Approximate age please..... [RE-wrenches]

[Windy Dankoff, Dankoff Solar]

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John,

Are they 1 X 4 foot modules?

What is the model number?

Windy




On Aug 2, 2004, at 5:01 PM, Dan Rice wrote:

>
> John,
>     Sounds like you have Arco M-51's, although, from my old notes, the 
> Arco
> 16-2300 was very similar if not identical. If it's either of these, 
> they're
> 35 mono-crystalline cell modules -two outside rows of 12 cells and one 
> row
> of 11 cells in between. In the Home Power archive, Issue 36 (Aug/Sept 
> 1993),
> P.1 shows an  AEE ad listing "10 year old M-51 modules from a 
> Washington
> State Utility Company." That would place production sometime around 
> 1983.
> The ad pictures something that looks potentially correct, though it 
> lists
> them as 36-cell (the photo image looks like a 33 cell 16-2000, but it 
> also
> looks like it's been cut off at the bottom). The ad also claims peak 
> output
> of 2.4 A @ 16.5V, which is close to 40 W. The M-51's I saw were not 
> labelled
> with performance specs.
>     Home Power Issue 33, page 24, shows a photo of the inside of the 
> M-51
> J-box I believe you're referring to. The caption on the photo begins 
> "This
> ancient module has one of the finest junction boxes we surveyed." I 
> guess 10
> years old meant "ancient" back then. Now that's just broken in.
>     The 16-2300's I saw were labeled by Arco with the model number
> (16-2300), but they're identical to the M-51 in size, number of cells, 
> and
> J-box. The only two I've seen were re-labeled  "Tested and warranted by
> Dankoff Solar Products, Santa Fe, NM. Nominal Volts 12, Amps: 2.2, Peak
> Power 33 watts at 16 volts." Windy may remember back that far; it's 
> before
> my time in this line of work.
>     BTW, I recently had need to find data on Shell SQ-80 modules (last
> year's model, not the new "P" version). Shell has seen fit to delete 
> web
> access to data sheets for all of their products except current 
> production.
> They claim that providing spec sheets on modules that are no longer
> available caused too much confusion among web site visitors. Never 
> mind that
> wrenches might actually want to match their new products to last years'
> offerings. Those who use Shell products might want to let Shell know 
> that
> dropping access to information is counter productive. (I'd love to see 
> data
> sheets on all of the old Arco/Siemens/Shell products -there are plenty 
> of
> them out there -what would be the harm?) BP has recently dropped their
> technical notes section from their web site also -a pretty sad industry
> trend. (I've griped to both companies -the tech support folks sound
> receptive to the concern -let your voice be heard, fellow "consumers").
>
> Dan Rice
> Abundant Sun, LLC.

>
> ----- Original Message -----
> From: "John Veix" <john at gosolar.co.nz>
> To: <RE-wrenches at topica.com>
> Sent: Monday, August 02, 2004 2:10 PM
> Subject: Approximate age please..... [RE-wrenches]
>
>
>
> Hi all,
>
> I've just inherited a system that has 14 of ARCO 55w panels - they 
> have the
> big round junction box with 4  connectors inside.
>
> What would their approximate age be please.
>
> They are working fine, just a reduced output. A couple of the mounting
> junction boxes came loose and had to be re-glued back on.
>
>                                 thanks a lot,
> John V
>
>
>
>
>

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