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Manual Operations
Motor-wound spring operating mechanism FK3-07
for outdoor circuit breaker
26.04.2011
© ALSTOM
Illustration 37
71.70 Operating shaft 70.30 Crank wheel
71.78 Toothed segment 71.79 Pinion of slow movement device
• Rotate the operating shaft 71.70
counterclockwise using a hand-
held tool with jaw width 6 and the
crank wheel 70.30 will also rotate
counterclockwise.
• Further rotate the operating shaft
71.70 counterclockwise using a
hand-held tool with jaw width 6
until the toothed segment 71.78 is
between the pinions 71.79 of the
slow movement device 70.72.
71.70 70.30
Illustration 38
71.78 71.79
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