[RE-wrenches] Need a hand with Sunny Island/Sunny boy AC couple

[Ray Walters]

What is the array size vs the battery size?  Sounds like a big array on 
a small battery for the voltage to go that high that fast.

Ray
Remote Solar

On 10/21/2023 5:46 PM, William Miller via RE-wrenches wrote:
> Friends:
>
> I’m kinda stuck on a project setting up a SI/SB AC coupled system off 
> grid. When the SB inverters ramp up the battery voltage jumps to 69 
> pretty quickly and the system shuts off.
>
> I checked the mini-grid frequency and it does ramp up to about 62+ but 
> apparently not soon enough to curtail charging. I shut off the SBs for 
> now and we can rely on generator.
>
> Any advice via email or a phone call would be appreciated.  SMA can be 
> less than helpful, especially for systems with lithium batteries.
>
> Thanks in advance.
>
> William Miller
> Miller Solar.com
> 805-438-5600
> www.millersolar.com <http://www.millersolar.com>
>
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