http://www.amazon.com/Extech-380260-Autoranging-Digital-Insulation/dp/B000EWW2UA/ref=sr_1_1?ie=UTF8&qid=1354065758&sr=8-1&keywords=extech+insulation
$239
On Tue, Nov 27, 2012 at 7:32 PM, Robert Nuese wrote:
> Thanks to the Wrenches who have offered good advice.
>
> In answer to several of you
Someone earlier suggested contacting Solmetric in Sebastapol:
http://www.solmetric.com/contact-us.html
Their PVA I-V curve tracer is a great troubleshooting tool, and they also carry
a Megger MIT 430 insulation tester:
http://www.solmetric.com/megger-mit430.html
Maybe they have a kit (PVA + Me
Thanks to the Wrenches who have offered good advice.
In answer to several of you who suggested megger testing,
No, I'm afraid I don't own a megger. It had become clear to me that
this might well be a useful tool in my case, but the things are expensive.
I've managed to install pv systems for 10 ye
Let us know what the megohmmeter says. FWIW: There is some precedent for
premature product failure in a roof-integrated product manufactured by Energy
Conversion Devices (Uni-Solar):
http://www.utsandiego.com/news/2012/sep/14/tp-flawed-solar-panels-removed-at-schools/?print&page=all
On Nov 27,
Robert,
Having installed hundreds of Uni-Solar modules, the only failure I every
experienced was a framed US64 that had the PV negative short to frame. Flexing
the module would create intermittent failure. You have PV laminates so your
ground fault may be to the metal roof. I might be stating
d try to find it using the
voltage method you've been doing.
Date: Mon, 26 Nov 2012 16:55:16 -0800
From: Robert Nuese
To: re-wrenches@lists.re-wrenches.org
Subject: [RE-wrenches] Unisolar Intermittent Ground Fault
Message-ID: <9c067b77-378b-40ed-ab44-ff966dc20...@sonic.net>
Content-Type:
If you're in Sebastopol you could ask Paul Hernday at Solmetric if the PVA
would help.
Blessings,
Kelly
On Nov 26, 2012, at 4:55 PM, Robert Nuese wrote:
> Dear Wrenches
>
> I've been experiencing a troubleshooting problem that you may be able to
> help me with. Or, can anyone refer me to som
Have you tried a megger? The 1,000v setting should display any breakdown
areas.
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Dear Wrenches
I've been experiencing a troubleshooting problem that you may be able to
help me with. Or, can anyone refer me to someone, maybe an electrical
engineer?, who I could hire to help.
About 7 years ago I installed Unisolar modules on all the roofs of a complex
of 12 mixed use buildings
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