The Application And Development History Of Three Phase Asynchronous Motors

Three phase asynchronous motor is currently the most widely used type of motor in industrial and agricultural production, covering various fields such as industry, agriculture, national defense, transportation, and public facilities. With the continuous development of China's national economy and the technological progress of the small and medium-sized motor industry, the capacity of asynchronous motors accounts for about 85% of the total power load in the power grid. This shows the widespread and important use of asynchronous motors, which are also widely used in water supply pumping stations. So what is the development history of three-phase asynchronous motors from the early days of liberation to the present?
The three-phase asynchronous motor began in the early days of liberation, when we had not yet formed our own industrial foundation and standard system. At that time, we mainly adopted the national standard system of the former Soviet Union. The main representative products at this stage include J, JO, J2, and JO2 series three-phase asynchronous motors. In 1952, China's first small and medium-sized three-phase asynchronous motor J and JO series products were born, which unified the technical system of China's small and medium-sized motor industry for the first time and completely changed the chaotic situation of motor products left over from old China. By carrying out standardization, serialization, and generalization of electric motors, the products have been unified and developed into series, laying a solid foundation for the rapid development of China's electric motor industry. Starting from 1958, the J2 and JO2 series of motors were organized for national unified design. In 1965, the J2 and JO2 series of motors passed the appraisal and were promoted and applied nationwide. J2 and JO2 motors continued to be produced for more than 20 years, until the development of the Y-series three-phase asynchronous motor product was completed in 1981. In 1985, the national announcement was officially announced to be phased out. This is a simple development process of three-phase asynchronous motors.