ABB Relion 670 Series Technical Reference Manual page 489

Line differential protection ansi
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1MRK505222-UUS C
Technical reference manual
Magnitude
% of In
compensation
+10
IMagComp5
IMagComp30
IMagComp100
5
-10
Angle
Degrees
compensation
+10
IAngComp30
IAngComp5
IAngComp100
5
-10
ANSI05000652 V3 EN
Figure 244:
Calibration curves
The first current and voltage phase in the group signals will be used as reference and
the amplitude and angle compensation will be used for related input signals.
Analog outputs from the function can be used for service values or in the disturbance
report. The active power is provided as MW value: P, or in percent of base power:
PPERCENT. The reactive power is provided as Mvar value: Q, or in percent of base
power: QPERCENT.
30
0-5%:
Constant
5-30-100%: Linear
>100%:
Constant
30
Section 7
Current protection
Measured
current
100
% of In
Measured
current
100
% of In
ANSI05000652_3_en.vsd
483

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