Single phase motors, measuring with a multimeter, how to distinguish between the main and secondary windings?
The multimeter is also called the multiplex table, the multimeter, the three meter, the multiplication table and so on. It is an indispensable measuring instrument in the electric power and electronic departments. It is mainly used to measure the voltage, current and resistance. The multimeter is divided into a pointer multimeter and a digital multimeter according to the display mode. Is a multifunctional measuring instrument, multi range, general multimeter can measure DC current, DC voltage, AC current, AC voltage, resistance and audio level, some parameters can also be measured AC current, capacitance, inductance and semiconductor.
General with the direct measurement of DC resistance ohmic profile.1 three wire three wire resistance found in the largest two lines, that don't a public line! 2 then the two lines respectively and the common line DC resistance. The resistance of small one is directly connected with the main winding line!
Single phase motors. Measure how to distinguish primary and secondary winding by universal meter:The multimeter to measure the winding resistance, to determine the primary and secondary windings according to the winding resistance of single-phase motor generally has 3 terminals, respectively, is a public terminal, the main winding, and a secondary winding, with a multimeter measuring 22, the measured maximum resistance when the ends of the main winding and the pen is in addition, a secondary winding, the terminal is the common end resistance retest public end and the main and auxiliary winding terminals, is the main winding resistance is relatively small.Single phase motor generally refers to single-phase AC power supply (AC220V) power supply of single-phase asynchronous motors. This kind of motor usually has two phase winding on the stator, and the rotor is ordinary squirrel cage. The distribution of the two phase windings on the stator and the different power supply conditions can lead to different starting characteristics and operating characteristics.
