
Line distance protection REL650
Technical manual
It sends a defined (150 ms) CRL after the disappearance of the CR_GUARD
signal
The function will activate LCG output in case of communication failure
If the communication failure comes and goes (<200 ms) there will not be
recurrent signalling
Range or value
Disabled
Intertrip
Permissive UR
Permissive OR
Blocking
(0.000-60.000) s
(0.000-60.000) s
(0.000-60.000) s
Disabled
NoRestart
Restart
IEC 61850
identification
ZCWSPSCH
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Accuracy
-
± 0.5% ± 10 ms
± 0.5% ± 10 ms
± 0.5% ± 10 ms
-
IEC 60617 ANSI/IEEE C37.2
identification device number
- 85
Section 11
Scheme communication
M13893-36 v2
M16038-1 v6
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