Back ups short brrt sound after pressing power button

[Anonymous user]

When i press the power button of the ups, it does a self check and then a short brrrt sound happens.. exactly like in this video https://youtu.be/kDUNwIcDiVI i just wanna know if this is normal or not and if i should wait for it to pass before using my application. 

[BillP]

Hi Dhruv,

This sounds like the inverter initializing during the Online Battery Test. I would say this is normal, however it is a bit louder than I would expect. This may be due to the position of the microphone?

SecretSquirrel

[Anonymous user · Accepted solution]

i recorded using phone so the microphone was where the camera was