Waross, that is almost the question I was trying to ask.
All our generators are wound compound, with a series and shunt field. All voltages are DC (with the exception of the AC motor spinning the DC armature) We are taught that the place where the armature windings are at 90 degrees to the field...
Brain fart..
So I know how to set the neutral. Showing a new apprentice. Explain that we place the brushes to the minimum voltage point to reduce sparking. Made a drawing showing the conductors cutting through the flux... and he asks... "How do you get voltage out if it's always set at the zero...
OK, made a mistake. Motor was from a traction elevator. Couple more pictures to offer different view
First picture shows where the shaft is attached to the flange that couples the motor to the brake.
The shaft sheared right going into the rotor. The other picture is of where the shaft goes out of the housing, and that flat end is what was attached to the rotor. It's a hydraulic elevator pump motor. As for the welding marks, have no idea. Was purchased as a new motor. Almost looks like it was...
Sorry. Was trying to post more than 1 picture at a time and the DOC was easier. https://files.engineering.com/getfile.aspx?folder=e6a2f02a-4ad6-45eb-b010-456a297b3698&file=20190930_141659.jpg
Just took apart a 1 year old Reuland 3 phase motor, 15hp, 284T Frame. Stopped working, and found the armature shaft sheared off going into rotor. Looked TOO clean, so asking if anyone can shed light on this. Tried to load 2...
