[BC] Transformers needed

[Mike McCarthy]

Take a look at the medium voltage products. Everything below 600V is 
considered low voltage for the purposes of the NEC and UL

If you look at distribution products, there are some which are 4KV in and 
240 out.

I would avoid going above 600V as you need special cable and switch gear to 
be safe and code compliant.  Step up from the 60V to 480 (8:1) and your 
project should be good to go with standard switch gear, THHN cable, and 
fusing.  Then you need to consider how to convert that to 120...

Which is a whole different animal....

MM



At 07:32 AM 10/24/2007 -0600, Bill Sepmeier wrote

>Greetings, all ...
>
>I'm looking for some relatively small transformers so that I can complete 
>a micro hydro electric project out at my place.
>
>I have a 3kW 6 phase alternator on a 10" Francis turbine that produces 
>60VAC / 500 watts max per leg, as two three phase WYE outputs.  I want to 
>step this up to 600 VAC for transmission over about 900 feet, then step it 
>back down again.  Four 3 phase xfmrs, or 12 single phase xfmrs will work, 
>but I'm having difficulty finding anything at 10:1.  I could use 5:1, 
>minimum, it'll just require bigger interconnect wire.
>
>If anyone has a line of these little beasts, new or used, please let me 
>know....
>
>Bill
>
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