ABB Relion 670 Series REL670 - Page 111

ArgDir
R
X
RFFwPE
1
3
)1( XNX +
5
2
4
ArgNegRes
85%
ArgLd
50% of RLdFw
6
IEC09000734-3-en.vsd
( / )loopW
( / )loopW
7
60°
IEC09000734 V3 EN
Figure 22: Operating characteristic for phase selection function, forward
direction single-phase faults
X1
R
X
85%
1
3
5
2
6
4
50% RLdFw
ArgNegRes
0.5·RFFwPP
ArgLd
IEC09000735-3-en.vsd
ArgDir
60°
)/( phaseW
)/( phaseW
7
IEC09000735 V3 EN
Figure 23: Operating characteristic for phase selection function, forward
direction phase-to-phase faults
1MRK 506 355-UEN A Section 10
Testing functionality by secondary injection
Line distance protection REL670 2.1 IEC 105
Commissioning manual