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Model Forum / General / Models / December 2006All this talk of Transformers......
Greetings all, I'm on the lookout for a meaty transformer as the basis of a single to 3 phase converter for 3 to 4 HP This could be an auto transformer 230 in -415 out or a 230in 115 out isolating transformer with some taps on the 230 volt winding enabling me to connect mains into a lower voltage tap designed for say 210v and put the secondary in series with the primary to get around 400-440 volts out. Anyone got anything lying around to swap for beer vouchers or eternal gratitude etc?? TIA Bob in Southampton area >Greetings all, > [quoted text clipped - 13 lines] > >Bob in Southampton area That's one of the reasons I've got one. Haven't plumbed it in yet though... 240+110+55=405. I'd much rather find a 240/415 transformer for a good price, but they don't seem to be as cheap or easy to get retail in on-offs at 2-3kVA sizes. Mark Rand RTFM >>Greetings all, >> [quoted text clipped - 22 lines] >Mark Rand >RTFM If you find a source tell us! My homebrew version is running two large 415v to 55-0-55 transformers "in reverse" with series input and parallel outputs (a Pentagrid Jim suggestion). Works OK Transwave will sell you a bare tranny as a start point. Charles > >>Greetings all, > >> [quoted text clipped - 30 lines] > > Charles I had a transformer built for my converter by JMS transformers in Peterborough a couple of years ago, they did an 8KVA unit in a floor standing case for £155; they can be contacted by email at jms@transformers.gb.com (usual disclaimers apply). Martin  Signaturemartin<dot here>whybrow<at here>ntlworld<dot here>com > Greetings all, > [quoted text clipped - 13 lines] > > Bob in Southampton area Bob, A few years ago someone here contacted one of the converter companies ("Boost"?) and persuaded them to sell a couple of transformers for a sensible (but not cheap) price - it might be worth a few calls. Dave > > Greetings all, > > [quoted text clipped - 21 lines] > > Dave Hi Dave & other respondants Ive been in touch with both a transformer manufacturer (Douglas) and http://www.powercapacitors.co.uk/transwave.htm. The latter seem completely happy to sell the transformers that they use in their products. As an example, the tranny from this model http://tinyurl.com/ybpcxj they will sell for £108 plus 10.50 carriage all plus vat total 'bout £139 This is cheaper than Douglas. I guess this is not too bad a price although more beer vouchers than I currently have to spare for the project. Maybe I could sell the excesses of Christmas socks, handkerchiefs, slippers etc on Fleabay to raise funds? Regards Bob > Bob Minchin wrote: > > Greetings all, [quoted text clipped - 22 lines] > > Dave Hi Dave & other respondants Ive been in touch with both a transformer manufacturer (Douglas) and http://www.powercapacitors.co.uk/transwave.htm. The latter seem completely happy to sell the transformers that they use in their products. As an example, the tranny from this model http://tinyurl.com/ybpcxj they will sell for £108 plus 10.50 carriage all plus vat total 'bout £139 This is cheaper than Douglas. I guess this is not too bad a price although more beer vouchers than I currently have to spare for the project. Maybe I could sell the excesses of Christmas socks, handkerchiefs, slippers etc on Fleabay to raise funds? Regards Bob Bob, I bought a transformer direct from Transwave a few years back when I made a 10KW converter (I think it's the one Tim Leech now has) - they were excellent to deal with, brought it to the ME show at Wembley (that dates it!) and the chap even lugged it into my car boot as I had a dicky back at the time. I'd done a lot of searching arround and they were the best deal I could find. AWEM "Andrew Mawson" <andrew@no_spam_please_mawson.org.uk> wrote in message> > I bought a transformer direct from Transwave a few years back when I > made a 10KW converter (I think it's the one Tim Leech now has) - snip> > AWEM Andrew, would that have been the converter that I gave you a whole load of capacitors in exchange for a 3 phase motor for my compressor a good few years ago? Your post just stirred my memory Bob > "Andrew Mawson" <andrew@no_spam_please_mawson.org.uk> wrote in message> > > I bought a transformer direct from Transwave a few years back when I [quoted text clipped - 6 lines] > Your post just stirred my memory > Bob Yes Bob, that's the one - many years ago wasn't it !!!! AWEM Hang on until we move the factory. We used to have some 230/415 trannies for some spot welders that we sold, and I think the transformers may well be lurking under benches in the factory, covered in 20+ years of dead spiders and dust. I'll have a tentative poke around after Xmas when we move out the coilwinding gear and have a bit of free space. Peter -- Peter A Forbes Prepair Ltd, Luton, UK prepair@easynet.co.uk http://www.prepair.co.uk >Hang on until we move the factory. We used to have some 230/415 trannies for >some spot welders that we sold, and I think the transformers may well be lurking [quoted text clipped - 4 lines] > >Peter Transformers (plural)? Form an Orderly queue! Mark Rand RTFM >> Hang on until we move the factory. We used to have some 230/415 trannies for >> some spot welders that we sold, and I think the transformers may well be lurking [quoted text clipped - 11 lines] > Mark Rand > RTFM Me too! :-) Dave >>> Hang on until we move the factory. We used to have some 230/415 trannies for >>> some spot welders that we sold, and I think the transformers may well be lurking [quoted text clipped - 15 lines] > >Dave No promises! but they should still be there, somewhere.... Because the spot welders were 415V single-phase input, we had to have the trannies made to run them off 240V 13A sockets, and when the welders went I am sure we didn't let the transformers go with them. We've been in the factory since it was new, 23 years this coming Xmas.... Seems like yesterday.... Peter -- Peter & Rita Forbes Email: diesel@easynet.co.uk Web: http://www.oldengine.org/members/diesel >No promises! but they should still be there, somewhere.... > [quoted text clipped - 7 lines] > >Peter Peter I'm putting my hand in the air aswell! Count me in if you find a horde. Charles > Peter > I'm putting my hand in the air aswell! > Count me in if you find a horde. Indeed. Should you find a horde, I could be interested too :-). Chris >> Peter >> I'm putting my hand in the air aswell! [quoted text clipped - 3 lines] > >Chris I guess if we actually had a horde, we'd be looking for two new factories, not one! New place is just round the corner from where we live, so a minute or so to walk to work each morning rather than hour and a half or more and the same at night. Also nearly twice as big, so room for yet more junk.... :-)) Peter -- Peter & Rita Forbes Email: diesel@easynet.co.uk Web: http://www.oldengine.org/members/diesel > Hang on until we move the factory. We used to have some 230/415 trannies for > some spot welders that we sold, and I think the transformers may well be lurking [quoted text clipped - 9 lines] > prepair@easynet.co.uk > http://www.prepair.co.uk Duly hanging on Peter!! Thanks in advance Bob |
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