ABB RELION REX640 Technical Manual page 1199

1MRS759142 C
REX640
Technical Manual
Max reverse
angle
Backward
area
Min Operate voltage
Min reverse
GUID-6D49F046-602A-47D7-B831-758781BACEA5 V1 EN
Figure 646: Configurable directional characteristics (RCA =+60˚) for a solidly
earthed network
RCA = -90 deg
Forward
area
Characteristic
Angle/ Max
I
0
Torque line
(operating quantity)
Min operate voltage
GUID-846F0475-3DFB-40BB-A9D7-F6FB547A377D V1 EN
Figure 647: Configurable directional characteristics (RCA = -90˚) for an isolated
network
Characteristic angle should be set to a positive value if the operating
signal lags the polarizing quantity -VG or -VN, respectively, and a
negative value if operating signal leads the polarizing quantity,
respectively.
Protection related functions
-U ( polarizing quantity)
0
RCA=+60 deg
Min forward
angle
Max forward
angle
angle
Zero torque line
Min operate current
-U ( polarizing quantity)
0
Max forward
Min reverse angle
angle
Min forward
Max reverse angle
angle
Min operate current
zero torque line
Section 5
Characteristic
Angle/ Max torque
line
I (operating quantity)
0
Forward
area
Backward
area
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