The real limit here is the sell on xw5548 and not the charge controller as the op knows. Not hard to add a second mppt of any kind. Matt's idea of a grid tie inverter is a good choice or add a second xw/mppt and keep all the comms on the same xanbus. Dave Angelini Offgrid Solar "we go where powerlines don't" http://members.sti.net/offgridsolar/ [1] e-mail [email protected] [2] text 209 813 0060
On Wed, 23 Oct 2019 09:40:01 -0700, Jeff Clearwater wrote: Hey Matt, See Morningstar's TS-MPPT-60-600V-48-DB-TR https://www.morningstarcorp.com/products/tristar-mppt-600v/ [3] Hope that helps! Jeff ~~~~~~~~~~~ Jeff Clearwater Village Power Design linkedin [4] www.villagepowerdesign.com [5] cell - 413-559-9763 ~~~~~~~~~~~~~~~~~~~~~~~ Matt Sherald wrote on 10/22/19 9:07 AM: 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(R) 304-704-5943 www.getpimby.blogspot.com [6] www.getpimby.com [7] _______________________________________________ List sponsored by Redwood Alliance List Address: [email protected] [8] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org [9] List-Archive: http://www.mail-archive.com/[email protected]/maillist.html [10] List rules font-size: inherit; padding: 0px; color: #505050;">413-559-9763 ~~~~~~~~~~~~~~~~~~~~~~~ -- Links: ------ [1] http://members.sti.net/offgridsolar/ [2] mailto:[email protected] [3] https://www.morningstarcorp.com/products/tristar-mppt-600v/ [4] https://www.linkedin.com/in/jeff-clearwater-0622a312/ [5] http://www.villagepowerdesign.com [6] http://www.getpimby.blogspot.com [7] http://www.getpimby.com [8] mailto:[email protected] [9] http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org [10] http://www.mail-archive.com/[email protected]/maillist.html [11] http://www.re-wrenches.org/etiquette.htm [12] http://www.members.re-wrenches.org [13] https://www.linkedin.com/in/jeff-clearwater-0622a312/ [14] http://www.villagepowerdesign.com
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