Re: Variable phase adj. cap size

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

Original poster: "Steve White by way of Terry Fritz <twftesla-at-qwest-dot-net>" <slwhite-at-zeus.ia-dot-net>

I have eliminated that problem in my circuit by using a relay to remove the
caps from the motor circuit when I switch off the motor power.

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Monday, June 24, 2002 7:08 AM
Subject: RE: Variable phase adj. cap size


> 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
>
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