Single-phase motor refers to an asynchronous motor that is powered by a 220V AC single-phase power supply. Because the 220V power supply is very convenient and economical, and the electricity used in household life is also 220V, so the single-phase motor is not only used in a large amount in production, but also closely related to people’s daily life, especially with the improvement of people’s living standards, The amount of single-phase motors used in household electrical appliances is also increasing. Here, the editor of Xinda Motor will give you an analysis on the application and maintenance methods of single-phase motor:
Single-phase motor generally refers to a low-power single-phase asynchronous motor powered by a single-phase AC power supply (AC220V). This type of motor usually has two-phase windings on the stator and the rotor is of the common squirrel-cage type. The distribution of the two-phase windings on the stator and the different power supply conditions can produce different starting and running characteristics.
In terms of production, there are micro pumps, refiners, threshers, pulverizers, woodworking machinery, medical equipment, etc. In terms of life, there are electric fans, hair dryers, exhaust fans, washing machines, refrigerators, etc. There are many types. But the power is less.
Maintenance:
Commonly used motor maintenance and repair center motor maintenance process: Clean the stator and rotor→replace the carbon brush or other parts→vacuum class F pressure immersion paint→drying→calibration balance.
Precautions:
1. The operating environment should always be kept dry, the surface of the motor should be kept clean, and the air inlet should not be obstructed by dust, fibers, etc.
2. When the thermal protection of the motor operates continuously, it should be found out whether the fault comes from the motor or the overload or the setting value of the protection device is too low, and the fault can be eliminated before it can be put into operation.
3. The motor should be well lubricated during operation. Generally, the motor runs for about 5000 hours, that is, the grease should be replenished or replaced. When the bearing is overheated or the lubrication is deteriorated during operation, the hydraulic pressure should replace the grease in time. When replacing the lubricating grease, the old lubricating oil should be cleaned, and the oil groove of the bearing and the bearing cover should be cleaned with gasoline, and then ZL-3 lithium base grease should be filled into 1/2 of the cavity between the inner and outer rings of the bearing (for 2 poles) and 2/3 (for 4, 6, 8 poles).
4. When the life of the bearing is over, the vibration and noise of the motor will increase. When the radial clearance of the bearing reaches a certain value, the bearing should be replaced.
5. When disassembling the motor, the rotor can be taken out from the shaft extension end or the non-extension end. If it is not necessary to remove the fan, it is more convenient to take out the rotor from the non-shaft end. When pulling the rotor out of the stator, it should prevent damage to the stator winding or insulation device.
6. When replacing the winding, you need to write down the form, size, number of turns, wire gauge, etc. of the original winding. When you lose these data, you should ask the manufacturer to change the original design winding at will, which often makes one or more performances of the motor deteriorating, or even unusable.
Xinda motor is equipped with frequency conversion speed regulation energy-saving device, low vibration and noise reduction design, the energy efficiency level meets the efficiency requirements in the GB18613 standard, high energy efficiency, low noise, energy saving and consumption reduction, effectively helping customers save equipment operating costs. The introduction of CNC lathes, wire cutting, CNC grinding machines, CNC milling machines and other automated high-precision production equipment, its own testing and testing center, with testing equipment such as dynamic balance, precise positioning, to ensure high-precision products.
Post time: Jan-19-2023