Selection Of Solid-sealed Pole Vacuum Interrupter

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The application of Embedded Pole ensures the external insulation of the arc extinguishing chamber. Therefore, at the same voltage level and current specification, the volume of the arc extinguishing chamber can be made smaller, but special requirements are also put forward for the shell, shielding, dynamic and static contact structure of the arc extinguishing chamber. The vacuum arc extinguishing chamber and the upper and lower outlets of the sealed pole are all encapsulated in epoxy resin, which determines that the heat dissipation conditions are relatively poor. Solving the temperature rise has become a difficulty for the sealed pole. Therefore, reducing the contact resistance of the arc extinguishing chamber and the loop resistance of the sealed pole has become a difficulty in manufacturing the arc extinguishing chamber. It determines the impact of long-term high temperature on the arc extinguishing chamber during the production process of the sealed pole, that is, after the arc extinguishing chamber is baked at 140-160℃ for 8-12 hours, its electrical and mechanical properties and life are not reduced. In order to ensure the electrical and mechanical properties of the vacuum circuit breaker, it is particularly important to select a vacuum arc extinguishing chamber with a reasonable structure and excellent performance.

Selection Of Solid-sealed Pole Vacuum Interrupter

AODLEY

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