Re: Grounding HV side of a pig (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: List moderator <mod1@xxxxxxxxxx>



---------- Forwarded message ----------
Date: Wed, 23 May 2007 13:51:34 -0700 (PDT)
From: J. Aaron Holmes <jaholmes@xxxxxxxxxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: Grounding HV side of a pig (fwd)

Have you checked the nameplate on the transformer can?
 It may indicate which lead to ground for "Y" service.

In some transformers, it may not matter which one you
ground.  AFAIK, a transformer wound on "C" core (one
big iron donut), often has half of the HV winding on
one "leg" of the core and one half on the other. 
Hence, neither HV lead would necessarily be closer to
the core or the can.

In any event, opening pigs is usually not a terrible
thing, and it ought to be pretty easy to see what lead
goes where from a glance down into the oil.  No need
to drag the poor beast out or anything! :-)

Cheers,
Aaron, N7OE

--- Tesla list <tesla@xxxxxxxxxx> wrote:

> Original poster: List moderator <mod1@xxxxxxxxxx>
> 
> 
> 
> ---------- Forwarded message ----------
> Date: Wed, 23 May 2007 08:16:59 -0500
> From: Stan <wsmg@xxxxxxxxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: Grounding HV side of a pig
> 
> Hey all,
> 
> Mike Hardy(email is screwed-up) wants to ground 1
> leg  of the HV side of 
> his 2 horned 10kva pig. Is there a way to determine
> which horn is the 
> lead closest to the core other then opening it up?
> 
> Thanks,
> Stan
> 
> ps, will be coiling this weekend in Waupaca, WI and
> firing up Sparky 
> Matic if anyone is going to be in the area. Contact
> me off list for details.
>
http://www.ispdial.com/SkyXPRess_net/MyHomePage/config.cfm?kName=wsmg
>      
> click on my pics
> 
> 
> 
>