Directional Overcurrent Characteristics - ABB RED615 Technical Manual

1YHT530004D05 D
4.1.3.6
615 series
Technical Manual
Table 193: Measurement modes supported by DPHxPDOC stages
Measurement mode
RMS
DFT
Peak-to-Peak

Directional overcurrent characteristics

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
counterclockwise sector and the Min forward angle setting gives the corresponding
clockwise sector, measured from the Characteristic angle setting.
In the backward operation area, the Max reverse angle setting gives the
counterclockwise sector and the Min reverse angle setting gives the corresponding
clockwise sector, a measurement from the Characteristic angle setting that has
been rotated 180 degrees.
Relay characteristic angle (RCA) is set positive if the operating current lags the
polarizing quantity and negative if the operating current leads the polarizing quantity.
Protection functions
Supported measurement modes
DPHLPDOC
x
x
x
Section 4
DPHHPDOC
x
x
x
183