Table 1: General settings
Setting IED 1 IED 2 Description
Operation On On Operation Mode (active)
NoOfTerminals 3 3 Number of current sources/
circuit ends
IBase (Global base) 600 A 600 A Reference current of the
protection in the primary
system (note 1)
IBase is set in the Global
base values function
(GBASVAL).
TransfAonInpCh 2 1 Input currents on the input
channels are referred to the
high voltage side (note 2)
TraAWind1Volt 220 kV 220 kV Transformer A: Y-side voltage
TraAWind2Volt 70 kV 70 kV Transformer A: d-side voltage
ClockNumTransA 1 1 LV d-side lags Y-side by 30
degrees
TransfBonInpCh 3 2 Input currents on the input
channels are referred to the
high voltage side (note 2)
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)
Table continues on next page
Section 4 1MRK505382-UEN Rev. K
Analog and binary signal transfer for line differential protection
34 Communication set-up, 670/650 series
Application Guide
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