Why is the inverter making this noise ? Was always silent?

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fmj asked Oct 14, '22

Why is the inverter making this noise ? Was always silent?

Never Made this noise before since 2020

Installation…..

Since August 2022 I have this noise …

Once connected to grid noise appears …

No noise once main grid Power is off Line ….. and inverting to power the residence …..

Pls see attached video

Is this a coil whine or transformer noise ?

IMG_6572.MOV

Thanks for the help …. Advise

Multiplus-II

img-6572.mov (33.7 MiB)

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Modifications Space

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Answer 1 · 2022-10-15T09:07:56Z

nickdb answered · Oct 15, 2022 at 09:07 AM

When it is attached to the grid it will be doing things like frequency shifting for LOM detection etc, this all produces hums and other soothing sounds.

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fmj commented · Oct 16, 2022 at 05:00 PM

Thanks for your help.

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Answer 2 · 2022-10-15T17:18:16Z

fmj answered · Oct 15, 2022 at 05:18 PM

Thanks for the message.

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Answer 3 · 2022-10-16T07:21:12Z

philippem answered · Oct 16, 2022 at 07:21 AM

Hi I have the same problem, seems it is stressing a bit the inverter, mine is also getting hot. I couldn t find a solution so I take off the grid. I like the Victron products but there are many quality issues, Victron always replace them under warranty. Now I just load them at 50% and don t connect to grid. My installation is working very smoothly that way.

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fmj commented · Oct 16, 2022 at 04:59 PM

Thnks for the message and your findings …

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