Re: Calculation of PFC Capacitors using LTR Capacitor

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <FutureT-at-aol-dot-com>

In a message dated 8/3/02 12:53:21 AM Eastern Daylight Time, tesla-at-pupman-dot-com
writes:

Bart,

Important reasons to use PFC are to prevent line fuses/breakers
from blowing due to the heavy current draw from larger coils, and to
reduce the stresses and losses in the input wiring, switches, etc.

For a large coil, it's very possible that not enough power will be
available at a particular location, unless PFC is used.  This is
especially true if the PF of the coil is poor.  

Cheers,
John


>
> The funny thing about all this PFC business is that the transformer and
> coil still use the same
> amount of real power regardless of PFC use. It's  really only important to
> everything upstream
> from the transformer and the current we read on the meter. This to me is
> one of those areas I
> still don't quite understand why we worry about it so much. Yes,
> transformers cause reactive
> power, but, I see little use of a PFC (except to identify how much real
> power is entertaining
> us). Just my opinion.
>
> Take care,
> Bart