ABB RELION 620 Series Technical Manual page 211

1MAC504801-IB E
620 series ANSI
Technical Manual
maximum torque line
Characteristic angle = 0 deg
Min forward angle
Non-operating area
Max reverse angle
Min operate
current
GUID-829C6CEB-19F0-4730-AC98-C5528C35A297-ANSI V1 EN
Figure 89: Definition of the relay characteristic angle, RCA=0 degrees in a
compensated network
Example 2
The "Phase angle" mode is selected, solidly grounded network (φRCA = +60 deg)
=> Characteristic angle = +60 deg
-V (polarizing quantity)
I (operating quantity)
0
Max forward angle
Min reverse angle
Section 4
Protection functions
zero torque line
205