[Pc_Support] UPS AVR, appliances, activates?

[Jason Boxman]

On Saturday 10 June 2006 18:49, patrick wrote:
> Jason Boxman wrote:
> >I hadn't seen this before, but where I live now, apparently, my UPS' AVR
> > kicks in when I'm running several appliances simultaneously that draw a
> > lot of power.  (The UPS makes a loud hum, which it only does under the
> > above circumstance, so I am assuming it is AVR.)
> >
> >Is there any particular reason why this happens?  Could it be the wiring? 
> > I imagine the washer and drier are on different circuits than my
> > equipment upstairs.
> >
> >Thanks.
>
> The UPS senses the AC voltage and kicks in at somewhere around 105 VAC!
> Appliances with large motors and cooling equipment, refrigerators,
> freezers, draw  larger current upon start-up.  The voltage sags from the
> normal 115, 117,120, (I average 125VAC in Central Florida - but, I get
> about 8 sags each day!).

But in my case, the UPS never actually trips.  It just makes that loud humming 
noise it tends to make when it's charging or discharging.  I only do the wash 
on weekends on this symptom only occurs on the weekends, so I assume the 
increased power usage is the trigger.  It's strange, though.

-- 

Jason Boxman
http://edseek.com/ - Linux and FOSS stuff