question

willowfarm avatar image
willowfarm asked

Multi killed my generator?

So.... I have used VEConfig, changed settings one by one as in โ€˜generator faqโ€™ advice. (Disable UPS, enable dynamic current, weak AC)

Finally got the Victron to accept the generator on weak AC setting..... the generator seemed to overload then shut down.

Now the generator wonโ€™t start at all and is misfiring. Has it killed the generator????

Generator
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2 Answers
Matthias Lange - DE avatar image
Matthias Lange - DE answered ยท

What Multi? What generator? Rest of the System?

But I don't think a Multi can kill a generator because the Multi only takes the energy delivered by the generator.

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willowfarm avatar image willowfarm commented ยท

Multiplus II GX 3kw

Generator 720w Clarke perrol


We wanted to connect small generator until we could get bigger one.

Changed all settings accordingly.

The multi seemed to draw too much from the generator, it stopped/cut out. Now itโ€™s not starting at all.


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Matthias Lange - DE avatar image Matthias Lange - DE โ™ฆ willowfarm commented ยท

720W is not much. Even if you set the input current limit to the minimum you will overload the generator.

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willowfarm avatar image willowfarm Matthias Lange - DE โ™ฆ commented ยท

Yes it is low.... but we thought it may work with adjusted settings.


Do you know minimum Watt generator that would work?

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Matthias Lange - DE avatar image Matthias Lange - DE โ™ฆ willowfarm commented ยท

The minimum AC input current with the 3kVA MPII GX is 4A.
4A at 230V = 920W -> the generator should at least have a continuous power of 1kW.

https://www.victronenergy.com/live/multiplus_faq#generator_sizing

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willowfarm avatar image willowfarm Matthias Lange - DE โ™ฆ commented ยท

Thank you for your advice

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JohnC avatar image
JohnC answered ยท

Hi WF. If you disable PowerAssist in the Multi there is no lower limit applying to it's input acceptance. Of course then you'd have to be *very* careful how much downstream load you apply to the Multi.

Your genny should have self-protected from overload. Sounds like a warranty return..

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willowfarm avatar image willowfarm commented ยท

Hello

We decided to buy a better generator.
We got 7kw Hyundai...just connected it up.

The Multiplus is showing AC input at 230v 0W, however its still saying 'AC disconnected' - is this because our batteries are full/healthy?

Should it say 'AC diconnected'?

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Matthias Lange - DE avatar image Matthias Lange - DE โ™ฆ willowfarm commented ยท

No if AC IN is available and within the acceptable range the Multi should start charging and pass it through to the AC loads.

Take a look at your settings again and try to adjust them.

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