ABB RET670 - Restricted Earth-Fault Protection, Low Impedance REFPDIF (87 N)

Name Values (Range) Unit Step Default Description
CT2RatingW1 1 - 99999 A 1 3000 CT primary in A, T-branch 2, on transf. W1 side
TconfigForW2 No
Yes
- - No Two CT inputs (T-config.) for winding 2, YES /
NO
CT1RatingW2 1 - 99999 A 1 3000 CT primary rating in A, T-branch 1, on transf.
W2 side
CT2RatingW2 1 - 99999 A 1 3000 CT primary rating in A, T-branch 2, on transf.
W2 side
TconfigForW3 No
Yes
- - No Two CT inputs (T-config.) for winding 3, YES /
NO
CT1RatingW3 1 - 99999 A 1 3000 CT primary rating in A, T-branch 1, on transf.
W3 side
CT2RatingW3 1 - 99999 A 1 3000 CT primary rating in A, T-branch 2, on transf.
W3 side
LocationOLTC1 Not Used
Winding 1 (W1)
Winding 2 (W2)
Winding 3 (W3)
- - Not Used Transformer winding where OLTC1 is located
LowTapPosOLTC1 0 - 10 - 1 1 OLTC1 lowest tap position designation (e.g. 1)
RatedTapOLTC1 1 - 100 - 1 6 OLTC1 rated tap/mid-tap position designation
(e.g. 6)
HighTapPsOLTC1 1 - 100 - 1 11 OLTC1 highest tap position designation (e.g.
11)
TapHighVoltTC1 1 - 100 - 1 1 OLTC1 end-tap position with winding highest
no-load voltage
StepSizeOLTC1 0.01 - 30.00 % 0.01 1.00 Voltage change per OLTC1 step in percent of
rated voltage
LocationOLTC2 Not Used
Winding 1 (W1)
Winding 2 (W2)
Winding 3 (W3)
- - Not Used Transformer winding where OLTC2 is located
LowTapPosOLTC2 0 - 10 - 1 1 OLTC2 lowest tap position designation (e.g. 1)
RatedTapOLTC2 1 - 100 - 1 6 OLTC2 rated tap/mid-tap position designation
(e.g. 6)
HighTapPsOLTC2 1 - 100 - 1 11 OLTC2 highest tap position designation (e.g.
11)
TapHighVoltTC2 1 - 100 - 1 1 OLTC2 end-tap position with winding highest
no-load voltage
StepSizeOLTC2 0.01 - 30.00 % 0.01 1.00 Voltage change per OLTC2 step in percent of
rated voltage
3.5.2 Restricted earth-fault protection, low impedance REFPDIF
(87N)
1MRK504116-UUS C Section 3
IED application
125
Application manual