ABB Relion 650 Series Technical Manual page 362

Section 11
Scheme communication
The unblocking function can be set in three operation modes (setting
Disabled:
No restart:
Restart
11.4.7 Technical data
Table 291: ECPSCH (85) technical data
Function
Scheme type
Communication scheme
coordination time
Minimum duration of a send
signal
Security timer for loss of
carrier guard detection
11.5 Current reversal and weak-end infeed logic for residual
overcurrent protection ECRWPSCH (85)
11.5.1 Identification
Function description
Current reversal and weak-end
infeed logic for residual overcurrent
protection
356
The unblocking function is out of operation
Communication failure shorter than
If CR_GUARD disappears, a CRL signal will be transferred to the trip logic
There will not be any information in case of communication failure (LCG)
Communication failure shorter than
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 signaling
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
IEC 61850
identification
ECRWPSCH
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tSecurity will be ignored
tSecurity will be ignored
Accuracy
-
± 0.5% ± 25 ms
± 0.5% ± 25 ms
± 0.5% ± 25 ms
IEC 60617 ANSI/IEEE C37.2
identification device number
- 85
1MRK 506 326-UUS B
Unblock ):
M16049-1 v6
IP14365-1 v4
M14883-1 v2
Line distance protection REL650
Technical manual