Re: Run capacitors for PFC capacitors?

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

Original poster: "Hydrogen18" <hydrogen18-at-hydrogen18-dot-com> 

They cost $12 and will be undoubtedly useful for PFC as well as other things
so no worries.

I took apart a 3 phase 120 volt 21 amp line filter a while back. It had a
big powdered iron core with 7 turns of Litz wire(a bundle of 12x 18 guage)
around the core for each phase, all sharing the common core. It also had
some small capacitors with resistors(bleeder?) across them. Seems easy
enough to make a 240 VAC one, especially considering I still have the
core... I think a isolation transformer is the best solution personally.

---Eric
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Wednesday, March 31, 2004 6:41 PM
Subject: Re: Run capacitors for PFC capacitors?


 > Original poster: "John Richardson" <jprich-at-up-dot-net>
 >
 > Eric,
 >
 > They are used on NSTs not for current limiting, but for bringing the
voltage
 > and current phase together, to eliminate excessive amperage draw that may
 > blow the 15 or 20 amp breaker in the average 110 volt line these smaller
 > coils run off of.  They are not used for current limiting, just
correction.
 > Sorry if I wasn't clear on this.  I would assume that you would be using
 > some sort of an inductive ballast to keep current draw to sane levels, and
 > more than likely you will be installing a dedicated line to power your
 > project.  I suppose that all inductive loads could benefit from PFC, but
 > with a dedicated line and ballasting, it will be unnecessary.  If this
 > inductive load were running something 24/7, then maybe you would be easing
 > the pain on your electric bill a little, but for short duration TC use,
not
 > required.  Ed Wingate mentioned that the cost for running his maggie for
 > fifteen minutes was in the pennies, and it's a pretty large setup.  I
think
 > a better investment would be a huge line filter for your dedicated line,
as
 > this will help prevent feedback and outlets blasting out of the walls two
 > rooms away.  (Guess how I know!)
 >
 > Hope this helps.
 >
 > John Richardson
 >
 >
 > Subject: RE: Re: Re: Run capacitors for PFC capacitors?
 >
 >
 >  > Original poster: eric <hydrogen18-at-hydrogen18-dot-com>
 >  >
 >  > i wasnt aware they would offer current limiting unless connected in
 > series?
 >  > does this mean I can operate my 4 pack mot stack at the wire burning,
 >  > blinding current under an arc that their internal shunts limit them
too?
 >  > which is about 130uF according to wintesla, but i need to take input
 >  > measurements.
 >
 >
 >