Research on Thermoplastics Used for Embedded poles
Since the 21st century, in the field of medium voltage switch, SF6 arc chamber development is far less than the development of vacuum interrupter. With the continuous development of technology, open vacuum interrupter or insulated tube with an interrupter vacuum circuit breaker has also been gradually replaced by a 24kv embedded poles -type vacuum circuit breaker.
In China, the pressure in the vacuum circuit breakers in 2009 has accounted for 99.39% of medium voltage circuit breakers, as many as 100 manufacturing enterprises [1]. Solid-sealed pole-type vacuum tube circuit breaker with its high reliability, high environmental applicability and maintenance-free advantages such as the rapid occupation of a large number of market share, but also to promote the continuous sealing technology continues to break, the parameters are getting higher and higher, the product line Gradually formed, perfect. Solid sealing pole as the core components of the vacuum circuit breaker, the use of epoxy resin and the upper and lower outlet all the end of the package. Affected by vacuum circuit breakers, especially APG (automatic pressure gel) process in the field of solid sealing applications, but also to the 40.5kv embedded poles technology has brought a huge breakthrough. After several decades of development, solid sealing pole technology has matured, the market is also saturated. At this point, ABB launched the thermoplastic solid pillar is tantamount to seeking a breakthrough, the development of the market has brought a new direction. Compared with the embedded poles, the thermoplastic material can reduce the weight of the entire pole 35%, only the insulation material to reduce the weight of more than 1/3, by reducing the density of thermoplastic materials, greatly improve the dielectric strength, mechanical stiffness and mechanical Strength, so as to achieve the purpose of reducing the quality. In addition, these improvements have further reduced the volume of the product.
In China, the pressure in the vacuum circuit breakers in 2009 has accounted for 99.39% of medium voltage circuit breakers, as many as 100 manufacturing enterprises [1]. Solid-sealed pole-type vacuum tube circuit breaker with its high reliability, high environmental applicability and maintenance-free advantages such as the rapid occupation of a large number of market share, but also to promote the continuous sealing technology continues to break, the parameters are getting higher and higher, the product line Gradually formed, perfect. Solid sealing pole as the core components of the vacuum circuit breaker, the use of epoxy resin and the upper and lower outlet all the end of the package. Affected by vacuum circuit breakers, especially APG (automatic pressure gel) process in the field of solid sealing applications, but also to the 40.5kv embedded poles technology has brought a huge breakthrough. After several decades of development, solid sealing pole technology has matured, the market is also saturated. At this point, ABB launched the thermoplastic solid pillar is tantamount to seeking a breakthrough, the development of the market has brought a new direction. Compared with the embedded poles, the thermoplastic material can reduce the weight of the entire pole 35%, only the insulation material to reduce the weight of more than 1/3, by reducing the density of thermoplastic materials, greatly improve the dielectric strength, mechanical stiffness and mechanical Strength, so as to achieve the purpose of reducing the quality. In addition, these improvements have further reduced the volume of the product.
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