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Re: [TCML] surge arrestor for pole pig

David Rieben will reply, I'm sure, as he uses surge arresters as protection for his pole pigs and seems to like them.  On the whole, I think the Tesla coiling community lacks sufficient data to suggest whether these are really the way to go or not.  My own preference is safety gaps, mainly because:
1) You can see them operate.
2) They can't be destroyed (easily, anyway :-))

The particular arresters shown below appear to be fairly old.  They probably employ silicon carbide elements with air gaps in between.  Modern MOV-based arresters are much more non-linear and generally way better.  IIRC, that's what Dave uses.  You might wait around for one of those to appear.

Cheers,
Aaron, N7OE

--- On Wed, 9/17/08, Jim Calvin <jcalvin@xxxxxxxxxxxxxxx> wrote:

> From: Jim Calvin <jcalvin@xxxxxxxxxxxxxxx>
> Subject: [TCML] surge arrestor for pole pig
> To: "'Tesla Coil Mailing List'" <tesla@xxxxxxxxxx>
> Date: Wednesday, September 17, 2008, 10:56 AM
> I am looking to purchase two of these to protect my pole pig
> (25KVA
> 14400VAC).  Would two of these in series work as a 30KV
> surge arrestor?
> Figuring peak output of my pole pig is aprox. 20KV. Could
> this protect my
> pole pig from arcs from the secondary back to the primary? 
> This happens
> only rarely but has happened.
> 
>  
> 
> http://cgi.ebay.com/MCGRAW-EDISON-15KV-DISTRIBUTION-LIGHTNING-ARRESTOR_W0QQi
> temZ180285461245QQcmdZViewItem?hash=item180285461245
> <http://cgi.ebay.com/MCGRAW-EDISON-15KV-DISTRIBUTION-LIGHTNING-ARRESTOR_W0QQ
> itemZ180285461245QQcmdZViewItem?hash=item180285461245&_trkparms=72%3A1205%7C
> 39%3A1%7C66%3A2%7C65%3A12%7C240%3A1318&_trksid=p3286.c0.m14>
> &_trkparms=72%3A1205%7C39%3A1%7C66%3A2%7C65%3A12%7C240%3A1318&_trksid=p3286.
> c0.m14
> 
>  
> 
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