ABB Remote I/O RIO600 Installation And Commissioning Manual page 114

Section 6
Commissioning
106
If the "Phase angle" mode is selected, the solidly earthed network (ϕ
Characteristic angle = +60°.
Min operate
current
Max reverse angle
Backward operating zone
Min reverse angle
GUID-F4486C5A-7AD2-416D-865D-A0E03E4418B2 V1 EN
Figure 60: Definition of the relay characteristic angle, RCA = +60° in a solidly
earthed network
Example 3
If the "Phase angle" mode is selected, the solidly earthed network (ϕ
Characteristic angle = -90°.
-Uo (Polarizing quantity)
Characteristic angle
= +60°
Min forward angle
Io (Operating quantity)
Max forward angle
Forward operating zone
Zero torque line
Installation and Commissioning Manual
1MRS757488 H
= +60°) and
RCA
Maximum torque line
= -90°) and
RCA
RIO600