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allan-silva avatar image
allan-silva asked

High DC Ripple - 3x Multiplus 2kVA and 24V lithium battery

Good day,

I have a 3x Multiplus 24V working as threephase system with 6x lithium battery 24V in parallel and a Fronius 3kW.


Nowadays the system is showing Error 60 (Battery high ripple voltage) once a day.


The wiring from batteries to inverter is ok.


When the error occurs, the battery voltage drops ~0.5Vcc.


The system have been programmed with and without ESS assistant and PV Inverter Support.


Someone else have this problem? Is there a solution?


MultiPlus Quattro Inverter ChargererrorAssistants
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Alexandra avatar image
Alexandra answered ·

@Allan Silva

Usually DC ripple is caused by

  1. a high resistance point in the battery wiring (too many fuses or too many shunts, or poor quality disconnects)
  2. undersized cabling either in installation, inside the battery or between batteries
  3. charge or discharge current of battery being exceeded.
  4. intermittent bms shutdown from bad balancing (or something related to overcharging or number 3.)

https://www.victronenergy.com/upload/documents/Wiring-Unlimited-EN.pdf

See page 12 section 2.6, there is also a good checklist on page 15.

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allan-silva avatar image allan-silva commented ·

Thanks for answering.


Have you ever seen battery with bad BMS, or bad balancing problem? What battery technology (AGM, LiFePo...)?

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