ABB Relion 670 series - Setting parameters; Technical data; Current reversal and weak-end infeed logic for residual overcurrent protection ECRWPSCH (85)

13.5.5 Setting parameters
Table 437: ECPSCH (85) Group settings (basic)
Name Values (Range) Unit Step Default Description
Operation Disabled
Enabled
- - Disabled Disable/Enable Operation
SchemeType Disabled
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 channel coordination
time
tSendMin 0.000 - 60.000 s 0.001 0.100 Minimum duration of a carrier send signal
(carrier continuation)
Table 438: ECPSCH (85) Group settings (advanced)
Name Values (Range) Unit Step Default Description
Unblock Disabled
NoRestart
Restart
- - Disabled Operation mode of unblocking logic
tSecurity 0.000 - 60.000 s 0.001 0.035 Security timer for loss of carrier guard detection
13.5.6 Technical data
Table 439: ECPSCH (85) technical data
Function
Range or value Accuracy
Scheme type Permissive Underreaching
Permissive Overreaching
Blocking
-
Communication scheme
coordination time
(0.000-60.000) s ± 0.5% ± 10 ms
13.6 Current reversal and weak-end infeed logic for
residual overcurrent protection ECRWPSCH (85)
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Current reversal and weak-end infeed
logic for residual overcurrent protection
ECRWPSCH - 85
1MRK505222-UUS C Section 13
Scheme communication
817
Technical reference manual