Alstom SF6 - Finishing Work

H48.020.249en/2
46/51
Manual Operations
Motor-wound spring operating mechanism FK3-07
for outdoor circuit breaker
26.04.2011
© ALSTOM
Finishing work after ending manual operations
• Beforecarryingoutthenishingwork,makesurethecircuitbreakerisat
the position OFF.
• If the circuit breaker is at the position ON, proceed according to "Slow
switch-off".
Check the position
is OFF on the
circuit breaker
• If the motor-wound spring operating mechanism is equipped with an
undervoltage release, unblock the undervoltage release.
Unblock the
undervoltage
release
Illustration 52
Blocking lever in blocking position
Illustration 53
Blocking lever in operating position