On 16 July 2014 00:23, Leonardo Marsaglia <[email protected]> wrote: > I have to mention that the first day this problem started we had a problem > with one phase in our workshop. The phase was still there, but it couldn't > be detected by a multimeter, anyway the machines were working ok. The > problem was a faulty lamp that was almost shorted. A strange case, in fact > when I used the multimeter to check that phase it showed 0 volts with the > tip of the multimeter in contact, and when I retired the tip, for a > fraction of a second the voltage raised in the multimeter and then droppend > again.
I think you might need to check the state of your power circuit. I would not expect a lamp to pull down an entire phase without a great deal of heat and trouble, and the multimeter results sound very strange indeed. It seems to me that you might have a weak phase on the supply, and that all the other motors in the shop are acting as a (not very good) rotary phase connverter to synthesise the missing phase. If you turn off every motor in the shop, what do the phases look like? -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ Want fast and easy access to all the code in your enterprise? Index and search up to 200,000 lines of code with a free copy of Black Duck Code Sight - the same software that powers the world's largest code search on Ohloh, the Black Duck Open Hub! Try it now. http://p.sf.net/sfu/bds _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
