Batteryless inverter recommendation [RE-wrenches]

[Joel Davidson]

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Did the PV Powered problems have the same cause?

----- Original Message ----- 
From: "Mark Byington" <sales at cobaltpower.com>
To: <RE-wrenches at topica.com>
Sent: Tuesday, February 26, 2008 11:16 AM
Subject: RE: Batteryless inverter recommendation [RE-wrenches]


>
>
> "They would ramp up in DC voltage and current over a ten second interval 
> and
> then snap back essentially to zero and start the ramp up again."
>
>
>
> We have seen this Fronius software issue on numerous systems.  The
> instantaneous output power will continuously cycle up and down over a 
> large
> range, sometimes as much as 2:1, every 45 seconds or so.  We had to
> completely reconfigure (rewire) one large PV array to reduce the problem.
> For this reason we tend to not use Fronius any more.  We have had 
> excellent
> reliability and support on the SMA inverters.  We have had several 
> failures
> on PV Powered.
>
>
>
> Mark Byington
>
> Cobalt Power Systems, Inc.
>
>
>
>
> [Non-text portions of this message have been removed]
>
>
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