ABB Relion REC615, Техническое руководство

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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
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