Need Xantrex help (again) [RE-wrenches]

[Bill Brooks]

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Chris,

I would agree that a single switch is needed for series stacked inverters
since shutting down one inverter could cause some issues. It really depends
on the design of the inverter, but two inverters generally become one in a
series stacked situation. Running them in a different configuration, without
knowing the consequences on the ac or dc side seems pretty risky.

Bill.


-----Original Message-----
From: Christopher Freitas --- OutBack Power
[mailto:cfreitas at outbackpower.com]
Sent: Friday, July 30, 2004 2:40 PM
To: RE-wrenches at topica.com
Subject: RE: Need Xantrex help (again) [RE-wrenches]


Bill Brooks wrote:
> William didn't state that this was a dual inverter situation. If it is
> not, the Square-D solution should work just fine--agreed? The wiring may
> be a little odd, but not that bad for a single inverter.

Yes - that is correct, Bill - I was jumping to conclusions that it was a
dual inverter system since he wanted the Xantrex enclosure so much
(which probably meant lots of breakers).  It is a nice enclosure for
holding the QOU breakers - Bill Hoffer designed it and did a very good
job on it - lots of access to the breaker terminals.

For single inverter applications the SquareD three phase box works well
- for dual inverter applications you need two seperate boxes.  This
makes it a bit messy in my opinion and opens up all kinds of possible
problems with other certain brands of series stacked inverters (but not
mine...).  I don't think separate bypasses for each leg should be
considered acceptable - what is your thought on this, Bill? Others?

Christopher Freitas
OutBack Power Systems, Inc.
cfreitas @ outbackpower.com
www.outbackpower.com
Arlington WA USA
Tel 360 435 6030

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