Measuring rotor winding connection is wrong use method of failure

Put the rotor under small electric fan motor test in a test in the mouth,use the turn-to-turn short circuit tester electricity,tester within the closed magnetic circuit core and rotor core has alternating magnetic flux.Multimeter is 10 v ac voltage profile,wholesalemotor.blogspot.com adjacent commutator segment and commutator segment,every piece of commutator segment,every two pieces of commutator segment,every three to every more pieces commutator segment between the voltage value.Rotor winding connection correct voltage size should electricalmotor1.blogspot.com be consistent,if you have below normal,it is possible that some components lead to reverse,with the fault of rotor winding to repair to meet again. "Little experience" Described above with a multimeter ac 10 v voltage profile measuring voltage between adjacent the commutator segment,as there are below normal,should turn the rotor position,and then look at the voltage value,so as high efficiency electric motor to avoid miscalculation.If still below normal,should be cleaned of mica slot commutator conductive material (such as charcoal powder),then test again,in order to avoid miscalculation.