Re: Pig Question

[FutureT-at-aol-dot-com (by way of Terry Fritz <twftesla-at-uswest-dot-net>)]

In a message dated 8/2/00 5:47:29 PM Pacific Daylight Time, tesla-at-pupman-dot-com 
writes:

> > Also when wiring the these transformers in series, do you just connect the
>  > ground (the case) together and draw the HV off each bushing?
>  
>  If all you have is single-bushing transformers, that would be the only way
>  to do it, BUT: then one of the transformers will have its case floating at
>  7500 VAC!  Are you sure that's what you want?  Even if you isolated the 
case
>  on an insulating base, the low voltage bushings are not rated for 7.5kV, 
and
>  could well flash over to the 220V terminals.  That would be bad.

Bill,

Dan said he will connect the cases of the transfrormers together and
take the HV from the two bushings.  The cases will both be at ground
potential.

Cheers,
John Freau