Hitachi Relion 670 Series Applications Manual page 234

Section 15
Logic
If the comparison should be done between two current magnitudes then those current signals need to be
connected to function inputs, INPUT and REF. Then the settings should be adjusted as below,
EnaAbs = Absolute
RefSource = Input REF
EqualBandHigh = 5.0 % of reference value
EqualBandLow = 5.0 % of reference value.
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1MRK511407-UUS Rev. N
Phasor measurement unit RES670
Application manual