Power Distribution Unit With Amp Meter?

Does anyone make a portable power distribution unit (PDU) that would give a
reading of the current amperage used by each circuit attached to the PDU?
Reply to
Will
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Sorry, this should have read "...of each device attached to the PDU...."
Reply to
Will
Don't know one offhand. Depending on your application, you could do something like that with an individual UPS for each device, then poll the UPS via their serial ports for that data. What's the application? Distros that monitor aggregate amperage are out there, usually as an overpriced add-on.
--Dale
Reply to
Dale Farmer
I'm trying to determine which of our servers and disk arrays use the most energy, with an eye towards possibly replacing those with more energy efficient models.
Reply to
Will
Get a number of Watts Up or Kill-A-Watt meters and plug a server into each one. Run for a while and read the average power consumption.
I doubt you can save any money by replacing a server early, but there may be other considerations. Obviously, buy the most energy-efficient machines you can when you do replace them at the end of their normal or scheduled lifetimes.
Fortunately, AMD and Intel are now talking about low-power, high-performance machines, though there's a lot of marketing double-speak you have to wade through, and lots of traps for the unwary (processor thermal design power versus box elecrical consumption, for instance).
Reply to
William P.N. Smith
The thing you also have to be wary of is power factor issues. To measuere that you need something like the FLuke model 46 (I think) power quality meter. Put that on the power line and you can see all those exciting harmonics and stuff. Power factor correction equipment may reduce your electric bill noticeably. Although your major power consumer isn't actually in the room. It's the air conditioner that is removing all the heat that the electrical power is being turned into. If you can lay your hands on on an infrared camera, using that to look for hot spots will be useful. For simple power consumption measurements, I'd just use an amp-clamp meter and a notebook to write down the power readings. Computers use surprisingly little power.
--Dale
Reply to
Dale Farmer
The Watts Up measures power factor, and the Pro will measure and log it.
Reply to
William P.N. Smith
Are you distributing AC or DC power? Bill Kaszeta Photovoltaic Resources Int'l Tempe Arizona USA snipped-for-privacy@pvri-removethis.biz
Reply to
Bill Kaszeta / Photovoltaic Resources
"Bill Kaszeta / Photovoltaic Resources" wrote in message news: snipped-for-privacy@news.west.earthlink.net...
Maybe 50 servers all taking 125V AC.
But I would use a portable PDU of this type in many similar applications, taking it to individual rooms where I have some device that I suspect might be taking up a lot of CPU.
Reply to
Will
Tut writes:
Willy, I see your much more polite on the EE news group--and what ever happened to your normal "rec.outdoors.rv-travel" signature....
Will Sill The Curmudgen of Sill Hill
.....and sign off..."Poster Requests His Insults Removed in 6 Days"
Tut
Reply to
cnctutwiler
I've never read, let alone posted, to rec.outdoors.rv-travel. Last time I checked there were at least 15 million people in the U.S. alone with the first name Will. No doubt some are rude. Don't hold it against everyone with the same first name, please. :)
Reply to
Will
15 million? Sounds high.
Reply to
operator jay
Just popping in to remind that this topic is WAY OFF TOPIC and according to unwritten RORT politeness, should be labeled as such.
IMHO 8^)
Jan Eric....the Orme "Always drink upstream from the herd."
Reply to
JanOrme99
Kill-A-Watt can display instantaneous p.f., watts (implying p.f.), and va, besides summation of kva-h since plug-in and time-duration since that.
J
Reply to
barry
KaW only displays kWh and time not kVAh. Too bad for inverters and other enery generators
Reply to
Solar Flare

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