ABB REG670 Technical Manual page 114

Section 6
Differential protection
Name
CrossBlockEn
NegSeqDiffEn
IMinNegSeq
NegSeqROA
Table 40: T2WPDIF Group settings (advanced)
Name
EndSection1
EndSection2
SlopeSection2
SlopeSection3
I2/I1Ratio
I5/I1Ratio
OpenCTEnable
tOCTAlarmDelay
tOCTResetDelay
tOCTUnrstDelay
Table 41: T2WPDIF Non group settings (basic)
Name
GlobalBaseSelW1
GlobalBaseSelW2
ConnectTypeW1
ConnectTypeW2
Table continues on next page
108
Values (Range) Unit
Off -
On
Off -
On
0.02 - 0.20 IB
30.0 - 120.0 Deg
Values (Range) Unit
0.20 - 1.50 IB
1.00 - 10.00 IB
10.0 - 50.0 %
30.0 - 100.0 %
5.0 - 100.0 %
5.0 - 100.0 %
Off -
On
0.100 - 10.000 s
0.100 - 10.000 s
0.10 - 6000.00 s
Values (Range) Unit
1 - 12 -
1 - 12 -
WYE (Y) -
Delta (D)
WYE (Y) -
Delta (D)
Step Default
- On
- On
0.01 0.04
0.1 60.0
Step Default
0.01 1.25
0.01 3.00
0.1 40.0
0.1 80.0
0.1 15.0
0.1 25.0
- Off
0.001 3.000
0.001 0.250
0.01 10.00
Step Default
1 1
1 1
- WYE (Y)
- WYE (Y)
1MRK502052-UEN B
Description
Operation Off/On for cross-block logic
between phases
Operation Off/On for neg. seq. differential
protections
Neg. seq. curr. must be higher than this
level to be used
Operate Angle for int. / ext. neg. seq. fault
discriminator
Description
End of section 1, multiple of Winding 1
rated current
End of section 2, multiple of Winding 1
rated current
Slope in section 2 of operate-restrain
characteristic, in %
Slope in section 3 of operate-restrain
characteristic, in %
Max. ratio of 2nd harm. to fundamental
harm dif. curr. in %
Max. ratio of 5th harm. to fundamental
harm dif. curr. in %
Open CT detection feature. Open
CTEnable Off/On
Open CT: time in s to alarm after an open
CT is detected
Reset delay in s. After delay, diff. function
is activated
Unrestrained diff. protection blocked after
this delay, in s
Description
Global base selector for winding 1
Global base selector for winding 2
Connection type of winding 1: Y-wye or D-
delta
Connection type of winding 2: Y-wye or D-
delta
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