The forward and reverse sectors are defined separately. The forward operation area
is limited with the
Min forward angle
and
Max forward angle
settings. The reverse
operation area is limited with the
Min reverse angle
and
Max reverse angle
settings.
The sector limits are always given as positive degree values.
In the forward operation area, the
Max forward angle
setting gives the clockwise
sector and the
Min forward angle
setting correspondingly the counterclockwise
sector, measured from the
Characteristic angle
setting.
In the reverse operation area, the
Max reverse angle
setting gives the clockwise
sector and the
Min reverse angle
setting correspondingly the counterclockwise
sector, measured from the complement of the
Characteristic angle
setting (180
degrees phase shift) .
The relay characteristic angle (RCA) is set to positive if the operating current lags
the polarizing quantity. It is set to negative if it leads the polarizing quantity.
Figure 148: Configurable operating sectors in phase angle characteristic
1MRS758755 C
Protection functions
REC615 & RER615
Technical Manual
309
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