Electrical equipment maintenance operation procedures

1、 Preparation before maintenance

Before carrying out maintenance operations on electrical equipment, sufficient preparation should be made. Firstly, it is necessary to collect equipment related information, including equipment manuals, circuit diagrams, last maintenance records, etc., to comprehensively understand the performance and operating conditions of the equipment. Secondly, prepare the necessary tools and instruments for maintenance, such as multimeters, insulation resistance testers, wrenches, screwdrivers, etc., and ensure that the tools and instruments have good performance and meet the accuracy standards. At the same time, maintenance personnel should wear protective equipment such as insulated gloves and insulated shoes, and operate strictly in accordance with safety regulations.

2、 Maintain operational procedures

（1） Appearance inspection

Conduct a comprehensive visual inspection of electrical equipment, checking for any damage, deformation, or corrosion on the equipment casing, checking for loose connections, oxidation or discoloration of wiring terminals, and any accumulation of dust or oil on the equipment surface. If any problems are found, promptly address them.

（2） Electrical performance testing

Use multimeters, insulation resistance testers, and other instruments to measure electrical parameters such as voltage, current, resistance, and insulation resistance of the equipment. Compare the normal operating parameter range of the equipment to determine whether the electrical performance of the equipment is normal. For equipment with insulation resistance lower than the standard value, further inspection of the insulation parts is required to identify the cause of the fault and repair it.

（3） Cleaning and lubrication

Regularly clean electrical equipment, remove internal dust and debris, and prevent dust accumulation from affecting equipment heat dissipation and normal operation. For equipment with moving parts, such as motor bearings, appropriate lubricants should be added according to regulations to ensure flexible operation of the components and reduce wear.

（4） Tightening and adjustment

Check whether the connecting bolts and nuts of each component of the equipment are loose, and tighten the loose parts in a timely manner. Adjust the adjustable components of the equipment, such as the action parameters of relays and the frequency setting of frequency converters, according to actual operating needs to ensure that the equipment operating parameters meet the standards.

（5） Functional testing

After completing the above maintenance operations, perform functional testing on the electrical equipment, simulate normal operating conditions of the equipment, check whether the equipment starts, runs, and stops normally, whether each functional module can work properly, and whether the signal indication is accurate. If any abnormalities are found, promptly troubleshoot and repair the problem.

3、 Post maintenance work

After the maintenance operation is completed, the site should be cleaned up, tools and instruments should be returned to their original positions, and discarded parts and materials should be properly disposed of. At the same time, detailed records of the maintenance time, content, discovered problems, and handling results should be kept to form a complete maintenance file, providing reference for subsequent equipment maintenance and management.

The above covers the main process of electrical equipment maintenance operations. If you have any adjustments to the length of the article, the level of detail in certain sections, or other revision ideas, please feel free to let me know at any time.