I think Morningstar has a product that would work. Please let me know how the project goes.
Thank you, Drake Athens Electric ----- Original Message ----- From: "RE-wrenches" <re-wrenches@lists.re-wrenches.org> To: "RE-wrenches" <re-wrenches@lists.re-wrenches.org> Cc: Sent: Tue, 22 Oct 2019 12:07:45 -0400 Subject: [RE-wrenches] 600Vdc Transfer Switch Between Charge Controller and GT Inverter Hi All, I've been asked to review a GT-BBUS that was installed with a DC to AC ratio of 2.14. The system owner is frustrated b/c his 9.2-kW of PV is bottlenecked by an 80A MPPT (~4,300W). The inverter is a XW-5548 so there is a second bottleneck to overcome even if an additional CC were added. My inclination is to install a GT inverter for half the array and make a separate point of connection. I have considered adding a transfer switch on the PV conductors to allow the owner to toggle between this new GT inverter and the existing CC. I thought that having the option would be of benefit during extended outages with little sun. I'd be curious to know if anyone has had to solve a problem similar to this one and if they were able to find a suitable switch. To-date, I have not located a good transfer switch or breaker assembly with handle-tie etc... Any thoughts are greatly appreciated. -- Matt Sherald PIMBY Energy, LLC NABCEP Certified Solar PV Installer® 304-704-5943 www.getpimby.blogspot.com [1] www.getpimby.com [2] Links: ------ [1] http://www.getpimby.blogspot.com [2] http://www.getpimby.com
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