RE: John Freau's SRSG motor controller question

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

Original poster: "Jeff W. Parisse by way of Terry Fritz <teslalist-at-qwest-dot-net>" <jparisse-at-teslacoil-dot-com>

Terry,

I start the 3/4hp motor on the 9J with the circuit engaged. The variac
growls but I don't see any heating effect and the start cycle is only
about 5 seconds. We're using 5 x 55uf caps and a W20 variac. We mounted
the phase control into our latest controller (24 kVA continuous!) and
have it calibrated so that the travel of the knob matches the phase
adjust (thanks Brian Basura). The new controller uses 3 x 1256Ds for
voltage and 4 x W50 for current and a W20 for the Phase adjust. It
weighs about 600 lbs. I'll upload photos in a few days.

Jeff



 > -----Original Message-----
 > From: Tesla list [mailto:tesla-at-pupman-dot-com]
 > Sent: Friday, May 30, 2003 11:43 AM
 > To: tesla-at-pupman-dot-com
 > Subject: John Freau's SRSG motor controller question
 >
 >
 > Original poster: "Terry Fritz" <teslalist-at-qwest-dot-net>
 >
 > Hi,
 >
 > I am working on a dwell controller of the John Freau design and I was
 > wondering if there is any problem with starting the motor
 > with the variac
 > in any random position?  I think I heard that it should be
 > started with the
 > variac in the minimum inductance stetting.
 >
 > Also, does the say 45 amp peak starting current hurt the variac?
 >
http://hot-streamer-dot-com/temp/030513-03.gif

Cheers,

	Terry