Text 14200, 86 rader
Skriven 2006-11-20 19:22:50 av RobertB. (1:379/45)
  Kommentar till text 14190 av Glenn Meadows (1:379/45)
Ärende: Re: UPS weirdness
=========================
From: "RobertB." <rb28@nyu.edu>

In article <4561e0f0@w3.nls.net>, "Glenn Meadows" <gmeadow@comcast.net> wrote:

> Power line Monitors have the scale expanded to show the normal operating
> range across the majority of the meter face (easier to read small changes).
> Plus, they come in a nice box housing all the "stuff", and have a 2 prong
> wall plug, so you don't have to stick the probes in the outlet.  You can set
> it on a table and just leave it plugged in all the time, and can easily move
> it from one outlet to another.

Any recommendations for an inexpensive unit?


>
> --
>
> Glenn M.
> "RobertB." <rb28@nyu.edu> wrote in message
> news:rb28-21A29F.11053420112006@w3.nls.net...
> > In article <4560c022$1@w3.nls.net>,
> > "Glenn Meadows" <gmeadow@comcast.net> wrote:
> >
> >> See if you can get a powerline monitor, that expands the 100-135 volt
> >> range
> >> to full scale, or get a Digital Volt meter, and re-wire an extension cord
> >> so
> >> you can plug it into the wall socket, and view the power line voltage
> >> next
> >> time the trim LED comes on.  Could be either low, or high.  Only way to
> >> know, is to monitor it.
> >
> > Is a power line monitor different than a multimeter? Is it somehting I
> > can pick up at Radio Shack? The old Sperry meter has different ranges of
> > measurement; the current one goes up to 250 V. But it's a little awkward
> > to use since you have to hold the probes in the wall socket and make
> > sure you make a connection.
> >
> >
> >
> >>
> >> --
> >>
> >> Glenn M.
> >> "RobertB." <rb28@nyu.edu> wrote in message
> >> news:rb28-D1FC86.14431518112006@w3.nls.net...
> >> > Any EEs out there or people who know electricity? I have two APC UPS
> >> > SmartUPs in my office, a smallish 750 VA unit attached to my G4 iMac
> >> > and
> >> > a large 1000VA unit attached to my ancient Micron and my new iMac
> >> > core2duo (Yowza!).
> >> >
> >> > Here's the deal. Previously, I used to not turn the Micron on much so I
> >> > would shut the large SmartUPS off at night (since the computer was only
> >> > on a couple of days a week at most). However, the new iMac, like all
> >> > Macs, has an Energy Saver feature, so I simply put it to sleep at
> >> > night.
> >> > Easy. When it's on, the usage light on the large SmartUPS doesn't even
> >> > go on, the machine is energy efficient. (The Micron, which has a couple
> >> > of externals attached causes it to move up one notch). So there's no
> >> > real voltage draw. OK. I noticed, twice now, that in the morning when I
> >> > come into the office, the Voltage Trim light is on, indicating high
> >> > voltage on the line. However, it only appears on one of the SmartUPS.
> >> > Both machines are in the same room and, as far as I know, connected to
> >> > the same circuit. After a while, the Trim light goes out.
> >> >
> >> > FYI, about two weeks ago, the same thing happened one night to the
> >> > 750VA
> >> > UPS. The Voltage Trim light was on for several hours, then went out. I
> >> > have no idea why it would affect one UPS and not the other, why it
> >> > seems
> >> > to happen on a regular basis, and why it would come and go. The owner
> >> > of
> >> > the building (an old tenement) installed a new boiler about six weeks
> >> > ago and I'm wondering if they did something weird. At one point this
> >> > summer they were running new cabling up the walls on all the floors,
> >> > but
> >> > I have no idea if they ever connected the stuff. I can't figure it out.
> >> > The voltage trim light just went out about 10 minutes ago. Bizarre.
> >>
> >>
>
>

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