> Well, I design systems that we send out all over the world. I have various > spec numbers that indicate some rather optimistic tolerance. For example, I > have measured actual outlets in the US at 70VAC and 142VAC, which is well > outside the published tolerances. I get a lot of flack from management when > I try to use those numbers as operational limits instead of the utility > published ones. Some empirical evidence from a third party would help a lot.
70 and 142 seem more than a bit unreasonable. How long did they stay at that level? I like Jim's suggestion of asking the guys who are collecting the data. ---------- I've been using my UPS to monitor line voltage. It's got commands to read the min/max input voltage since the last time you asked. My software writes a line to the log file every 5 minutes or more often if the line voltage changes by more than 2 V. It runs about 30K per day. Mostly, things are boring: 120-125 V. Occasionally I see a glitch. I should write some code to scan the old files and collect statistics. -- These are my opinions, not necessarily my employer's. I hate spam. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
