ABB REL650 Applications Manual page 150

Section 6
Impedance protection
144
1
6
2
60°
8
6
4
3
IEC09000257 V1 EN
Figure 68: Relation between distance protection (ZQMPDIS) (21) and FDPSPDIS
(21) characteristic for phase-to-phase fault for φline>60° (setting
parameters in italic)
1 FDPSPDIS (21)(red line)
2 ZQMPDIS(21)
3 0.5 ·
4
X1
PHS
( )
tan
°
60
5 0.5 ·
RFPP
6 0.5 ·
Zm
X1
7
PHS
X W
( / phase)
3
4
6
6 6
6
5
1MRK 506 334-UUS A
5
7
60°
8
R
W
( / phase)
7
IEC09000257_1_en.vsd
Application manual