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
WS 1 has a corsair ax1200i psu
WS2 has a corsair vs550 psu
Total load is under 600W
Video link https://1drv.ms/v/s!Ap3ybARAqOOsgZ03sf6U-ztNM5dYxA
Please help
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discussion :