subject: On The Pressure Gas Circuit Breaker And Circuit Breaker Selection Self [print this page] Can say for sure, is still a large number of production and use of pressure-type SF6 gas circuit breaker, breaking both the performance and power a variety of life, or breaking capacity and voltage level of a single fracture, can satisfy the High pressure And EHV power systems needs. Pressuring gas SF6 circuit breaker that the biggest shortage of power is used on the hydraulic mechanism or a pneumatic body leakage.
Hydraulic mechanism has several decades of production history and experience, it is because use of too long a time, use quantity is too great, while the leakage phenomenon seems too much, use the department hopes to have a structure relatively simple, intuitive and there is no liquid and gas, no pressure and seal, no need for pressure monitoring and closure of the pure mechanical actuator to replace the hydraulic mechanism to reduce the leakage caused a lot of maintenance work. Spring operating mechanism to reactivate can type SF6 circuit breaker and self-emergence, to adapt to the majority of this need to run departments.
Type SF6 circuit breaker self is most characteristic of greatly reduced operating power, the biggest advantages is the use of a purely mechanical spring mechanism, there is no oil or gas leakage and sealing problems. But we should also note that self-type SF6 circuit breaker due to the reduction of operating power will make some breaking performance and technical indicators are affected, so it's use is limited. Current production type SF6 circuit breaker as a self rely mainly on their own energy arc short circuit interrupter to improve indoor SF6 gas pressure to reach out arc pressure, therefore bound to increase the arcing time, increase the burning of vents and extent of contact so that the initial recovery rate of medium intensity decreased, so that self-type SF6 circuit breaker short-circuit breaking capacity, the number of electronic life, SLF breaking capacity, fracture pressure level can not reach the current production of pressure-type SF6 gas the level of circuit breakers, which can only be a single fracture to the 220kV voltage level, short-circuit breaking capacity of only 40kA. Not only that, as a self-type SF6 circuit breaker interrupter structure is more complicated, more parts, and in breaking the current time of different sizes to be reliable, and this only increases the difficulty of manufacturing the same time, may also electrical reliability adversely affected. Structure is simple, intuitive, but its reliability is hard to say higher than the hydraulic mechanism, or a lot of time in a little oil circuit breaker is not used in a hydraulic mechanism. Spring institutions to overcome the leakage of the hydraulic sector, but may occur more mechanical problems, such as mechanical deformation, damage, catching and Opening and Closing lock failure and so on, but the spring itself is difficult to control the manufacturing quality, particularly coil spring and torsion spring, so most use of the current spiral spring. Institutions with a spring-type SF6 circuit breaker is still self development, still need to continue to improve its electrical performance and improved, so in the short term is difficult to replace compressed air type SF6 circuit breaker. Please visit: For more information visit the high-voltage switch network
Equipped with a spring mechanism of the self-energy type SF6 circuit breaker appears to solve the long run the department was hydraulic mechanism of the leakage caused by difficulties, many departments have run or are considering the selection of self-energy type SF6 circuit breaker, which is understandable. However, the current self-energy type SF6 circuit breaker is still in development, in its apparent advantages, many new problems to be resolved, and the lack of running experience, this is an indisputable fact. Therefore, the running department should be fully aware of selection pressure gas type and the self-style their own advantages and disadvantages, according to the system operating conditions and development prospects, through technical and economic comparison has selected the object type SF6 circuit breaker on the self selection not herd phenomenon.
Switch manufacturer in China in the research, development and production of self-type SF6 circuit breaker, we can not ignore, but can not escape the hydraulic sector to improve and perfect the work, while on the run departments, as soon as possible solution is still a large number of production and use of the hydraulic mechanism of the leakage problem is more practical work.
On The Pressure Gas Circuit Breaker And Circuit Breaker Selection Self
