As I announced at the end of my last video, I spent this sunday changing my System to its new 24V configuration and also changed the cells layout as you can see
The New interesting feature of my Energy Storage System is these 3 Remote Controlled Grid Tie Inverters ...
Long test of the New system
The New interesting feature of my Energy Storage System is these 3 Remote Controlled Grid Tie Inverters ...
Long test of the New system
Following are all the transition pictures:
Disassembling the 48V battery pack
Testing new layout
That one would use less space on the floor and still give me full access to individual cells to monitor voltage once in a while
What took a long time was polishing (with sandpaper) the cupper bars linking the cells together: they have to be exempt of oxydation to conduct current well
Each time a group of 4 cells was finished (4 cells in parallel) I would connect it to the string (8 groups in series)
A 100A breaker is placed at mid-pack (on the right)
Battery pack fully assembled, Tyco Kilovac contactor bolted to the positive terminal, DC-DC 24V to 12V converter and dual relay programmable voltmeter connected
Now time to install the 3 Grid Tie Inverters I had in stock from previous tests (bottom to top: SUN 250G, SUN25G, SUN 300G)
And the positive terminals of the GTIs are connected to the switched 24V from the Kilovac contactor
The lower voltage limit (cut-off) on the voltmeter has been changed from 48V to 24V
I brought Wattson to see the effect of this New Energy Storage System on my home power consumption
I can now control my Power Supply to the grid with the remote while I am upstairs or doing something else
Short test after mounting everything
In the morning light
The remote control and the 3 controlled outlets / sockets
Top view
Next setp tonight: I will be adding a small relay/contactor for the charger side; My new 24V charger (10A) is on its way from China and will arrive soon hopefully ...
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