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Manual operations
FK 3-1 / FK 3-06 motor-wound spring
operating mechanism
21.5.2003
© ALSTOM
48.020.181E/2
7/26
Operating mecha-
nism mounted on
circuit breaker and
coupled
• The following manual operations can be performed for inspection pur-
poses and to remedy problems:
Manual discharge
➁
➁➁
➁
of closing spring
➀
➀➀
➀
Slow
opening
Slow
closing
Slow
opening
Slow
closing
➃
➃➃
➃ ➂
➂➂
➂
If Action
Fig. ➀
➀➀
➀
Closing spring discharged,
circuit breaker position indi-
cator OPEN
• For inspection and ad-
justment
• Slowly close
Fig. ➁
➁➁
➁
Closing spring charged, circuit
breaker position indicator
OPEN
• For inspection and ad-
justment
• Circuit breaker must not
be closed
• Slowly close
• Manually discharge closing
spring
Fig. ➂
➂➂
➂
Closing spring discharged,
circuit breaker position indi-
cator CLOSED
• For inspection and ad-
justment
• Slowly open
Fig. ➃
➃➃
➃
Closing spring charged, circuit
breaker position indicator
CLOSED
• For inspection and ad-
justment
• Slowly open
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