Hello, As an electrical engineer with 10 years experience working in electricity distribution systems, I doubt very much it would have anything to do with the lines company signalling system ie the system used to turn streetlights off and on and control electric hot water systems during peak demand periods. You would have experienced problems much sooner as the signalling systems are used everyday. However, it is quite possible that your ups might be reacting to others electrical equipment off the same supply (same (22k/11k/400/240VAC) transformer or that they might be problems with your electrical supply ie broken neutral etc. Do you have any AC power clocks? They are very sensitive to power quality issues because they take their timing from the 50Hz 240AC waveform. Or a fax machine? They often have a feature for reporting electrical disturbances. Unless you can record a power quality or disturbance issue, I would suspect the problem is with the UPS. Good luck, On Sunday 02 October 2005 23:01, Kyle Carter wrote:
Just an inquisitive question. My UPS seemed to go mental last night/this morning (around midnight Sat Oct 1st) flicking between battery and mains repeatedly for a few hours.. But no flickering lights or anything..
Im wondering if anyone else had something similar? Im assuming it may have been the power company doing something weird re: daylight savings?
Kyle Carter
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