[RE-wrenches] SolarWorld 245

[Dave Click]

I believe this is saying that after the initial LID (Light Induced 
Degradation), it will be rated at no less than 97% of STC. AFAIK, LID is 
easily a percent or two on most modules. These modules will have been 
tested to produce at least their rated output when they leave the 
factory, before they see sunlight.

-------- Original Message --------
Subject: Re: [RE-wrenches] SolarWorld 245
From: Kent Osterberg <kent at coveoregon.com>
To: RE-wrenches <re-wrenches at lists.re-wrenches.org>
Date: 2010/10/13 15:22

> Marco,
>
> There was a time in the near past when +/- 10% meant that every module
> shipped was at least -5%. Things have improved.
> The copy of the SW 245 spec sheet that I just downloaded has a red note
> explaining that every module is above nominal in their flash test. The
> +/- 3 tolerance may be largely uncertainty in the accuracy of the flash
> test equipment, procedures, and in how the flash test correlates to the
> real world. In other words it is a CYA operation.
>
> Kent Osterberg
> Blue Mountain Solar
>
>
> Marco Mangelsdorf wrote:
>>
>> SolarWorld is pushing hard its 245-watt module with the claim that it
>> has won the Photon mag module competition in 2008 and 2009 (compared
>> to several other manufacturers).
>>
>> I can send the spec sheet to anyone who wants it. It states on the
>> front page: SolarWorld only delivers modules that have */greater than
>> or equal to the nameplate rated power/*. (emphasis added)
>>
>> This implies clearly to me a minus zero percent power tolerance.
>>
>> And then you look at the finer print on page 2 and see under *Power
>> Tolerance : +/- 3%**
>>
>> *Only modules with flash-tested > or = Pmax are delivered. Linear
>> warranty guarantees Year 1 module output to > or + 97% or Pmax.
>>
>> I’m confused. Does this mod actually have a -0 PT or not?
>>
>> And on another note, are many of you finding it difficult to get an
>> adequate supply of PV mods to meet your demands these days?
>> SolarWorld, Schott, Sharp and Kyocera seem to be in short supply these
>> days out in these here parts.
>>
>> Thanks,
>>
>> marco
>>
>
>
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