question

iromeo avatar image

Quattro drawing less power from grid

After almost 3 years, I finally have grid power.

For some reason, it's weak voltage (~185v) but i'll take that over a noisy genset.

Because I can't feed in, i've connected the line to AC1. I've raised the limit to 20Apms, but it acts very weird - sometimes it goes up to 3kw drawn from the grid, sometimes it's ~1.5kw, but usually stays around 2-2.5kw.

I've tried with all 3 phases and it acts the same.


I understand that I am at the end of a very long line so the voltage is now great, but I don't see why the quattro can't pull more amps from the grid? Any what's really strange it's fluctuating... acin1.png

grid
acin1.png (31.0 KiB)
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3 Answers
Paul B avatar image
Paul B answered ·

you are very close to the min voltage allowed 180 volts so the quattro will more than likely be reducing the draw to keep the voltage above the min AC low disconnect cutoff

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1607479192672.png (4.2 KiB)
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That's what I thought, but this morning I had ~205v on grid and it still no go and pull more within the Input Current Limit (which at 20A should go up to 4kwh at 205v).


Still less than 24h since I got grid power so plenty of time to experiment with :)


Thanks Paul !

Daniël Boekel (Victron Energy Staff) avatar image
Daniël Boekel (Victron Energy Staff) answered ·

Hi @iRomeo

what settings have you used in the Quattro? are you running any assistants?

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dgnevans avatar image
dgnevans answered ·

When you have such low voltage you need to configure your Multi as if the input is a generator to maximise your power. Have a look at this document and see if these settings will help resolve your issue. Even though your voltage is higher it may not sustain the current you are looking at without the voltage dropping.

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