APC UPS SRT3000XLI

[BillP]

Hello

Problem with the exclusion of SRT3000XLI

When plugged in and want to turn it off by
because I do not need a trigger button there is no option to turn off!
I have to pull the plug every time.
When it is plugged in and the electricity grid and is battery
then she pressed a trigger button offers me to turn it off but not until it is in contact !?
Very uncomfortable was obtained in this way, so I put him coupler with button before ups.
I have a second question!
On ups from the back when his works include inverter and output current of contacts began publishing strange noise, something kago buzzing like chattering quietly and very quickly winding bodies! He can hear the side of smart slot perhaps a span inside. Is this normal?
regards