ABB ret650 - Settings

6.1.3.4 Settings
Table 31: T3WPDIF Group settings (basic)
Name
Values (Range) Unit Step Default Description
Operation Off
On
- - Off Operation Off / On
IdMin 0.10 - 0.60 IB 0.01 0.30 Section 1 sensitivity current, usually W1
current
EndSection1 0.20 - 1.50 IB 0.01 1.25 End of section 1, multiple of W1 rated
current
EndSection2 1.00 - 10.00 IB 0.01 3.00 End of section 2, multiple of W1 rated
current
SlopeSection2 10.0 - 50.0 % 0.1 40.0 Slope in section 2 of operate-restrain
characteristics
SlopeSection3 30.0 - 100.0 % 0.1 80.0 Slope in section 3 of operate-restrain
characteristics
IdUnre 1.00 - 50.00 IB 0.01 10.00 Unrestrained protection limit, multiple of
W1 rated current
I2/I1Ratio 5.0 - 100.0 % 0.1 15.0 Maximum ratio of 2nd harmonic to
fundamental harmonic differential current
I5/I1Ratio 5.0 - 100.0 % 0.1 25.0 Maximum ratio of 5th harmonic to
fundamental harmonic differential current
CrossBlockEn Off
On
- - On Operation Off/On for cross-block logic
between phases
NegSeqDiffEn Off
On
- - On Operation Off/On for negative sequence
differential function
IMinNegSeq 0.02 - 0.20 IB 0.01 0.04 Minimum negative sequence current
NegSeqROA 30.0 - 90.0 Deg 0.1 60.0 Operate angle for internal/external
negative sequence fault discriminator
SOTFMode Off
On
- - On Operation mode for switch onto fault
function
IDiffAlarm 0.05 - 1.00 IB 0.01 0.20 Differential current alarm, multiple of base
current, usually W1 current
tAlarmDelay 0.000 - 60.000 s 0.001 10.000 Time delay for differential current alarm
Table 32: T3WPDIF Non group settings (basic)
Name
Values (Range) Unit Step Default Description
GlobalBaseSelW1 1 - 6 - 1 1 Selection of one of the Global Base Value
groups, winding 1
GlobalBaseSelW2 1 - 6 - 1 1 Selection of one of the Global Base Value
groups, winding 2
GlobalBaseSelW3 1 - 6 - 1 1 Selection of one of the Global Base Value
groups, winding 3
ConnectTypeW1 WYE (Y)
Delta (D)
- - WYE (Y) Connection type of winding 1: Y-wye or D-
delta
ConnectTypeW2 WYE (Y)
Delta (D)
- - WYE (Y) Connection type of winding 2: Y-wye or D-
delta
Table continues on next page
1MRK 504 135-UEN A Section 6
Differential protection
85
Technical manual