ABB Relion 670 series - Page 183

j
R1
RFPP
X1
X1
RFPPR1
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 77. 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