ABB REL650 - Settings; Operation Principle

PID-3581-OUTPUTSIGNALS v6
Table 265: ECPSCH Output signals
Name Type Description
TRIP BOOLEAN Trip signal by communication scheme logic
CS BOOLEAN Carrier Send by Communication Scheme Logic
CRL BOOLEAN Carrier Receive from Communication Scheme
Logic
LCG BOOLEAN loss of carrier guard signal
12.4.5 Settings
PID-3581-SETTINGS v6
Table 266: ECPSCH Group settings (basic)
Name Values (Range) Unit Step Default Description
Operation Off
On
- - Off Operation Off / On
SchemeType Off
Intertrip
Permissive UR
Permissive OR
Blocking
-
- Permissive UR Scheme type, Mode of Operation
tCoord 0.000 - 60.000 s 0.001 0.035 Communication scheme coordination
time
tSendMin 0.000 - 60.000 s 0.001 0.100 Minimum duration of a carrier send
signal
Table 267: ECPSCH Group settings (advanced)
Name
Values (Range) Unit Step Default Description
Unblock Off
NoRestart
Restart
-
- Off Operation mode of unblocking logic
tSecurity 0.000 - 60.000 s 0.001 0.035 Security timer for loss of carrier guard
detection
12.4.6 Operation principle
M13922-4 v5
The four step directional residual overcurrent protection EF4PTOC is configured to
give input information, that is directional fault detection signals, to the ECPSCH
logic:
1MRK 506 382-UEN A Section 12
Scheme communication
Line distance protection REL650 2.2 IEC 451
Technical manual