26.88 kWp Single Phase ESS UK

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1

Here is a project designed and installed by ourselves at AspeyEnergy. The customer was end of line and suffered from frequent power cuts so was looking for a system that could provide backup.

64 x 420w REC Pure Alpha R Black Panels
2 x SmartSolar MPPT RS 450/200 Charge Controllers
1 x Quattro 48/8000/200
2 x 15.4kWh BYD LVL

Last year the solar generated 5202 kWh of energy resulting in the customer being 64% self sufficient for the year. It also provided backup for his house for the 16 power cuts he experienced.

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2 Likes
2

Very clean installation, but why only use one disconnect on the triple knife disconnect for the Quattro?

3

Thank you. So that each of the Victron pieces of kit can be isolated separately. Also NH1 & NH2 holders for different size fuses.

4

Yes I know but there are unipolar NH2s, like your NH1s. From my point of view you could have taken advantage of this to protect the negative cable… Too bad

5

We do a fair few 3 phase and parallel units where your not supposed to fuse the negative. In this setup we could of fused it. However the fuse on the + is sufficient. Certainly something to bare in mind on the next one.

6

I allowed myself this reflection because in France the 2 poles must OBLIGATORILY have a disconnector

7

And it is recommended by Victron to leave the negative pole directly connected. Because of potential bonding maybe ?