polarizing quantity is in phase with the maximum torque line, RCA is 0 degrees. The
angle is positive if the operating current lags the polarizing quantity and negative if
it leads the polarizing quantity.
Example 1
The "Phase angle" mode is selected, compensated network (φRCA = 0 deg)
=>
Characteristic angle
= 0 deg
Figure 142: Definition of the relay characteristic angle, RCA=0 degrees in a
compensated network
Example 2
The "Phase angle" mode is selected, solidly earthed network (φRCA = +60 deg)
=>
Characteristic angle
= +60 deg
Protection functions
1MRS758755 C
300 REC615 & RER615
Technical Manual
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