ABB Relion 670 series - Page 48

Setting IED 1 IED 2 Description
TraBWind1Volt 220 kV 220 kV Transformer B: Y-side
voltage
TraBWind2Volt 70 kV 70 kV Transformer B: d-side voltage
ClockNumTransB 1 1 LV d-side lags Y-side by 30
degrees
ZerSeqCurSubtr On On Zero-sequence currents are
subtracted from differential
and bias currents (note 3)
Table 2: Setting group N
Setting IED 1 IED 2 Description
ChargCurEnable Off Off Charging current not
eliminated (default)
IdMin 0.35 · IBase 0.35 · IBase Sensitivity in Section 1
of the operate-restrain
characteristic
EndSection1
1.25 · IBase 1.25 · IBase End of section 1 of the
operate-restrain
characteristic
EndSection2
3.00 · IBase 3.00 · IBase End of section 2 of the
operate-restrain
characteristic
SlopeSection2
40% 40% Slope of the operate-
restrain characteristic in
Section 2
SlopeSection3
80% 80% Slope of the operate-
restrain characteristic in
Section 3
IdMinHigh
2.00 · IBase 2.00 · IBase Temporarily decreased
sensitivity used when
the protected circuit is
connected to a power
source (note 4)
IntervIdMinHig
30.000 s 30.000 s Time interval when
IdMinHig is active (note
5)
Idunre
5.50 · IBase 5.50 · IBase Unrestrained operate
(differential) current
limit (note 6)
CrossBlock
1 1 CrossBlock logic
scheme applied (note
7)
I2/I1Ratio
15% 15% Second to fundamental
harmonic ratio limit
I5/I1Ratio 25% 25% Fifth to fundamental
harmonic ratio limit
NegSeqDiff On On Internal/external fault
discriminator enabled
(default)
Table continues on next page
Section 4 1MRK 505 382-UEN B
Analog and binary signal transfer for line differential protection
42 Communication set-up 670/650 series 2.2
Application Guide