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Registered Member #1407
Joined: Fri Mar 21 2008, 07:09AM
Location:
Posts: 222
haha thanks for telling us about this very intresting
How ever i must say i was extecting the transformer its self to be of larger size , any way here in sydney we dont have cylinder thype polpigs , they are actually square and 2.5 times the size of that core
Registered Member #941
Joined: Sun Aug 05 2007, 10:09AM
Location: in a swedish junk pile
Posts: 497
The making of transformer like this is not new to me, my job is actually making them, my work produce everything from small 5VA up to a few KVA single phase and up to 1MVA in the standard EI style three phase, from 5VA up to around 6.6KVA in donut and up to 1MVA in a new so called "hexaformer" style transformer.
Registered Member #1407
Joined: Fri Mar 21 2008, 07:09AM
Location:
Posts: 222
HFsstc-freak wrote ...
The making of transformer like this is not new to me, my job is actually making them, my work produce everything from small 5VA up to a few KVA single phase and up to 1MVA in the standard EI style three phase, from 5VA up to around 6.6KVA in donut and up to 1MVA in a new so called "hexaformer" style transformer.
perhaps you could tak a few pictures and movies and share them with us, i bet you could describe it a lot mor proffecionaly than those guys in da vid
Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
Myke wrote ...
Lol, I liked that vid. "How it's Made" on discovery is great.
Uhh, you US guys have so much tv channels, we have four free here (will be a bit more digital ones) and they play mostly films and entertainment, no dedicated channels
Anyway I liked how the core was made, I thought the finished coil is slid onto the core but the core is actually slid over the coil!
Registered Member #902
Joined: Sun Jul 15 2007, 08:17PM
Location: Pacific Northwest USA
Posts: 1042
nice video... hope it stays on youtube awhile before being pulled, I know someone who would want to see this and too bad they only test to 145Kv... as I have seen two pole pigs blow up already ^_^
Registered Member #477
Joined: Tue Jun 20 2006, 11:51PM
Location: Seattle, WA
Posts: 546
Neat video. Thanks for posting! I assumed it would be one I'd already seen, but it was actually much better than the one I'd already seen, which showed only the winding part of the process.
DaJJHman wrote ...
too bad they only test to 145Kv... as I have seen two pole pigs blow up already ^_^
The primary voltage figures in the hi-pot and impulse test goals for the transformer. 7200V pole pigs are usually tested to "only" 95kV BIL, for example. But "high BIL" is usually available as an option. I've got a couple of transformers with 200kV BIL ratings. But BIL won't necessarily save you from resonant overvoltages and other kinds of overvoltages seen during Tesla coil use (e.g., primary strikes) since BIL is a very short-duration pulse rating, generally given in uS.
Registered Member #618
Joined: Sat Mar 31 2007, 04:15AM
Location: Us-Great Lakes
Posts: 628
That particular video is from a Discovery show here in the US called "How it's made". I wanted to record that episode and post it since quiet a few folks here have pole pigs.
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The making of a pole pig.
