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AssigneeBeijing Orient Vacuum Electric Co., Ltd.
InventorsWeirong Liu, Xin Chang
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The invention relates to a vacuum arc extinguishing chamber contact, a vacuum arc extinguishing chamber and a vacuum circuit breaker. The contact includes a contact blade, a first contact cup and a second contact cup. The first contact cup is arranged in the second contact cup. One end of the first contact cup is connected with the second contact cup, and the other end of the first contact cup is connected with the contact blade. The contact blade is connected with the second contact cup. According to the invention, a single longitudinal magnetic field is split into a plurality of independent longitudinal magnetic field areas, a plurality of coils are used for shunting current, and the current density is reduced, thereby solving the contradiction between interrupting of the large short-circuit current and the temperature rise of the large rated current.
A vacuum arc extinguishing chamber contact, comprising a contact blade, a plurality of first contact cups and a second contact cup, wherein the first contact cups are arranged in the second contact cup and arranged in a circumferential array with respect to a geometric center of the second contact cup, and one end of each of the first contact cups is connected with the second contact cup, and the other end of each of the first contact cups is connected with the contact blade.
Dependencies are inferred from the claim text.