MOTOR RUN VS. MOTOR START

From: Davison, Lee <Lee.Davison_at_merlincommunications.com>
Date: Thu Dec 4 14:50:42 2003

> We used to have to put "motor run" capacitors on all our
> large equipment (3 phase) to get our power factor closer
> to one (unity). However, this system is a single phase
> system. I don't think the same issue is being addressed
> by the run capacitor.
  
It is, like the capacitor in flourescent light fittings the
run capacitor on a motor is (usually) just for power factor
correction and it matters not if it's 3 phase or single. The
give away is if it's across the supply or in series with a
separate winding. If it's across the supply then it's for PFC.

Lee.


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Received on Thu Dec 04 2003 - 14:50:42 GMT

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