We have used a few of the Genasun up converters on 48V golf carts. They have worked flawlessly.
Larry Crutcher Starlight Solar Power Systems On Apr 13, 2021, at 10:13 AM, Alex MeVay <a...@sunforgellc.com> wrote: Hi Jason, et al., Applications in our size range don't come up too often on this list, so I've been mostly an appreciative lurker, but I'd like to introduce myself as the contact for Genasun and Blue Sky Energy, (and the engineer behind the GVB-8 controller in question). To address a few of the questions that have been asked, the GVB-8 can be programmed at the factory with any custom charge profile desired if none of the off-the-shelf options are a good match. Efficiency at ~48V nominal is >98% over most of the power range, and the controllers employ true MPPT, so no configuration is necessary for different panels. As mentioned, 10A Imp input is on the high side for the GVB. Most Genasun controllers were designed when PV was expensive and panels were smaller. Although they do have current limits and thermal rollback for self-protection, running continuously at the standard current limit would be hard on the electronics. Panels have grown, and there is more interest in PV-heavy installations. As we redesign and re-qualify our controllers, we have developed a few workarounds. The GVB-8 can be ordered with the LOWCURLIM (low current limit) firmware option, which limits the input current to about the rated 8A, allowing use with oversize panels, such as the 420W panel in question. Separately, thank you all for the expertise you share on this list. I've learned a lot about installation and code issues for small (and large) solar, and it's given me a great appreciation for the challenges you face trying to integrate all the various pieces of equipment to give your customers a good experience. Regards, Alex MeVay Genasun * Blue Sky Energy * http://sunforgellc.com _______________________________________________ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org There are two list archives for searching. When one doesn't work, try the other: https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: http://www.re-wrenches.org/etiquette.htm Check out or update participant bios: http://www.members.re-wrenches.org
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