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

[drake.chamberlin at redwoodalliance.org]

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 at lists.re-wrenches.org>

To:
"RE-wrenches" <re-wrenches at 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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