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Manual Operations
Motor-wound spring operating mechanism FK3-07
for outdoor circuit breaker
26.04.2011
© ALSTOM
• Insert the blocking device of the tripping latch 71.56 up to the stop. The
blocking device of the tripping latch 71.56 is held in this position by the
snap-action device.
Illustration 12
Stop Snap-action device
• Undo the set screws of the protection plate 78.31. Secure the protection
plate78.28tothexingbar78.32usingtheremovedsetscrews,asshown
by illustration 13.
Illustration 13
78.32 78.31
78.32 Fixing bar
78.31 Set screws of protection plate
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