General Steps For Repairing A 380W Motor

The 380W motor is a type of motor that is popular due to its superior performance and extensive practicality. As we all know, there is always the possibility of motor failure, so how to repair it? Next, we will introduce the general steps for repairing a 380W motor.
380W motor is the most important power equipment in modern agricultural and industrial equipment. Due to many users who are not aware of the importance of correct use methods and protection awareness, it is often caused by improper use that the 380W motor burns out. Once the equipment damages the driving force, it will delay work and delay production progress, especially agricultural machinery and orchard machinery of rural friends, Therefore, there is a need for a large number of professional personnel to repair the 380W motor. It is not difficult to repair the 380W motor. Here are the following steps:
1. Before disassembly, understand the basic data of the 380W motor, check the quality of the 380W motor, understand the winding principle, voltage, current, power, wiring method, number of poles, rotational speed of the 380W motor, and use a multimeter to check whether the winding resistance value is within the normal range, and whether the ground resistance, or insulation resistance, is acceptable.
2. Disassemble the machine, record the installation sequence and location of each component, determine the cause of the burn based on the burn out of the winding, record the wiring method of the junction box, and the installation position of the housing body before disassembly, and make a mark. Some of the installation positions of the machine body are directional and cannot be installed incorrectly. After disassembly, visually inspect the cause of the burn out of the coil, including local interphase short circuit, interturn short circuit, lead wire short circuit, single-phase startup winding burn out, and operating winding burn out, Whether one of the three phases is burned out or whether all three phases are burned out, the cause of damage to the coil can be determined from the burn out condition of the coil.
3. When disassembling a winding, it is necessary to record the wiring method of the winding, the position of the lead wire, insulation, slot number, coil pole number, wire diameter and model, number of turns, span per turn, length and inner diameter of the stator core, etc., and make detailed records.
4. Winding wire embedding: Determine whether to use a single or multiple seven-clad wires based on the wire diameter model. Regardless of how many wires are used for winding in parallel, the sum of cross-sectional areas must be consistent with or very close to the original wire model (reference error of plus or minus 0.02mm).
The length of the wire mold should be appropriate. If it is short, it will not be easy to thread, if it is long, it will not be beautiful, and the coil will easily touch the housing.
Cut insulating paper, wind the wire, and remove the wire. Take care not to damage the insulating paint on the surface of the enameled wire to avoid inter turn short circuits. Insulate the phases with insulating paper to prevent inter phase short circuits. Pay attention to the consistent direction of the winding down.
The wiring shall be recorded during wire removal, and the joints shall be welded and insulated with insulating sleeves. During wiring and binding, it is necessary to ensure that the rotor does not touch the coil during installation.
5. Dip in insulating paint and dry it. After binding the winding coils, first measure the insulation resistance with a megohm megger to ensure that there is no problem with the insulation. Then apply insulating paint and place it in the oven for drying.
6. Install the 380W motor and check the winding drying condition. The insulation paint is not sticky and the insulation resistance is greater than 0.5 megohm. The installation should be carried out in the reverse order of disassembly. For components that need to be replaced and maintained, they should be handled before installation. For example, bearings and large ball gaps need to be replaced. Each repair requires refueling and maintenance. Installation is crucial to ensure that each component is in good condition and installed in place.
In a word, motor maintenance is to record the original data and try to make it back to the original factory data. To add another word, the enameled wire on the market is divided into old copper and new copper. New copper is used, and the quality of the wire also determines the maintenance quality.
To sum up, if we follow the above steps when repairing the 380W motor, we can easily solve the problem when the 380W motor fails. If you encounter any trouble while maintaining the 380W motor, you can consult us.