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Manual Operations
Motor-wound spring operating mechanism FK3-07
for outdoor circuit breaker
26.04.2011
© ALSTOM
Slow switch-off
Illustration 28
71.63
71.63 Clamping bar
71.73 Bolt M10
70.02 Return stop
Check the operating
states of the circuit
breaker and the
motor-wound spring
operating mechanism
The motor-wound spring operating mechanism is ready for manual operations.
Position of position indicator
Spring position indicator closing spring
discharged or charged
The circuit breaker position
indicator is at the position ON,
and the trip spring is charged.
Return stop
stop
70.02
71.73
• Unscrew the M10 bolts 71.73 out of the clamping bar 71.63 of the return
stop 70.02 and remove the clamping bar 71.63.
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