The factory testing of motors is a key link in the manufacturing and manufacturing of electric motors. Due to differences in motor manufacturers and manufacturing processes, there are significant differences in the manufacturing process of electric motors, especially due to differences in processing equipment and processes. Different motor manufacturers have significant differences in the testing items and methods for components and electrical semi-finished products. However, for the whole machine factory test, the AC motor test bench test items are similar, which is also the result of product quality and performance requirements.
Newly established and modified motor manufacturing plants integrate factory testing of motors into the entire production process, especially for motors with high consistency, from power supply to subsequent testing, fully automated.
Taking a three-phase asynchronous motor as an example, conventional motor tests include winding DC resistance, insulation resistance, withstand voltage, no-load, mechanical performance testing, etc., all of which are manually operated. The automatic testing system uses multiple testing units and multiple testing units to test one by one. During the testing process, the testing process is carried out according to a predetermined program. Automated operation can greatly improve the testing efficiency of the motor.
However, most of the testing equipment is conducted after the motor wiring is completed, whether it is the delta or star connection method, and no phase to phase insulation faults can be detected during the testing process; The data collection of the starting process of the motor is also instantaneous value collection under non locked rotor state. From the statistical situation of the experimental data, the consistency of the data is not very good, and there is a certain difference from the traditional experimental method data.
The AC motor test bench is an automated action program based on the accumulation of most motor test data, suitable for most motor products. However, for personalized motor products, necessary adjustments need to be made through manual intervention to prevent unnecessary quality misjudgment.