Re: [pvusers] Re: Question on inverting DC to AC

["Dan Metcalf" <dan@metcalfs.com>]

I believe that Exeltech does have regular options for both 100VAC & 50Hz.
Don't know if they charge more for those units, but I've heard that they do
ship a few to Japan for telco operations.

Another place to look into would probably be suppliers to phone system
providers.  Their DC usually runs 48v, and some of them run inverters for AC
systems requiring backup power.

Good luck!

Dan Metcalf
dan@metcalfs.com
http://www.metcalfs.com
The Sun!  Your source of energy for 5 billion years!
  Free while supplies last!

----- Original Message -----
From: "Christopher Witmer" <cdwitmer@spamcop.net>
To: <pvusers@crest.org>
Sent: Monday, September 09, 2002 2:48 PM
Subject: [pvusers] Re: Question on inverting DC to AC


> I'm trying to build a system for use in Eastern Japan, which is
> 50Hz/100VAC. Inverters designed specifically for the Japanese market are
> more expensive than others, such as 60Hz/120VAC inverters, since the
> Japanese market is small. If I could obtain a (relatively) cheap
> inverter designed for the USA market and then get it modified for
> 50Hz/100VAC operation, that could be a viable solution for me. Does
> anyone have any idea about how difficult it would be to make such a
> modification to an existing inverter?
>
> Thanks,
>
> Christopher Witmer
>
> Robert Warren wrote:
>
> >  If you were building an inverter (and I know you aren't from the
> question you asked), then it is no big deal to step up the DC voltage
> with a bridge rectifier/capacitor circuit: a lot of inverter
> manufacturers have entirely gotten away from using big transformers.
>
>
>
>
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