Re: 50 KVA Pole Pig

• To: tesla-at-pupman-dot-com
• Subject: Re: 50 KVA Pole Pig
• From: Bert Hickman <bert.hickman-at-aquila-dot-com> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Wed, 05 May 1999 11:55:16 -0600
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

Tesla List wrote:
> 
> Original Poster: Jason Zuberer <jason-at-vortexia-dot-com>
> 
>     I recently came upon a total of three 50 KVA, RTE (brand?) pole pigs
> that I can have for free. They all work and are certified NON-PCB and
> weigh in at 790lbs each. The question is how easy would it be to limit a
> pig that large and what monster of a coil would I need to build to
> utilize it?
>     I have access to 2 pulse rated caps at .05uF-at-50KV and can build a
> rotary gap if needed. I have a feeling that the pigs are overkill, but
> who can resist free!
> 
>     Pig specs:
>                     RTE# 14400/24940GRDY -120/240 50KVA NON-PCB
>                     RTE# 13900/23900GRDY -120/240 50 KVA NON-PCB
>                     RTE# 14400/24940GRDY -120/240 50KVA NON-PCB
> 
> Please give advise soon, I have to pick them up this week if I want
> them.
> 
>                 Thanks
> 
>                             Jason Zuberer

Jason,

Nice catch, at a very nice price! :^)

Although these are physically larger, and will have higher core losses,
they will otherwise behave just like their 10-15 KVA cousins. Thus, you
can ballast these in the very same fashion - simply connect a
short-circuited 200 Amp AC welder in series to limit the short circuit
current to about 50 Amps off the mains (12 KVA).  Adding an identical 
welder in parallel with the first will take you up to 100 Amps (or 24
KVA). And so on, up to the limit of your branch circuit or your main
breaker. 

Safe coilin' to you!

-- Bert --

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