Post Time: 2024-08-30 10:19:02
As an important power protection device, vacuum circuit breakers are widely used in power systems to cut off and connect load currents, fault currents, and short-circuit currents. In order to ensure the reliability and service life of indoor vacuum circuit breaker, regular maintenance and care are essential. The following are some points to note when maintaining and servicing breakers:
1. Regularly check the insulation performance
The insulation performance of the mv vacuum circuit breaker directly affects the reliability of its operation. Regularly check the insulation resistance and dielectric loss factor of the circuit breaker to ensure that they are within the specified range. At the same time, check whether the vacuum degree of the vacuum interrupter meets the requirements. If the vacuum degree is reduced, the vacuum interrupter should be replaced in time.
2. Check the wear of the contacts
The contacts of the breaker may be worn or ablated after frequent operation and long-term use. It is necessary to regularly check the contact surface of the contact to see if there is any burn, melting or excessive wear. If the contact wear exceeds the specified limit, it should be replaced or repaired to ensure good contact performance and current conductivity.
3. Maintain the flexibility of the operating mechanism
The operating mechanism of the circuit breaker is an important part of realizing the opening and closing action. The various parts of the operating mechanism, including springs, connecting rods, pins, etc., should be checked regularly to ensure that they are not rusted, deformed or damaged. At the same time, add an appropriate amount of lubricating oil to reduce friction and ensure the flexibility and reliability of the operating mechanism.
4. Check and replace seals
The seals in the breaker, such as sealing gaskets and sealing rings, may age or be damaged after long-term use, resulting in air or oil leakage. The condition of the seals should be checked regularly and replaced in time if necessary to prevent the vacuum degree from decreasing or the insulating oil from leaking, which will affect the normal operation of the equipment.
5. Clean the surface and surrounding environment of the equipment
Keeping the surface and surrounding environment of the breaker clean is one of the key measures to prevent insulation failure. Dust, dirt and oil on the surface of the equipment should be removed regularly, especially in heavily polluted environments. When cleaning, pay attention to using appropriate cleaning agents and tools to avoid damaging insulating parts.
6. Check and test mechanical properties
Periodically test the mechanical properties of hv vacuum circuit breaker, such as opening time, closing time, closing bounce time, etc., to ensure that their operating performance meets the specified technical parameters. If necessary, use professional testing instruments to perform mechanical property tests to determine the working status of the operating mechanism.
7. Electrical performance test
In order to ensure the electrical performance of breakers, it is necessary to regularly perform power frequency withstand voltage tests, loop resistance tests, etc. to check the withstand voltage capacity of the equipment and the contact resistance value of the conductive loop. Any abnormal electrical performance test results may indicate potential equipment failures, and repair measures must be taken in time.
8. Keep records and file management
After each maintenance and inspection, the inspection results and treatment measures should be recorded in detail, and a complete equipment maintenance file should be established. This helps to track the operating status and maintenance history of the equipment, and provide a reference for fault diagnosis and future maintenance.
9. Regularly train maintenance personnel
Equipment maintenance personnel should have professional knowledge and skills, and be familiar with the structure and working principle of breakers. Regularly organize maintenance personnel to participate in training to improve their operating level and fault handling capabilities, and ensure that maintenance work is carried out in accordance with specification requirements.
The maintenance and care of outdoor vacuum circuit breaker is not only to extend their service life, but also to ensure the stable operation and safe power supply of the power system. Regular inspection, timely discovery and elimination of hidden dangers are effective means to ensure the normal operation of breakers. Through systematic maintenance measures and scientific management methods, the reliability and operating efficiency of breakers can be effectively improved.
