65A7355H01 November 2011 www.eaton.com
43
4.8
Troubleshooting Chart
Symptom
Inspection area
Probable cause
Fail to Close
Closing-spring
not charged
Motor Circuit
● No control power
(
fuse blown or switch off
)
● Secondary disconnect is not connected
● Motor cut-off switch or its push lever is damaged
● Loose wire terminal connections
● Motor failure
Closing-spring
charged but breaker
does not close
Shunt Closing Release circuit,
when the plunger of the shunt
does not pick up
● No control power, or its out of voltage range
(
fuse blown or switch off, or wrong voltage applied)
● Secondary disconnects is not in service
● Anti-pumping device is in service
● Shunt closing release failure
● The breaker is between service and test position
when it is in the switchgear
Mechanical Interlock, may
override the plunger of the shunt
close release may pick up
● The breaker is between service and test position
when it is in the switchgear
Closing spring is released, but
the breaker fails to close.
● Trip circuit is energized (trip free)
● Trip latch does not reset
Breaker does not
close when manually
pushing the close
button
Electromechanical Interlock
Secondary Disconnect is not pluged in or has no
control power to it
Breaker does not
rack in
Electromechanical Interlock
Check to see if proper secondary control voltage
is applied to the interlock
Содержание W-VACi
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Страница 55: ...65A7355H01 November 2011 www eaton com 55 Fig 6 11 Control Schematic...
Страница 56: ...56 65A7355H01 November 2011 www eaton com Fig 6 12 Control Schematic...
Страница 57: ...65A7355H01 November 2011 www eaton com 57 Fig 6 13 Control Schematic...
Страница 58: ...58 65A7355H01 November 2011 www eaton com Fig 6 14 Control Schematic...
Страница 59: ...65A7355H01 November 2011 www eaton com 59 Fig 6 15 Control Schematic...
Страница 60: ...60 65A7355H01 November 2011 www eaton com Fig 6 16 Control Schematic...
Страница 61: ...65A7355H01 November 2011 www eaton com 61 Fig 6 17 Control Schematic...
Страница 62: ...62 65A7355H01 November 2011 www eaton com Fig 6 18 Control Schematic...
Страница 63: ...65A7355H01 November 2011 www eaton com 63 Fig 6 19 Control Schematic...