Aloha amigos y amigas, Those of you who have been SunPower dealers over the years know that the early style SPR mods required a positive grounding in order to operate properly as far as produce max power. As in, without being positively grounded, a surface polarization occurs which has a significant detrimental effect on the array's output.
As the transformer-based inverters (SMA, PVP, Xantrex, etc.) have been failing over the years and the supply of new-in-the-box old stock and refurbished old-style models dwindling, I've been waiting not so patiently for someone somewhere to offer a Potential Induced Degradation (PID) device to be readily available to be used between the pre-Maxeon SPR mods and a new transformerless inverter (e.g., SMA SB US-41). Looks like that day has arrived. iLumen in Belgium is now producing such a device and is U.L. listed. Attached is the spec sheet. I've been in touch with iLumen and have confirmed that if one purchases a minimum of (12), they'll cover the shipping. The cost for the outdoor model (IP65) is about $700 considering the euro to dollar exchange rate...again assuming no shipping cost. Less, than (12), assume a not insignificant adder to ship. If you're interested in contacting iLumen, contact me offlist. Aloha, marco
PIDbox-Mini-Indoor-Outdoor-EN.pdf
Description: Adobe PDF document
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