ABB REL 561*2.5 Operator's Manual page 68


Read the measured and calculated
function values
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IDiffL1=
0.003 A
IBiasL1=
0.734 A
IDiffL2=
0.004 A
IBiasL2=
0.733 A
IDiffL3=
0.002 A
IBiasL3=
0.735 A
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This procedure describes how to read differential communication values.
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Measured actual value of differential current in
phase L1
The highest value of Bias currents in phase L1
or 1/2 of Bias current in L2 or 1/2 of Bias current
in L3
max [(I L1 or 0,5xI L2 or 0,5I
bias bias
Measured actual value of differential current in
phase L2
The highest value of Bias currents in phase L2
or 1/2 of Bias current in L1 or 1/2 of Bias current
in L3
max [(I L2 or 0,5xI L1 or 0,5I
bias bias
Measured actual value of differential current in
phase L3
The highest value of Bias currents in phase L3
or 1/2 of Bias current in L2 or 1/2 of Bias current
in L1
max [(I L3 or 0,5xI L2 or 0,5I
bias bias
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L3)]
bias
L3)]
bias
L1)]
bias
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