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Reasons for high-voltage vacuum circuit breaker refusal to open and close

The high-voltage vacuum circuit breaker is one of the key electrical appliances related to whether the power system can be effectively controlled. Only by maintaining its good operating state can the normal and efficient operation of the circuit system be ensured.

Joyson Electronics breaks ground on new industrial base in Hefei

Cast iron heat treatment

We need to properly select optimal chemical composition to obtain a given organization for cast iron production,heat treatment is also an important way to further adjust and improve matrix structure in order to improve the performance.Cast iron heat treatment has some way with cast steel heat treatment,but also exist differences.Cast iron heat treatment generally could not improve the morphology and distribution of graphite in the original organization.

Different Types of Fancy Yarns-Slub Yarns

We are pleased to share with you the Basic Principle of fancy yarn , industry knowledge and company news, and provide you with product information and process.

Reasons for the reduction of the vacuum degree of the vacuum interrupter

The main problem of the vacuum interrupter is that the degree of vacuum is reduced. The main reasons for the decrease in vacuum degree are as follows.

Development of vacuum interrupter

The idea of using a vacuum medium to extinguish the arc was put forward at the end of the 19th century, and the earliest vacuum interrupter was produced in the 1920s. However, due to the limitations of vacuum technology, materials and other technical levels, it was not practical at that time.

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