Alstom SHPM 101 - Z1 EXT-Simplified Distance Scheme Logic

SERVICE MANUAL R5888B
QUADRAMHO Chapter 1
Appendix A
Page 4 of 8
Z
B
A
Zone -1 extended
Zone -2
Zone -3
Z
XX XX XX XX
Zone -2
Zone -3
Zone -1
Zone -1 extended
Zone -1
Auto-reclose reset
Zone-1 ext
Zone -1ext
OR
Auto-reclose reset
Zone-1 ext
Zone -2
Zone -3
tZ2
tZ3
Relay A
Trip A
Zone -1
Zone -2
Zone -3
Relay B
OR
AND
Zone -1
Zone -1ext
AND
OR
OR
tZ2
tZ3
Trip B
Figure 4: Z1 EXT-simplified distance scheme logic