Research On Dynamical Simulation And Strength Analysis Of Operating Mechanism Of ACB

Due to the rapid development of the national economy, China’s power industry in the development of unconventional, according to the requirements of the National Electric Power Planning,2020 installed capacity will reach 950 million KW, with the "East", "South" and the State Key implementation of the project, the demand for medium-voltage electrical equipment is constantly expanding. In 12KV fields, the products will mainly develop in the direction towards the vacuum, the proportion will continue to increase. Our trial since 1996 12KV armored metal-enclosed switchgear, business model as KZN1-12, as the market for double bend in the home-deposited aluminum and zinc products KYN28A cabinet approval, the company is certified in the country in 2007 PCCC when the product model directly KYN28A series certification, product specifications have been done 3150A/40KA, but in recent years, due to the high current, high breaking power distribution equipment in some power plants, steel mills and other large projects, especially the protection of power breaking indicator units exported in increasing pressure cabinet. Currently rated current 4000A grade products,4S rated short time withstand current up to 50KA basic products are based on embedded pole vacuum breaker; on the contrary, if the use of composite insulated type of vacuum circuit breakers, if the rated current 4000A do, then the 4S are basically rated short time withstand current 40KA. Based on this understanding, I departments in accordance with the requirements of the company’s development plan, development KYN28A-12/4000A-50kA metal-enclosed switchgear, fully improve the company KYN28A-12 series. The development of KYN28A-12-4000A/50KA MV cabinet 4S rated short time withstand current 50KA technical indicators should be said is a certain nature, in 12KV product areas with strong market competitiveness.In this paper, KYN28A-12/4000A-50kA metal-enclosed switchgear cabinet vacuum breaker, metering cabinet, PT cabinet and outgoing cabinet cabinets typically choose their type, their first program, first and secondary component selection, secondary selecting and applying the principles and wiring and microprocessor-based integrated security device will be more detailed engineering design, virtual prototyping and design method of combining theory, the key point in the design process encountered theoretical analysis and simulation analysis and resolve thereby reducing costs, saving manpower and resources to shorten the design cycle to complete the design premise of victory.