j
R1
RFPP
X1
X1
RFPP
R1
RFPP
RFPP
RFPP
RFPP
R
X
(Ohm/phase)
(Ohm/phase)
IEC11000428-1-en.vsd
j
0
1
3
X PE X RVPE
XNRV
-
=
0
1
3
X PE X FWPE
XNFW
-
=
0
1
3
X PG X FWPG
XNFW
-
=
0
1
3
X PG X RVPG
XNRV
-
=
0
1
3
X PE X RVPE
XNRV
-
=
0
1
3
X PE X FWPE
XNFW
-
=
2
2
2
2
2
2
IEC11000428 V1 EN
Figure 76:
Characteristic for phase-to-phase measuring
The fault loop reach with respect to each fault type may also be presented as in
figure
. Note in particular the difference in definition regarding the (fault) resistive
reach for phase-to-phase faults and three-phase faults.
1MRK505222-UUS C
Section 6
Impedance protection
177
Technical reference manual
Summary of Contents for Relion 670 series
Page 1: ...Relion 670 series Line differential protection RED670 ANSI Technical reference manual...
Page 2: ......
Page 40: ...34...
Page 50: ...44...
Page 60: ...54...
Page 126: ...120...
Page 384: ...378...
Page 496: ...490...
Page 556: ...550...
Page 602: ...596...
Page 620: ...614...
Page 794: ...788...
Page 864: ...858...
Page 988: ...982...
Page 998: ...992...
Page 1084: ...1078...
Page 1164: ...1158...
Page 1168: ...1162...
Page 1220: ...1214...
Page 1230: ...1224...
Page 1231: ...1225...