Sorry for top posting. I have an apc 1300xs that has the same info a kill-a-watt has. Apcupsd will output that info on the command line. You'd have to poll + parse, but that gets it into the computer for less then $100.
I've used apc powerchute in the past to get info also. There was a daemon that could log the voltage, amps, and temp sensors. I have scripts somewhere that will gnuplot it. On 6/16/08, Curtis Sandoval <[EMAIL PROTECTED]> wrote: > All, > > I have my key systems at home on three UPS battery backups, two TrippLite > 900s and a CyberPower 675, all with USB ports for notifying the protected > systems of a power failure. I have two questions related to this: > > Is there a way, using these or other UPS units, to constantly monitor > input line voltage and length of outages? I recently had three outages > within a week and they seem to have been preceded each time by a few hours > of low input voltage (112v-114v) but I'd like to verify that and/or possibly > preemptively power down noncritical systems to extend the length of battery > coverage. Power quality monitoring would be nice, but my searches seemed to > indicate that quality monitoring is much more expensive, and I could > find nothing specifically saying that a UPS or quality monitor would report > real-time to a computer (specifically SUSE 10.2 or Ubuntu 8.04). > > Also, is there a way to monitor the power draw of a set of devices (say, > plugged into the same power strip and monitor the total) or individual > device for the purposes of capacity planning for UPS units, akin to a > Kill-a-watt device but with some sort of ability to report its data to a > desktop? I have noticed a surprisingly large difference in how long two > identical UPS units will last with seemingly similar device loads and would > like to be able to determine how large a unit I would need to provide a > certain amount of time of backup based on my measurements of average length > of (and time between) outages, factoring in recharge times at a given input > voltage. > > I have been looking at getting some new or larger UPS units, and I've > noticed there is a nonlinear relationship between price and capacity, which > makes me wonder why a person would not buy two or more smaller units and > daisy-chain them to get higher capacity and redundancy. > > Thanks. > -- Sent from Gmail for mobile | mobile.google.com _______________________________________________ gnhlug-discuss mailing list gnhlug-discuss@mail.gnhlug.org http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss/