[RE-wrenches] CEC module rating testing
Joel Davidson
joel.davidson at sbcglobal.net
Mon Dec 1 19:42:45 PST 2008
Microsoft Outlook SignatureI'm curious to see if this little excel spreadsheet PTC calculator that I got from the CEC in 2003 attaches.
----- Original Message -----
From: David Katz
To: RE-wrenches ; solarcowboy at yahoo.com
Sent: Monday, December 01, 2008 6:48 PM
Subject: Re: [RE-wrenches] CEC module rating testing
Jerry,
The CEC formula for PTC uses the NOCT of the module, the STC rating, the power temperature coefficient and the aperature area of the module.
The data is supplied by the manufacturer but must make sense. Starting July 1, 2009, this will have to be certified by an acredited testing lab.
Let me know if you want the exact formula and i will send it to you. i can't attach anything to this email
David
David Katz
President
AEE Solar
1155 Redway Drive
P.O. Box 339
Redway, CA 95560
Tel (707) 825-1200
Fax (707) 825-1202
david at aeesolar.com
www.aeesolar.com
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Jerry Caldwell wrote:
Wrenches,
Can anyone tell how PTC ratings are determined for modules on the CEC list of eligible modules? I seem to recall having heard that the manufacturers provide this data on the honor system. Can anyone verify this?
The test is obviously more involved than flash testing at STC. Even though PTC is supposed to simulate more real-world conditions, it must still require a controlled environment. How exactly is this done, and how long does it take?
Best,
Jerry Caldwell
Recurrent Energy
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