Doble TDR900 User Guide
72A-2612-01 Rev. A 09/06
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4.5 Breaker Example
An example of an Oil Circuit Breaker is given here so as to identify salient features.
Other designs may have different components and arrangements.
4.6 Things That Can Go Wrong With a Breaker
Serious problems may include:
• Failure to operate
• Failure to interrupt arc
• Catastrophic failure
Less serious problems may include:
• Slow close
• Slow open
Bushings
Guide Assembly
Tank Liner
Contact Assembly
(Interrupter)
Lift Rod
Oil
Lift Rod Guide
Moving Contacts
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