Alstom SHPM 101 - Block Auto-Reclose Logic

SERVICE MANUAL R5888C
QUADRAMHO Chapter 2
Appendix A
Page 64 of 71
Figure 73: Block auto-reclose logic
SW4
1
0.1ms
0
&
BAR Output
96–1
Z
1
A'
Voltage Det. LDOV
A
P.U.R. P.O.R. or block scheme
1
0
100ms
1
&
&
&
&
Z
1
B'
Z
1
C'
Aided trip A Aided trip B Aided trip C Z2t
Z3t S.O.T.F.
Weak infeed trip
Voltage Det. LDOV
B
Voltage Det. LDOV
C
C.I.S.
0V
Q
R
S
0
SW6