[Paul Haese]

Now that I have a remote system I thought it was time to get an uninterrupted power supply (UPS).

I spent some time looking around and came up with a Eaton 3000va unit with a delivery of 2700watts.

Today whilst commissioning it I noticed that the system was using about 165w with the system fully energised including the roof and the camera holding the temp at -25c. It then said below that it was good for 89 minutes.

Now my question is this, why would a system of less than 1 kw prevent the ups lasting for 3 hours? What am I missing here?

Just for more info.
Mount PME
Camera QSI
MHP powering camera, rotator, dew heater and focusor via a regulated power supply of 13.8 volts and 20 amp supply.
Computer - desktop with 400 watt power supply.
Roof controller by scope dome.
Monitor ( that would be off)
weather sensor AAG (it has a heater too)

Thoughts?