ABB Relion REG670, Technical Manual

Page: 115 / 1298

Name Values (Range) Unit Step Default Description
ClockNumberW2 0 [0 deg]
1 [30 deg lag]
2 [60 deg lag]
3 [90 deg lag]
4 [120 deg lag]
5 [150 deg lag]
6 [180 deg]
7 [150 deg lead]
8 [120 deg lead]
9 [90 deg lead]
10 [60 deg lead]
11 [30 deg lead]
- - 0 [0 deg] Phase displacement between W2 &
W1=HV winding, hour notation
ZSCurrSubtrW1 Off
On
- - On Enable zer. seq. current subtraction for
W1 side, On / Off
ZSCurrSubtrW2 Off
On
- - On Enable zer. seq. current subtraction for
W2 side, On / Off
TconfigForW1 No
Yes
- - No Two CT inputs (T-config.) for winding 1,
YES / NO
CT1RatingW1 1 - 99999 A 1 3000 CT primary rating in A, T-branch 1, on
transf. W1 side
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
LocationOLTC1 Not Used
Winding 1 (W1)
Winding 2 (W2)
- - 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
Table 42: T3WPDIF Group settings (basic)
Name Values (Range) Unit Step Default Description
tAlarmDelay 0.000 - 60.000 s 0.001 10.000 Time delay for diff currents alarm level
Operation Off
On
- - Off Operation Off / On
IDiffAlarm 0.05 - 1.00 IB 0.01 0.20 Dif. cur. alarm, multiple of base curr,
usually W1 curr.
Table continues on next page
1MRK502052-UEN B
Section 6
Differential protection
109
Technical manual