[RE-wrenches] 600Vdc Transfer Switch Between Charge Controller and GT Inverter

[Dave Angelini Offgrid Solar]

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
offgridsolar at sti.net [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]    


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