Settings - ABB REG650 Technical Manual

Section 6
Differential protection
6.1.2.4
Table 24: T3WPDIF (87T) Group settings (basic)
Name Values (Range)
Operation Disabled
Enabled
IdMin 0.10 - 0.60
EndSection1 0.20 - 1.50
EndSection2 1.00 - 10.00
SlopeSection2 10.0 - 50.0
SlopeSection3 30.0 - 100.0
IdUnre 1.00 - 50.00
I2/I1Ratio 5.0 - 100.0
I5/I1Ratio 5.0 - 100.0
CrossBlockEn Disabled
Enabled
NegSeqDiffEn Disabled
Enabled
IMinNegSeq 0.02 - 0.20
NegSeqROA 30.0 - 90.0
SOTFMode Disabled
Enabled
IDiffAlarm 0.05 - 1.00
tAlarmDelay 0.000 - 60.000
Table 25: T3WPDIF (87T) Non group settings (basic)
Name Values (Range)
GlobalBaseSelW1 1 - 6
GlobalBaseSelW2 1 - 6
GlobalBaseSelW3 1 - 6
ConnectTypeW1 WYE (Y)
Delta (D)
Table continues on next page
80

Settings

Unit Step
- -
IB 0.01
IB 0.01
IB 0.01
% 0.1
% 0.1
IB 0.01
% 0.1
% 0.1
- -
- -
IB 0.01
Deg 0.1
- -
IB 0.01
s 0.001
Unit Step
- 1
- 1
- 1
- -
Default Description
Disabled Operation Disable / Enable
0.30 Section 1 sensitivity current, usually W1
current
1.25 End of section 1, multiple of W1 rated current
3.00 End of section 2, multiple of W1 rated current
40.0 Slope in section 2 of operate-restrain
characteristics
80.0 Slope in section 3 of operate-restrain
characteristics
10.00 Unrestrained protection limit, multiple of W1
rated current
15.0 Maximum ratio of 2nd harmonic to
fundamental harmonic differential current
25.0 Maximum ratio of 5th harmonic to
fundamental harmonic differential current
Enabled Operation Off/On for cross-block logic
between phases
Enabled Operation Off/On for negative sequence
differential function
0.04 Minimum negative sequence current
60.0 Operate angle for internal/external negative
sequence fault discriminator
Enabled Operation mode for switch onto fault function
0.20 Differential current alarm, multiple of base
current, usually W1 current
10.000 Time delay for differential current alarm
Default Description
1 Selection of one of the Global Base Value
groups, winding 1
1 Selection of one of the Global Base Value
groups, winding 2
1 Selection of one of the Global Base Value
groups, winding 3
WYE (Y) Connection type of winding 1: Y-wye or D-delta
1MRK 502 043-UUS B
Technical Manual