I had good luck finding an old but unused Sunny Boy that was easy to set to positive ground.
I wonder how many of those are still sitting in warehouses...
DonB
Message: 1
Date: Fri, 19 Mar 2021 18:59:51 +0000
From: Isaac Opalinsky <[email protected]>
To: RE-wrenches <[email protected]>
Subject: Re: [RE-wrenches] [EXT] Re: Positive grounded inverters for
SunPower modules
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<byapr07mb78138b8aa507c6d5d37eb3fe88...@byapr07mb7813.namprd07.prod.outlook.com>
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Don,
Have you contacted SunPower Technical Support yet? If you can?t find what you need from third parties, some SMA inverter options might be available directly from SunPower. I?m assuming the original inverters are long out of warranty, but we may have a compatible SMA inverter available for sale. The disconnects and original mounting plates tend to be harder to come by, however.
The most important thing to ensure expected performance is that you maintain the positively grounded configuration of the array. Galvanically isolated SMA inverters have proven to be the simplest ? reconfigure the jumper and fuse position and then check the voltage and polarity of the array before you recommission.
If you have any difficulty finding what you need, please feel free to contact me directly.
Best Regards,
Isaac Opalinsky | Director, Training & Field Enablement
mobile 443-277-6286 | [email protected]<mailto:[email protected]>
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