ABB RELION Series Technical Manual page 293

1MRS758755 A
REC615 and RER615
Technical Manual
GUID-D72D678C-9C87-4830-BB85-FE00F5EA39C2 V2 EN
Figure 144: Definition of the relay characteristic angle, RCA=+60 degrees in a
solidly earthed network
Example 3
The "Phase angle" mode is selected, isolated network (φRCA = -90 deg)
=> Characteristic angle = -90 deg
Section 4
Protection functions
287