2007-10-18 20:30:50 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
Because if the Phases are not balanced then it will run erratically, I assume you mean 3 phase electric motors, for engines it is the crankshaft that has to be balanced, otherwise you will get excessive vibration.
2007-10-18 20:44:08 · answer #1 · answered by J I H 7 · 0⤊ 0⤋
Assume you are talking of 3 phase motors here. Yes, check the phase balance with bridge meter, must be balanced. Ever driven a 4 cylinder car on 3 cylinders???? same thing.
For the same reason, maybe you have heard of a "Drop Test" on a wound armature, here you apply a voltage to opposite commutator segments, then check the voltage Drop between adjacent segments. Should all be the same, else you have a faulty winding on the armature, and it will run rough if at all.
2007-10-18 20:48:50 · answer #2 · answered by johncob 5 · 0⤊ 0⤋
motor widings could be burnt , if Phase sensitive .
2007-10-18 20:49:05 · answer #3 · answered by Naaraayanan 3 · 0⤊ 0⤋
http://www.aps.anl.gov/aod/bcda/hardware/motion_control_stds/phases.html
2007-10-18 20:38:26 · answer #4 · answered by Don M 7 · 0⤊ 0⤋