At 09:03 AM 10/4/01 -0400, you wrote:
>Check out McMaster Carr.  I believe I purchased a 220 to 600 Vac step up
>transformer from them at a different job.  I used a 110 to 220 step up to
>drive it, and sized out all the KVA's.  Worked ok, since it was designed to
>do this.  I don't think I spent more than $100 on the transformers.
>
>Scott F. Touchton
>1550 Engineering Manager
>JDS Uniphase

550VAC transformers (often called "600VAC") are easy to get and cheap in
Canada, and similarly 480VAC transformers in the USofA (one of the few
differences in the electrical systems). This is a good idea. You'd go to
the "Electrical" transformers rather than the "Electronic" types (open,
dry 'control' transformers).

If a 480VAC transformer secondary is put in series with the incoming 240VAC
(no isolation!!!) or an isolation transformer then you get 720VAC.
120+480 = 600VAC, 550VAC + 120 = 670 VAC etc. Hammond should have both
types.

Best regards,
Spehro Pefhany --"it's the network..."            "The Journey is the reward"
speff@interlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com
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