[RE-wrenches] old sanyos failing Iso test

[Chris Worcester]

We did a number of Sanyo HIP195, 200, and 210 installs, so far we’ve had a few failures showing up as backsheet bubbles. Some of the bubbles were so big that the wafer fell away from the glass! Here’s a couple photos. Didn’t think Panasonic would take care of this, after an exhausting warranty procedure that drew on for months on one system… their Japanese engineering dept said no to our request for replacements on that one eventually.   

 

Chris Worcester

Solar Wind Works

NABCEP Certified PV Installer

Office 530-582-4503

Cell 530-448-9692

Fax 530-582-4603

www.solarwindworks.com

chris at solarwindworks.com

 

From: RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Ron Young
Sent: Monday, May 14, 2018 12:49 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] old sanyos failing Iso test

 

I have several dozen older Sanyo’s installed from that period. Are there any obvious physical degradations to look for or specific tests that can show issues? I don’t have a megger but have two systems installed in grid tied systems and a couple off-grid. No performance complaints as yet.

 

Ron

 

On May 13, 2018, at 11:51 AM, Jerry Shafer <jerrysgarage01 at gmail.com> wrote:

 

Kirk

I dont know if you know this but Panisonic will warranty the old Sanyos, just got this from a rep last week.the issue you are having may be due to the failing of the back sheet under the frame edge.

Jerry

 

On Sun, May 13, 2018, 6:04 AM Kirk Herander <vtsolar at icloud.com> wrote:

I now have two systems with older Sanyos(Panasonic), circa 2004, which consistently fail the inverter (Solaredge) startup Insolation test in wet weather. Usually 200 – 550 kohms, just below the inverters 600k limit. Confirmed by my meggering. I discovered this after convincing the owners to upgrade the inverters from old SMA’s which don’t test for it. Anyone else see this issue in older panels, in particular Sanyos?

 

Kirk Herander

Owner|Principal, VT Solar, LLC 

Celebrating our 27th Anniversary 1991-2018

www.vermontsolarnow.com <http://www.vermontsolarnow.com/> 

dba Vermont Solar Engineering

NABCEPTM  2003 Inaugural Certificant

VT RE Incentive Program Partner

802.863.1202

 

 

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