ABB Relion REC615 - Page 301

Figure 143: 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
1MRS758755 C
Protection functions
REC615 & RER615
Technical Manual
301