[RE-wrenches] 72-cell modules

[Ray Walters]

No suggestions on modules, but possibly you could swap all the good 
modules onto 2 poles, and modify the 3rd rack to hold a set of all newer 
modules?
I just sold a customer a bunch of Solar World 270s, to replace dead 
Astro Power modules on Wattsun racks.
They went for a total square footage that was similar, and apparently 
didn't have much trouble modifying the rack.
(I didn't do the work, originally or after)

R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760

On 1/30/2014 9:37 PM, Allan Sindelar wrote:
> Wrenches,
> About a year ago I asked for suggestions of 72-cell modules with 125 
> mm cells - the standard 155-195W modules of just a few years ago. Now 
> we really need some.
>
> We have a good customer for whom we put in an off grid system in 2006. 
> 48V, 27 BP SX170 modules on three Wattsun trackers. Each tracker holds 
> nne modules, wired as three 72V strings of three modules each.
>
> Yes, the notorious SX170s. Four with burn spots were replaced in 2008, 
> 6 more in 2010, and now ten more failed or are showing discoloration. 
> BP's warranty contractor has agreed to replace the wattage equivalent 
> of 23 of them at $2.00/W. They will either ship us replacement modules 
> or send a check for purchase of replacements elsewhere. The problem is 
> that their only offerings are 60-cell modules, which won't fit the 
> trackers.
>
> BP got out of the solar business before the standard configuration 
> went to the larger 156 mm cells. I would have appreciated a serious 
> corporate effort to procure warranty stock of modules that were most 
> like the ones manufactured by BP, so that they would more readily 
> replace their warranty failures. That apparently is not to be.
>
> The SX170s are 31.1" (790mm) by 62.8" (1593 mm). I need to locate some 
> 72-cell modules in this standard dimension range. We'd probably buy 27 
> of them, once we determine that the replacements can be fit to the racks.
>
> Can anyone suggest a brand/model/supplier etc.? I have seen that 
> Eopply shows 195W mono modules in the U.S. section of their website 
> (thanks, Chris Daum) and I'll call them in the morning. Any other 
> suggestions, please?
>
> Thank you,
> Allan
> -- 
>
> *Allan Sindelar*
> _Allan at positiveenergysolar.com_ <mailto:Allan at positiveenergysolar.com>
> NABCEP Certified PV Installation Professional
> NABCEP Certified Technical Sales Professional
> New Mexico EE98J Journeyman Electrician
> Founder, *Positive Energy, Inc.*
>
> A Certified B Corporation^TM
> 3209 Richards Lane
> Santa Fe, New Mexico 87507
> *505 424-1112 office 780-2738 cell*
> _www.positiveenergysolar.com_ <http://www.positiveenergysolar.com/>
>
>
>
>
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