[RE-wrenches] old sanyos failing Iso test

[Ron Young]

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 <mailto: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
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