[RE-wrenches] large(ish) AC coupled battery backup

[Darryl Thayer]

the 2 each 200 Amp panels is to overcome the 42 circuit limit in one
panel.  must be a big house.  This sounds like a whole house backup.  you
will need a transfer switch much like a whole house generator switch unless
your customer needs TOU or some other grid service.

For the AC coupled paralleled Radians or XW6848 and have a turn off for one
or both of the SB inverters based on battery voltage (SOC).

On Fri, May 3, 2019 at 7:58 AM Dave Tedeyan <dtedeyan at taitem.com> wrote:

> Hi All,
>
> Does anyone have a good recommendation for an AC coupled energy storage
> solution for someone who has a 27.6kw array with two SE11400A-US inverters?
> The output of one of those inverters is more than a Sonnen or Radian can
> handle (which is what I am most familiar with).
> I am not sure yet whether this will be a whole home backup or just a
> subset of their loads, but they have two 200A panels on a single 200A
> service.
>
> Thanks,
> Dave
>
> *Dave Tedeyan, PE*
> Senior Engineer | Taitem Engineering, PC
>
> 110 South Albany Street | Ithaca, NY 14850
> o. *607.277.1118 x121*  f. 607.277.2119
> www.taitem.com
>
> Solar • Sustainability • Energy • Design
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