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Manual Operations
Motor-wound spring operating mechanism FK3-07
for outdoor circuit breaker
26.04.2011
© ALSTOM
• If the spring position indicator or the circuit breaker position indicator is in
an intermediate position, the motor-wound spring operating mechanism or
the circuit breaker has a defect.
• Before any manual operations are carried out, contact should be made with
the supplier's plant for diagnosis purposes and to clarify how to eliminate
malfunctions.
Spring position
indicator and circuit
breaker position
indicator in an
intermediate position
Possible position of position indicator
Spring position indicator
in intermediate position
The circuit breaker position indicator
in intermediate position
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