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Hannes Swart avatar image
Hannes Swart asked

Victron reading overvoltage

I have an off-grid system running 3 x 5kva Victron quatros, a freedom one battery 2 x mppt.s and a 30 kva generator.

My question is that when the battery goes down to 25% the generator kicks in automatically and is then supposed to run the house and charge the battery, the problem I'm having is that the inverter reads the input on line 1 as over 250v and therefore doesn't charge the battery.

I have put in a new voltage regulator on the generator but still have this issue, any suggestions.

voltage
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Hannes Swart avatar image Hannes Swart commented ·

photo-2024-03-07-08-03-54-002.jpgImageThis is whats happening Caption

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delf67 avatar image
delf67 answered ·

Have you put a meter on L1-N on the generator out? Is it really 285V?

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Hannes Swart avatar image Hannes Swart commented ·
I have not done that so will check tomorrow, but surely the av regulator should sort that?
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Hannes Swart avatar image Hannes Swart commented ·
The voltage was tested and is 234V output, the system now gave me a Phase Rotation warning and shut off?
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Alex Pescaru avatar image
Alex Pescaru answered ·

It's possible that the Quatros's "voltmeter" to not properly filter the generator's AC harmonics and therefore to also take them in a small measure into account. Hence the increased voltage.

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Hannes Swart avatar image Hannes Swart commented ·
Tested the v coming from the generator, all fine, so will have to replace the inverter. Luckily I bought a spare
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