Battery less Inverters [RE-wrenches]

[Jim Hartley]

Travis Creswell, Ozark Solar wrote:
> Actually Trace Sun Tie's to be more specific.  I have a few quotes out 
> there
> with Sun Tie's and am thinking about pulling them.  Recent posts (can I 
> say
> all of the posts) on the Sun Tie from people who have actually installed
> them is that they aren't working.

This is important to know about.  I have yet to consider one of these 
particular units seriously for anything.  I'd rather others do that 
first.  Maybe we should take a poll of about how many of various types 
of grid-tie inverters have been installed by those here and see how each 
unit has performed.  I had a developer contact me just today wanting to 
put PV into fourteen condominiums he's going to build in a rather 
politically sensitive, high profile project. If this does go forward 
this would NOT be a good place for any problems occurring.  It would be 
most embarrassing, not to mention frustrating.  This project must be 
foolproof and idiot proof.

> From what I gather they cut out at/above ~600 watts.  Is this just one 
> Sun
> Tie model or do we suspect it's all of them?

Hmmm.  Troubling.

> What other brands are available in the US today?  Omnion?  AES?
> 
> Travis

SMA/Sunny Boy [German] was mentioned
Advanced Energy  [not the same as AES I think]

Both of these look interesting.  Also, Omnion has a lot of experience
through the years. As some may recall, Omnion derives from the old 
Windwerks group near Milwaukee.  The first inverters I ever sold were 
two of their first grid-tie units which went to Wisconsin Electric Power 
for a test project.  That was in 1983.



Jim Hartley
http://www.homestead-specialties.com
Business Email: JamesHartley at homestead-specialties.com
Direct Email: grail at inil.com

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