Coil rapid detection method
Simple method: in the case of three phase wires suspended disconnect without a link, the motor idling by hand should have no resistance, any two phase wires short circuit (short), the motor has obvious intermittent resistance, and the resistance is consistent that the motor you use megohm meter measurement ah, you first disconnect the fan connector power line, and then the megohm meter line connected to the fan wire head, the other is the ground wire, You connect to the metal case of the fan, and then shake the hand crank, observe the watch hand, above 2 megohm that the motor is good. Remember to measure each line.