ABB Relion 670 Series Technical Reference Manual page 163

1MRK505222-UUS C
Name Values (Range)
RatVoltW1TraB 1.0 - 9999.9
RatVoltW2TraB 1.0 - 9999.9
ClockNumTransB 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 lag]
7 [210 deg lag]
8 [240 deg lag]
9 [270 deg lag]
10 [300 deg lag]
11 [330 deg lag]
ZerSeqPassTraB No
Yes
Table 79: LT6CPDIF (87LT) Group settings (basic)
Name Values (Range)
Operation Disabled
Enabled
IdMin 0.20 - 2.00
IdMinHigh 0.20 - 10.00
tIdMinHigh 0.000 - 60.000
IdUnre 1.00 - 50.00
NegSeqDiffEn Disabled
Enabled
NegSeqROA 30.0 - 120.0
IMinNegSeq 0.01 - 0.20
CrossBlockEn No
Yes
I2/I1Ratio 5.0 - 100.0
I5/I1Ratio 5.0 - 100.0
ChargCurEnable Disabled
Enabled
AddDelay Disabled
Enabled
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Technical reference manual
Unit Step Default
kV 0.1 130.0
kV 0.1 130.0
- - 0 [0 deg]
- - No
Unit Step Default
- - Disabled
IB 0.01 0.30
IB 0.01 0.80
s 0.001 1.000
IB 0.01 10.00
- - Enabled
Deg 1.0 60.0
IB 0.01 0.04
- - No
% 1.0 10.0
% 1.0 25.0
- - Disabled
- - Disabled
Differential protection
Description
Transformer B rated voltage (kV) on winding
1 (HV winding)
Transformer B rated voltage (kV) on winding
2 (LV winding)
Transf. B phase shift in multiples of 30 deg, 2
for 60 deg
Yes/No for capability of transf B to transform
zero seq curr
Description
Disable/Enable Operation
Oper - restr charact., section 1 sensitivity,
multiple IBase
Initial lower sensitivity, as multiple of IBase
Time interval of initial lower sensitivity, in sec
Unrestrained differential current limit, multiple
of IBase
Off/On selection for internal / external fault
discriminator
Internal/external fault discriminator Operate
Angle, degrees
Min. value of neg. seq. curr. as multiple of
IBase
Off/On selection of the cross -block logic
Max. ratio of second harmonic to fundamental
harm dif. curr. in %
Max. ratio of fifth harmonic to fundamental
harm dif. curr. in %
Off/On selection for compensation of
charging currents
On/Off selection for delayed diff. trip command
Section 5
157