ABB RET650 Technical Manual page 88

Section 6
Differential protection
Name
IdUnre
I2/I1Ratio
I5/I1Ratio
CrossBlockEn
NegSeqDiffEn
IMinNegSeq
NegSeqROA
SOTFMode
IDiffAlarm
tAlarmDelay
Table 27: T2WPDIF Non group settings (basic)
Name
GlobalBaseSelW1
GlobalBaseSelW2
ConnectTypeW1
ConnectTypeW2
ClockNumberW2
ZSCurrSubtrW1
ZSCurrSubtrW2
82
Values (Range) Unit
1.00 - 50.00 IB
5.0 - 100.0 %
5.0 - 100.0 %
Off -
On
Off -
On
0.02 - 0.20 IB
30.0 - 90.0 Deg
Off -
On
0.05 - 1.00 IB
0.000 - 60.000 s
Values (Range) Unit
1 - 6 -
1 - 6 -
WYE (Y) -
Delta (D)
WYE (Y) -
Delta (D)
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]
Off -
On
Off -
On
Step Default
0.01 10.00
0.1 15.0
0.1 25.0
- On
- On
0.01 0.04
0.1 60.0
- On
0.01 0.20
0.001 10.000
Step Default
1 1
1 1
- WYE (Y)
- WYE (Y)
- 0 [0 deg]
- On
- On
1MRK 504 135-UEN A
Description
Unrestrained protection limit, multiple of
W1 rated current
Maximum ratio of 2nd harmonic to
fundamental harmonic differential current
Maximum ratio of 5th harmonic to
fundamental harmonic differential current
Operation Off/On for cross-block logic
between phases
Operation Off/On for negative sequence
differential protections
Minimum negative sequence current
Operate angle for internal/external
negative sequence fault discriminator
Operation mode for switch onto fault
Differential curreent alarm, multiple of
base current, usually W1 current
Time delay for differential current alarm
Description
Selection of one of the Global Base Value
groups, winding 1
Selection of one of the Global Base Value
groups, winding 2
Connection type of winding 1: Y-wye or D-
delta
Connection type of winding 2: Y-wye or D-
delta
Phase displacement between W2 &
W1=HV winding, hour notation
Enable zero sequence subtration for W1
side, Off/On
Enable zero sequence subtration for W2
side, Off/On
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