ABB RELION 620 Series Technical Manual page 385

1MRS757644 F
620 series
Technical Manual
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
GUID-829C6CEB-19F0-4730-AC98-C5528C35A297 V2 EN
Figure 180: 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
Section 4
Protection functions
379