Talking about the Electrode Structure of Vacuum Switch Contact

One is easy to manufacture, but it can only maintain the diffusion of the arc when the current is low; by the 1960s, the cup-shaped contact with a transverse magnetic field has been widely used; the longitudinal magnetic field contact is characterized by the effective suppression of the longitudinal magnetic field The movement of the arc-arc column reduces the loss of radial ions and electrons, improves the breaking capacity of the vacuum circuit breaker, and allows vacuum arcs to be diffused at high currents. The shield can be made of copper or stainless steel, and copper chrome is sometimes used. The corrugated pipe in the vacuum interrupter is generally welded on the outside of the movable conductive rod and the inner port of the moving-end cover plate, and acts as a seal. The high-voltage vacuum switch continuously performs the opening or closing action, and the ripple in the vacuum interrupter The tube is also constantly being compressed or restored, so it is easy to wear out, so the bellows can directly determine the mechanical life of the arc extinguishing chamber.