ABB Relion 670 Series Technical Reference Manual page 823

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