On Fri, Mar 9, 2018 at 11:32 AM, Michael Torrie <[email protected]> wrote:
> At BYU we had a large-scale, line-integrated UPS system that would > adjust the power frequency to match the line frequency after line power > was restored, to prevent any power problems for the computers and other > sensitive electronics hooked to it. Not that computers are sensitive to > the line frequency. I think it had more to do with avoiding power glitches. > My understanding of AC motors is that they are always in sync with line frequency as a fundamental property. So if you suddenly change the frequency, such as by switching from UPS to utility power, the motor will make a sudden and ungraceful adjustment, possibly destroying itself in the process. Corey /* PLUG: http://plug.org, #utah on irc.freenode.net Unsubscribe: http://plug.org/mailman/options/plug Don't fear the penguin. */
