ABB REF615 - Page 154

GUID-F3A658D8-B667-4E85-9528-E1D024954B32 V1 EN
Figure 70: 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 5 1MRS756378 D
Protection functions
148 REF615
Application Manual