Re: My Pig (%imp)

• To: tesla-at-pupman-dot-com
• Subject: Re: My Pig (%imp)
• From: "mike" <mike-at-gmx-dot-com> (by way of Terry Fritz <terryf-at-verinet-dot-com>)
• Date: Sun, 04 Oct 1998 20:25:51 -0600
• Approved: terryf-at-verinet-dot-com

 Power companies also use the %imp figure to determine whether or not two
transformers can be connected in parallel safely. Paralleling is possible
if phasing is correct and the following conditions are met:

1: voltage ratings are identical
2: tap settings are identical
3: %imp of one is between 92.5% and 107.5% of the other
4: frequency ratings are identical

- Mike


> > What is the %imp figure used for??
> ...The %imp figures are used by
> the power companies to choose fuse ratings so that they will not blow
under
> full load, but will if a transformer is shorted.

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