[TCML] Pole Pig

[Robert Davies]

Thanks guys for all the replies, I had a chance to look at one of those 
units at a local power company WOOOOF!! that thing is a beast. This one was 
a 34.5 kva but it still was almost 4 feet high and weighed in at 550 lbs I 
will stick to my 50 kv @250ma x-ray tf and build a container for it and fill 
it with oil. Anyway great advice as always and happy coiling.

Peace
Robert Davies

--------------------------------------------------
From: "David Rieben" <drieben at comcast.net>
Sent: Wednesday, September 30, 2009 4:57 PM
To: "Tesla Coil Mailing List" <tesla at pupman.com>
Subject: Re: [TCML] Pole Pig

> Hi Scot,
>
> Yes, your "cons" of these transformers pretty much mirror
> mine although I do tend to at least partially disagree with
> your point # 4:
>
>> 4.  Current limiting a piggie that size would be a challenge...
>>
>
> Personally experience has dictated to me that there's very
> little difference in ballasting a 5 kVA pig as opposed to
> ballasting a 25 kVA rated one, as far as the limited output
> current draw is concerned. This seems to be the case with
> all non-current limited transformers, within reason. With the
> same ballast, the current draw with a shorted output will be
> almost equal with the 5 kVA unit as with the 25 kVA unit.
> If your ballast is in proper working order, your current draw
> should be limited to a certain amperage, even with a dead
> short on its output. Now I do agree that the 5 kVA unit will
> "get warm" much faster than the 25 kVA unit in this scenario
> and of course, if you wish to utilize the transformers' full rated
> kVA potentials, then the 25 kVA unit would obviously require
> much beefier ballasting than would the 5 kVA unit.
>
> David Rieben
>
> ----- Original Message ----- 
> From: "BunnyKiller" <bunnikillr at cox.net>
> To: "Tesla Coil Mailing List" <tesla at pupman.com>
> Sent: Wednesday, September 30, 2009 9:39 AM
> Subject: Re: [TCML] Pole Pig
>
>
>> Hey Robert...
>>
>> went to the Ebay listing you supplied and saw 3 things that will be 
>> "unsatisfying" if you purchased the units pictured.
>>
>> 1.  They are 50KVA  =  Huge, very heavy, very hard to move around in 
>> general aspects.
>> 2.  The voltage stated it was 7200 V. Rather on the low side for Tesla 
>> coiling ( really should be in the 14,000 range)
>>      Kinda like putting a lawn mower motor in an 18 wheeler truck.
>> 3.  I saw only 1 insulator on top, this requires you to do some different 
>> wiring ( not like an NST with 2 insulators) to get things to work.
>>
>> oh yea...  there is a number 4
>>
>> 4.  Current limiting a piggie that size would be a challenge...
>>
>> Scot D
>>
>>
>>
>> Robert Davies wrote:
>>
>>>Hello All,
>>> A while back I purchased a 50kv x-ray transformer for my projects. Now I 
>>> have the opportunity to purchase a pole pig that is in my local area. My 
>>> question is what are your thoughts on the price? also I have found they 
>>> are not so easy to get in Florida and if it's not local shipping can be 
>>> more than the unit itself. This one I don't have to build a container 
>>> for and locate oil and the like.
>>>
>>>
>>>http://cgi.ebay.com/ABB-50-KVA-Pole-Type-Transformers-12470-GY-7200-120-240_W0QQitemZ150360378657QQcmdZViewItemQQptZBI_Circuit_Breakers_Transformers?hash=item23022d4d21&_trksid=p4634.c0.m14.l1262
>>>_______________________________________________
>>>Tesla mailing list
>>>Tesla at pupman.com
>>>http://www.pupman.com/mailman/listinfo/tesla
>>>
>>>
>>
>>
>> _______________________________________________
>> Tesla mailing list
>> Tesla at pupman.com
>> http://www.pupman.com/mailman/listinfo/tesla
>
> _______________________________________________
> Tesla mailing list
> Tesla at pupman.com
> http://www.pupman.com/mailman/listinfo/tesla
>