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Hans avatar image
Hans asked

Best practice connect: Pylontech, MPPT VE.can, Quattro(140A), Cerbo GX

Whats the recommended way to connect these?

My thoughts atm are:

MPPT directly to Pylontech, VE.can to Cerbo gx

Pylontech to Quattro and ve.bms to Cerbo gx.

Quattro via VE.bus to Cerbo gx (get error see other topic)

Any suggestions?



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2 Answers
Hans avatar image
Hans answered ·

In the end I used Bush bars as this is recommended although I never was quite clear why exactly even in this specific case.

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jonofe avatar image jonofe commented ·

How would you manage the recommended battery capacity and the right sizing of DC cables without a busbar? Do you operate a Quattro with 140A with only one battery and one 25mm2 Pylontech cable?

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matt1309 avatar image
matt1309 answered ·

Hi @Hans

I personally go all to the GX device, but I think this link explains it for you:

The pylontech to quattro might be the cause of your other errors.

Victron & Pylontech UP2500, US2000, US3000, US2000C, US3000C, US5000, US5000B, US5000C, Pelio-L, UP5000, Phantom-S, Force-L1 & L2 [Victron Energy]


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Hans avatar image Hans commented ·
ah yes thank you I was wondering if a bushbar is needed a pylontech has 2 - and 2 + i was thinking 1 to Quattro and one to the MPPT.


All communication is going trough cerbo gx atm


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matt1309 avatar image matt1309 Hans commented ·

Oohh sorry i assumed communication.

I imagine you can get away with that however I believe most people use additional busbars rather than using pylontech essentially as the busbar.

I was scrolling through this to see if there was a concrete example, couldnt spot anything but might be useful

Wiring Unlimited (victronenergy.com)



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Alexandra avatar image Alexandra ♦ matt1309 commented ·

@matt1309

Use a bus bar.

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Hans avatar image Hans Alexandra ♦ commented ·
Why?
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