ABB RED615 - Page 287

GUID-D72D678C-9C87-4830-BB85-FE00F5EA39C2 V2 EN
Figure 136: 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
1YHT530004D05 D Section 4
Protection functions
615 series 281
Technical Manual