萍乡Precautions for disassembly and assembly of three-phase asynchronous motors

Three-phase asynchronous motors are widely used and are affected by various factors, which inevitably lead to faults and require timely maintenance and repair. The editor tells you the precautions to pay attention to when disassembling and assembling three-phase asynchronous motors.

Before disassembling a three-phase asynchronous motor, it is necessary to first understand the nameplate of the three-phase asynchronous motor and be familiar with the basic structure of the asynchronous motor, and then make preparations before disassembling the motor (this is a very important part of the process of disassembling the asynchronous motor). We should have a clear understanding and not blindly engage in actions.

To ensure the quality of maintenance, markings and records should be made at the motor terminals, end caps, etc. before disassembly, so that the motor can be restored to its original state after assembly.

Incorrect disassembly is likely to damage parts or windings, even expand the fault, increase the difficulty of repair, and cause unnecessary losses.

To correctly grasp the usage methods of disassembly and assembly tools and instruments, such as hammers, copper rods, pullers, wrenches, megohmmeters, multimeters, and other tools.

The assembly sequence of a three-phase asynchronous motor after repair is roughly the opposite to that during disassembly.

When assembling, pay attention to some marks during disassembly and try to reset them according to the original marks.

To master the safety operation regulations, it is necessary to receive education on the safety use regulations of electrical equipment, the safety operation regulations of fitters, and relevant experience in fire and explosion prevention, to ensure the safe and smooth completion of skill training, and to ensure the safety of personal equipment and property.

Special attention should be paid to the disassembly and assembly requirements of the motor installed on the equipment:

1. Cut off the power supply first, remove the connection between the motor and the three-phase power line, and mark the phase sequence and insulation treatment of the power line;

2. When disassembling the connection between the motor and the base, pulley, and coupling, make corresponding positioning marks first to ensure the safe separation of the motor and the main equipment;

3. The loosening and tightening of the end cover screws must be rotated diagonally up, down, left, and right in sequence;

4. The rotor of a large electric motor should be balanced with a steel wire rope, and a wooden pad should be laid on the ground. When slowly translating out the rotor, the action should be careful, pushing and connecting at the same time to prevent scratching the stator winding and rotor winding;

5. Disassemble, clean, inspect, and replace the fan cover, fan blade, end cover, bearing, and rotor in sequence.

Zhejiang Jinsu Motor Co., Ltd. is an enterprise that manufactures various types of DC, AC, and three-phase asynchronous motors. The company covers a total area of over 30 acres and currently employs more than 150 employees; Having a modern garden style factory building and introducing excellent and efficient production and testing equipment from both domestic and international sources, we aim to create a sustainable manufacturing enterprise that provides customers with excellent products and services. As a modern enterprise that integrates scientific research, production, sales, and service, we are committed to building a sustainable business.