[RFI] UPS recommendations -which Tripp Lite models

[Jim Brown]

On 8/23/2021 9:04 PM, Hugo Loranger wrote:
> I had 3 Cyberpower CP1500PFCLCD and in operation I hear a lot of noise.
> When they are on standby, they are silent but when the current cuts off the noise increases drastically.
> I have a switch where the 2 UPS are connected and when it is off it is obvious that the noise comes from the 2 ups ...

Hi Hugo,

I have not evaluated them when the power is down and they are supplying 
power to their loads. I have serious common mode chokes on their power 
cables, as I do with all potential noise sources.

73, Jim K9YC