RE: Variable phase adj. cap size

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

Original poster: "brianb by way of Terry Fritz <twftesla-at-qwest-dot-net>" <brianb-at-antelecom-dot-net>

Greg,

Use caution on these larger motors by slowly working up to the proper cap
size (and measuring the voltage swing as John describes). If you place too
big a cap in the circuit there will be significant self braking of the motor
when the power is removed. This braking action is powerful enough to shear
off set screws and/or break the motor shaft.

Regards,
Brian B.

-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Sunday, June 23, 2002 9:25 PM
To: tesla-at-pupman-dot-com
Subject: Variable phase adj. cap size


Original poster: "Mr Gregory Peters by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <s371034-at-student.uq.edu.au>

Hello all,

My SRSG motor is a 3000 RPM, 1HP, 240v unit. Does anyone have any idea
what cap size I need to make John's variable phase controller? What
size caps have others used on similar spec motors?

Cheers,

Greg Peters
Department of Earth Sciences,
University of Queensland, Australia
Phone: 0402 841 677
http://www.geocities-dot-com/gregjpeters