Alstom SHPM 101 - Volatge Transformer Supervision and Miniature Circuit Breaker

SERVICE MANUAL R5888C
QUADRAMHO Chapter 2
Appendix A
Page 54 of 71
Figure 63: Voltage transformer supervision and miniature circuit breaker
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15ms
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240ms
20ms
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55.5
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MINIATURE CIRCUIT BREAKER OPEN ALL POLES DEAD V.I.S. VOLTAGE
DETECTOR LDVO CURRENT DETECTOR LDLS
N
ANY Z1,Z2 OR Z3 COMPARATOR
ANY POLE DEAD RESET
V.T.S BLOCK V.T.S BLOCK
W.I.
COMP.
RELAY (97Y-1) INOPERATIVE
V.T.S IND
(97X-1)