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Insulation of vacuum interrupter


Vacuum circuit breaker insulation is divided into fracture insulation, interphase insulation and insulation to the ground. vacuum interrupter in the vacuum circuit breaker in addition to breaking the working current and short circuit current, but also bear the task of fracture isolation. At present, the manufacturer of interrupter is good and bad, in order to ensure the vacuum circuit breaker in the safe and reliable operation of the power system, vacuum interrupter as the core of the vacuum circuit breaker device to ensure its insulation capacity, select the quality assurance manufacturers is essential The
Vauum interrupter contactor insulation is divided into internal insulation and external insulation, the internal insulation is divided into static insulation and dynamic insulation. In the type test, the insulation of the vacuum interrupter mainly assess the short-time power frequency withstand voltage and lightning impulse withstand voltage, and in actual use, due to grid conditions and the use of different environments, vacuum interrupter insulation needs Consider the factors, such as breaking the small inductor current cut off the over-voltage, open the fault load when the heavy blow through the voltage and in the high temperature, hot and humid, dirty, high altitude and other harsh conditions of insulation tolerance ability. In view of the above factors, the insulation of the vacuum interrupter mainly from the insulation design, manufacturing process and the use of three ways to consider. Insulation design and manufacturing process is done by the manufacturer of the vacuum interrupter, while the use of the need for more vacuum circuit breaker manufacturers to consider.

Vacuum interrupter in the design and manufacture of the insulation after the completion of the guarantee, does not mean that can be used under any conditions, empty interrupter in the practical application of the insulation problem is limited by the use of conditions, circuit breaker manufacturing Manufacturers must be based on the use of end-users place to make a different design to meet the insulation needs.
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