Miniature AC power grid substations -- part 4 (manual trip demo) 

+Yacine Yassine We had to build this ourselves -- no one sells anything like it on the scale that we needed for teaching at BTC.

+Yacine Yassine I've uploaded all the documentation for this system we built, on the "Socratic Instrumentation" website. Navigate to the "Hardware and Software" page of this site and go to the very bottom of that page. A "tar" archive file containing all the design documents is available for free download there.

+tonykuphaldt thanx very helpfull