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Manual Operations
Motor-wound spring operating mechanism FK3-07
for outdoor circuit breaker
26.04.2011
© ALSTOM
Illustration 14
71.66 71.67
71.66 Rivet nut M6
71.67 Centering device
71.68 Set screw M6
71.69 Centering bore
Remove the slow
device
71.68 71.69
• Align the centering device 71.67 and the set screws 71.68 of the slow-
movement device with the appropriate holes in the operating mechanism
housing. The exact positions of the centering device 71.67 and the set
screws 71.68 are obtained by rotating the operating shaft 71.70. Insert the
centering device 71.67 into the centering bore 71.70 and tighten the set
screws 71.68 to a torque of 9.6 Nm.
Illustration 15
71.70
71.70 Operating shaft
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