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Simon Bendall avatar image
Simon Bendall asked

Multiplus current/power reading incorrect

Hi everyone.

I've been building a custom remote control interface for my system using modbus, but certain information isn't accurate using this, such as the daily solar yield value of the mppt or the inverter phase power readings. My solution to this was to query the systems via dbus instead. This all works fine, but has highlighted another potential problem.


The power reading I get from the Multiplus via dbus matches what my venus displays, right now ~11W, with output power of 230V and current of 0.1A. Dbus also shows similar readings, allowing for rounding. The problem is, 230V * 0.1A isn't 11W, it's 23W. So, which figure is incorrect, the inverter phase output current or the inverter phase power?


I know it seems like a small problem, but at the moment I'm on limited input power, so every watt counts. I also want to know that my configuration and controls all work for when I scale up my inputs and outputs.


Any ideas would be greatly appreciated.

Simon

inverter current draw
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1 Answer
Alexandra avatar image
Alexandra answered ·

@Simon Bendall

https://www.victronenergy.com/live/ccgx:ccgx_faq

Q6: I see incorrect current (amps) or power readings on my CCGX


If you would like an accurate reading of what your consumption is you need a shunt based system like the bmv to know accurately what the system is consuming.

https://www.victronenergy.com/battery-monitors/bmv-700
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