[RE-wrenches] Testing LSAs

[Andrew Truitt]

Question: Since the Delta lightning arrestors are not UL Listed, do they
threaten the UL compliance of the PV system as a whole?


- Andrew Truitt
Currently of Standard Solar
Free agent in the Denver area as of 10/6/10



On Tue, Aug 24, 2010 at 6:02 PM, Peter Parrish <
peter.parrish at calsolareng.com> wrote:

> I would think that an ohmmeter set to the 10 Mega-ohm setting (or the
> highest setting possible), would be the first test. I would like to see
> something on the order of 750 k-ohms (3/4 of a mega-ohm).
>
> But the system should be tested at a higher voltage, than that available
> from a DMM. Apply 240 Vac and measure the RMS current. It should be should
> be 0.3 mA or less.
>
> Finally, these puppies really need to be tested at much higher voltages,
> perhaps someone knows how to use that megohmmeter to test? What does the
> manu recommend, “if suspect, throw it away and buy a new one”?
>
> - Peter
>
> Peter T. Parrish, Ph.D., President
> California Solar Engineering, Inc.
> 820 Cynthia Ave., Los Angeles, CA 90065
> CA Lic. 854779, NABCEP Cert. 031806-26
> peter.parrish at calsolareng.com
> Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885
>
>
> ________________________________________
> From: re-wrenches-bounces at lists.re-wrenches.org
> [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Kristopher
> Schmid
> Sent: Tuesday, August 24, 2010 1:30 PM
> To: 'RE-wrenches'
> Subject: [RE-wrenches] Testing LSAs
>
> What is the best method for testing the integrity of a DC and/or AC
> lightning surge arrestor?  Specifically, i use the Delta LA units.  I know
> they should be replaced if they look Bar-B-Qued, but otherwise...?
>
> Thanks,
> Kris Schmid
>
> Legacy Solar
> 864 Clam Falls Trail
> Frederic, WI 54837
> 715-653-4295
> solman at legacysolar.com
> www.legacysolar.com
>
>
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-- 
"Don't get me wrong: I love nuclear energy! It's just that I prefer fusion
to fission. And it just so happens that there's an enormous fusion reactor
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ever use in just about 8 minutes. And it's wireless!"

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