How best should 5 x 3.5 US3000 Pylontech and 10kVA MP II connected?

Question

question

ejrossouw asked Nov 27, '21

How best should 5 x 3.5 US3000 Pylontech and 10kVA MP II connected?

Hello everyone.

I have an off-grid customer who did a DIY install of 5 x 3.5 US3000 Pylontech batteries and a 10kVA MP II. He used the Pylontech 2m battery cables to the inverter and correctly followed the Pylontech connection instructions. I however advised him to rather use a suitable busbar setup and cable rated well above the 120A of the supplied Pylontechs given the high rating of the charger. He started charging his batteries at the 140A 10kVA 48V MP-II capability, because the Pylons shows he can do 185A so he took it very literally.

I much stand by my advice, but will value a sanity check from any large system installers out there.

Thank you in advance.

battery connection

1638032839735.png (7.9 KiB)

1638033606775.png (20.4 KiB)

2 |3000

Attachments: Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

Modifications Space

Node Red Space

Answer 1 · 2021-11-27T22:41:56Z

Matthias Lange - DE answered · Nov 27, 2021 at 10:41 PM

Just use two sets of the 2m connection cables.

On the first and last battery should be a positive and negative terminal available for that.

Don't cut the cables or make them exactly to the same length as the other.

screenshot-20211127-233923.jpg (206.1 KiB)

2

2 |3000

Attachments: Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

ejrossouw commented · Nov 28, 2021 at 08:32 AM

Thank you. Interestingly this was something he contemplated, but I was not sure.

0 ·

nickdb ♦♦ ejrossouw commented · Nov 28, 2021 at 08:50 AM

Same way one of mine is connected.

0 ·

question