Victron Multiplus-II GX current transformer with voltage stabilizer

Q&A and troubleshooting
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1

Hello everyone!

I have a Victron Multiplus-II 48/5000/70-50 GX model.

Given that I often have input voltage even lower than my device supports (<187V), I was wondering if I’ll purchase the Victron Current Transformer 100A:50mA for MultiPlus-II, and I’ll put a voltage stabilizer in front of the inverter with the current transofmer attached to the stabilizer’s input, can I use this external sensor to limit the input current, so that my 10A circuit breaker won’t go open?

Or because of the discrepancy between the signal from the current transformer (lower voltage, higher current) that will be effectively measuring grid, and the actual input going into the Victron inverter (normal voltage, but higher than from the sensor, and lower actual current), and potential difference in the sine wave phases, the inverter may go crazy, and it won’t work?

I understand the obvious solution to limit the input current, taking into account the actual voltage of the grid, using its ratio to the normal voltage as a coefficient to lower the input current to less than 10A, but I am looking for a solution that will work automatically at the maximum possible efficiency without continuous manual interference. Because sometimes the voltage goes back to normal, and in that case, it doesn’t make sense to use a lower input current than usual.

2

This should work. The internal current sensor is disconnected or ignored when the external sensor is used.you may need to pay attention to the phase of the current signal, however, there should be no phase change through a transformer type voltage compensator.

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3

In my case, it’ll be an inverter voltage stabilizer. I doubt it keeps phases in sync. So to be safe, I’ll avoid using the external current sensor.

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