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Posted: 2021-06-2511:53 PM. Last Modified: 2024-03-1903:07 AM
Coil whine
Hello,
I recently bought a 3KVA smart UPS.(SRC3KUXI)
There is a faint coil whine heard when its online mode and no load connected. As soon as I turn on my workstation the pitch gets higher of the coil whine.input voltage is 200-230V with output set as 230