Re: 3 Phase Transformer as Saturable Reactor

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

Original poster: "Chip Atkinson by way of Terry Fritz <teslalist-at-qwest-dot-net>" <chip-at-pupman-dot-com>

Ok.  I'll do that.

Chip

On Sun, 5 Jan 2003, Jack King wrote:

 > Hi CHip,
 >
 > I was hoping you would/could post this on the list.
 > It's been a while since I had posted and due to
 > limited email space, I stay unsubscribed and peruse
 > the archives...Your help would be greatly appreciated.
 >
 > The rectifier was for dc injection back into the the
 > middle winding...
 >
 >
 > Thanks,
 >
 > Jack
 >
 > --- Chip Atkinson <chip-at-pupman-dot-com> wrote:
 > > That's really weird sounding.  Did you ask people on
 > > the list what they
 > > know?  What was the reason for the rectifier?
 > > Chip
 > >
 > > On Sat, 4 Jan 2003, Jack King wrote:
 > >
 > > > Greetings Chip and Crew,
 > > >
 > > > I have an observation and question;
 > > >
 > > > I have been toying with the idea of using a 5 KVA
 > > 3
 > > > phase transformer as an SR.
 > > >
 > > > Today I hooked it up. The two outer winding stacks
 > > pri
 > > > and sec were 1st wired in paralelled, then those 2
 > > > outer parallelled stacks, were then wired again in
 > > > parallel, 180 degrees out of phase respectively.
 > > This
 > > > throttled a 10 KVA pig down to an appx HV current
 > > of
 > > > 50 MA.
 > > >
 > > > ...Here's were (bad) sparks commenced. I connected
 > > a
 > > > full wave bridge DC out accross the center coil.
 > > POOF!
 > > > blew out the rectifier. I tried again, wiring the
 > > pri
 > > > and sec of the center stack in series, dug out
 > > another
 > > > FW bridge....more POOF!, blew up my little 4 amp
 > > 240
 > > > volt variac.
 > > >
 > > > Thinking I may have stray induced voltage back
 > > through
 > > > my control winding, I coonected a 150 watt lamp
 > > across
 > > > the windings....No illumination.
 > > >
 > > > WHat gives" is the impedance of my "control
 > > winding
 > > > too low??? guesses anyone???
 > > >
 > > > I would sure like to make this work . as the $7.00
 > > for
 > > > this transformer sure beats the $500-$5,000 asking
 > > > price of an SR.
 > > >
 > > > Cheers,
 > > >
 > > > Jack King
 > > >