On Tue, 2011-03-15 at 22:08 -0400, gene heskett wrote: > On Tuesday, March 15, 2011 10:06:08 PM Kirk Wallace did opine: > > > On Tue, 2011-03-15 at 11:18 -0700, Peter C. Wallace wrote: > > ... snip > > > > > A couple isolation/stepdown transformers is a good way > > > (I was going to say filament transformer but I guess not many would > > > know what that is anymore) > > > > > > > > > Peter Wallace > > > Mesa Electronics > > > > Thanks Peter, Roland, Rafael, Jon. Judging by the number of replies, the > > question was too easy. Attached is my connection plan. The scope probe > > would go to the TP's. Would I be correct in thinking that the parallel > > connections shown, give me a voltage signal, and a series connection > > would give me current? > > For voltage and phases you are correct as shown. > > Currents however will need toroid type current transformers installed so > the motor lead is threaded through the toroid core. You get a voltage out > that is proportional to the current in the motor lead. >
Dooh (hits forehead). A transformer in series with a motor lead would be a bad idea (unless designed to be there). Small toroidal's are easy and plentiful, but another time sink. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA ------------------------------------------------------------------------------ Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
