I just sent them an email with a heads-up.
Thanks for the tip.
did you install an âenfluriâ meter, like a Victron VM-3P75CT ?
No, everything sits behind the victrons, so they provide their own internal measurements, for which they are c10/26 certified.
hey @bernieke: Did you have the inspection today?
Yes, I need to increase my fuses to 200A. Which also means bigger fuse holders (NH1 instead of NH00) and a new enclosure for them and new bus bar.
But everything else was okay. The inspector even put the inspection âon holdâ so I wouldnât need to pay a second time.
Great !
What company did you use?
Vincotte, they were the cheapest as they have an offer for battery + solar + ev charger for 180 euro.
Is it because Victron advises 200A for a Multiplus 5000/48?
Donât you then have to go to 70mm² cables?
Yes, he looked in the manual, and the manual recommends 200A, so thatâs what he wants to see.
The 50mm2 is rated for 195A at 40C in open air, and the cable is rated up to 90C, so that seems alright to me.
I will however need to exchange my NH00 holders for NH1 holders (even the NH0 3P holder only goes up to 160A), as well as a new enclosure big enough to fit them, and make room for that enclosure. And off course the NH1 use M10 connections, so Iâll need to put on new terminal lugs as well.
So once it all comes in Iâll have another weekend working on that.
Where did you find those certificates? I canât find one for the Yixiang box (only one with product name âprotection boardâ and that doesnât inspire much confidence). I have EVE MB31 cells, and also for those Iâm not able to find (correct) certificates; the supplier (nkon) neither. The JK BMS is hopefully ok with this document. Zonnepanelensuper also donât list any certificate, Iâll try calling them and ask directly.
Anyways, if you assemble the cells yourself, technically the whole system needs its own CE certificate; which only you can make and take responsibility for; not completely impossible imo, but very difficult and possibly very costly (if you do testing) to do it 100% correct. If you donât intend to sell such battery packs, I donât see any benefit in doing so, especially if the sub components do have conformity, since any fault claim will end up at your desk anyway.
But with that weâve entered legal/insurance hot water.
I got them from zonnepanelensuper, but I guess chances you get this box AREI certified are extremely slim.
SGS test report EVE MB31 accucellen 23-08-2024.pdf (787,3 KB)
CE certificaat Yixiang accubehuizing 16kWh.pdf (1,5 MB)
CE certificaat JK BMS.pdf (999,6 KB)
Only the CE certificaat JK BMS is an actual CE certificate, the others are just test reports which are interesting, but of no legal use for the AREI inspector. AFAIK they require: a CE certificate/sticker + serial number on the outside of your battery box and additionally (if itâs a though one) same stuff for your individual battery cells.
Although I have heard from most people that they got their DIY batteries approved, but yeah, no guarantees and dependent on the inspector itself.
Yes, I need to increase my fuses to 200A. Which also means bigger fuse holders (NH1 instead of NH00) and a new enclosure for them and new bus bar.
But everything else was okay. The inspector even put the inspection âon holdâ so I wouldnât need to pay a second time.
Hmm, that seems a little strange to me. A fuse is the to protect you (and the cables) and should be the weakest link in the chain. If you choose to have it weaker than the maximum recommended strength, the only risk is a blown fuse. (of course the interrupt rating of the fuses must be high enough)
For example, I have a cable going to my shed (5G10mm²) that - with 230V AC - may be fused with 63A according to the AREI. I have chosen a fuse of 32A (our grid connection is 32A at the moment, so no need in going bigger).
It is a maximum or recommended value for such a fuse, but lower than the maximum should be ok. I would love to know the reasoning of the inspector for this.
I have the same reasoning. But I didnât want to antagonize the guy and question him on it. I think he and the colleague he called just went with victrons recommendation plus implementations theyâve seen in the past.