Maintenance Methods For Circuit Breakers

The use of circuit breakers also requires strengthened maintenance to prevent malfunctions and leakage. After all, although electricity is an indispensable companion in people's lives, it is also dangerous!

1. It is necessary to keep the circuit breaker clean and tidy, and to keep the air dry during use. Otherwise, it may cause the following consequences: damage to the insulation between the main contacts after breaking, making it difficult to arc or reigniting the arc, and in severe cases, causing the arc extinguishing chamber to burst; Reduce the insulation strength of the supporting porcelain bottle and the inner cavity of the arc extinguishing chamber, resulting in surface discharge; Foreign objects such as paint and rust residue in the pipeline may block the air outlet, causing the main circuit breaker to malfunction and cause jamming; If foreign objects enter the arc extinguishing chamber, it may cause poor contact of the main contact, causing the nonlinear resistance to burn due to long-term electrification, and in severe cases, it may cause the nonlinear resistance porcelain bottle to burst.

2. Regularly replace rubber parts. The main circuit breaker is a pneumatic electrical device with a complex structure, and each component requires high sealing performance. To ensure good sealing performance, rubber parts should be replaced regularly.

3. Regularly inspect all major components. Regular inspections should be conducted to ensure that all major components are in good technical condition.

4. Remove carbides or metal particles from the arc extinguishing cover. If the arc extinguishing cover is broken, it should be replaced. When checking the surface of the main contact for small metal particles, they should be removed, but they cannot be filed and can only be lightly wiped.

5. During the closing and opening process of the circuit breaker (automatic air switch), its movable part and the parts of the arc extinguishing chamber should have no jamming phenomenon. When special noise is found in the iron core during use, its working surface should be cleaned, and each transmission mechanism should be injected with lubricating oil.