You and the client lose the ability to monitor it all in one place do
you not?
Dave Angelini Offgrid Solar
"we go where powerlines don't"
[1]https://offgridsolar1.com/ [2] [1]
e-mail offgridso...@sti.net
text 209 813 0060
On 2024-06-29 4:48 pm, Kirk Herander via RE-wrenches wrote:
All,
I'm wondering if there are any precautions if charging a Fortress
Evault LFP bank using 1 or more OB charge controllers, in tandem with
an Envy inverter PV input.
I know it will have to be programmed differently, and it will be open
loop, no CC control from the BMU,.
This is a net metered system using a Fortress 12 kw inverter. The total
PV input of the inverter is 21 kw. Max sell back is 12 kw, while
charging batteries at 6 kw.
My issue is the customer has his heart set on maxing out the roof
capacity at 25 kw. And I don't really need to add a second inverter for
critical loads, Only to increase integrated DC-coupled PV capacity.
So I feasibly put part of the array on external charge controller(s) ,
open-looped, and the remainder on a single 12kw Envy inverter.
A second inverter also increases the AC capacity, and as a result,
involves a more comprehensive review for net metering approval in
Vermont (new trigger for additional review is greater than 15 kw AC)..
--
Kirk Herander / kirkh@vermont.solar
Owner|Principal, VT Solar, LLC
_Celebrating our 33st Anniversary 1991-2024!!_
dba Vermont Solar Engineering
802.559.1225
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