question

Prince Mthembu avatar image
Prince Mthembu asked

Multiplies 2 48/10000 Humming noise

This Unit came into my RMA centre with an unusual sound when Mains power is introduced to charge the battery and run th

e loads.


I then replaced its Mains plus Control PCBA with a new one and tested the unit, it seemed fine.


Now the client just sent me a Clip of the inverter with mains power on and the system is making a humming sound . This time a bit loud.

Is this normal?

Multiplus-II
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1 Answer
Rob Duthie avatar image
Rob Duthie answered ·

Hi

Depending on what loads there are on the cicrcuits it can hum, as this is a low frequency inverter with a very large transformer it will hum from time to time.

Regards

Rob D

NZ

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