Batteryless inverter recommendation [RE-wrenches]

[Joel Davidson]

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Hello Mark,

I have heard good things about the Fronius, but how does the enclosure hold 
up to corrosive coastal air as compared to the Sunny Boy?

Joel Davidson

----- Original Message ----- 
From: "Mark Frye" <markf at berkeleysolar.com>
To: <RE-wrenches at topica.com>
Sent: Tuesday, February 26, 2008 8:25 AM
Subject: RE: Batteryless inverter recommendation [RE-wrenches]


>
> Joel,
>
> I would recommend Fronius.
>
> The Fronius units are the only package that I am aware of that utilize 
> high
> frequency transformation (low weight) and active cooling.
>
> Heat is the killer of electronic over the long haul, so the active cooling
> is very important.  And the fan is of course temperature controlled so it 
> is
> going to have a really long life span.
>
> The weight is very important to me as well. With Fronius I can install 
> 5.1kw
> in a 45 lb. package. That is a major benefit over the 90 - 110 lb. 
> packages
> based on low frequency transformation (big copper xfrmr).
>
> So I go with the only inverter that has both features in one package.  The
> Xantrex has high frequency transformation and is light, but does not have
> active cooling.
>
> The folks at Fronius are looking at an 18 year MTBF for the units. Their
> warranty support is very good. I have never had a problem with any I have
> installed.
>
> Also, I was very interested to see in the recent NREL article that
> circulated about the need for utility disconnects, that the subject 
> inverter
> was a Fronius.  The integrated, load rated, AC and DC "disconnect" 
> switches
> provided with the Fronius were an important positive design feature that
> helped support the conclusion of authors.
>
> Get smart, go with Fronius.
>
> Mark Frye
> Berkeley Solar Electric Systems
> 271 Vistamont Dr
> Grass Valley CA 95945
> (530) 401-8024
> www.berkeleysolar.com
>
> -----Original Message-----
> From: Joel Davidson [mailto:joel.davidson at sbcglobal.net]
> Sent: Monday, February 25, 2008 6:45 PM
> To: RE-wrenches at topica.com
> Subject: Batteryless inverter recommendation [RE-wrenches]
>
>
> Wrenches,
> I like the SMA Sunny Boy (got one on my own home), but want to seriously
> consider other inverters. What grid-tie inverters have given you the 
> highest
>
> reliability (read: no call-backs)? Thanks in advance for your
> recommendation.
> Joel Davidson
>
>
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