Le dimanche 24 janvier 2010, [email protected] a écrit : > > so, this is not a very nut specific question, but i have no idea where this > question is better placed, as i think HERE are the real UPS experts :)
Cannot tell for all UPSes and I'm no expert, but an online (double-conversion) UPS should eat quite a lot power for itself, where an offline or line- interactive UPS should only eat, when AC is present, what's necessary for the battery charger part to charge the battery and maintain it charged periodically - plus what the UPS uses for its own driving logic. I've bought past week an EATON Ellipse Max 600 which is line-interactive, and I just purchased yesterday a plug with an LCD display that displays instant and cumulated power drawn from the plug. I've connected my Ellipse Max 600 UPS thru it so the plug displays on its LCD the overall power drawn by the UPS and everything connected to it. According to the plug's manual, it's supposedly accurate enough to display every eaten Watt. To answer your question I just turned off every equipment connected to the UPS, only letting the UPS itself powered and powering its outlets. The counter LCD plug then displays "Zero Watt" drawn. But the UPS battery is currently 100% charged. It surely uses some power to maintain it charged from time to time... Also the UPS case doesn't emit any noticeable heat or doesn't get even warm when running on AC power, so at least I can say there's surely not much power being lost into heat... -- Michel Bouissou <[email protected]> OpenPGP ID 0xEB04D09C Et si au dernier chapitre nous découvrions que la solution n'existe pas ? -- Hubert Reeves _______________________________________________ Nut-upsuser mailing list [email protected] http://lists.alioth.debian.org/mailman/listinfo/nut-upsuser
