公开(公告)号：US3560688A

公开(公告)日：1971-02-02

申请号：US3560688D

申请日：1969-05-12

Applicant: ASEA AB

Inventor： BACHLER SVEN

IPC: H01H1/38 ,  H01H1/44 ,  H01H1/50

CPC classification number: H01H1/385

Abstract: A contact arrangement for circuit breakers includes a movable contact plug and a stationary sheath contact. In the sheath contact, a plurality of contact fingers are arranged in ring formation and are pressed against the contact plug by means of leaf springs punched out of sheet material. Each leaf spring is loosely inserted in a longitudinal groove in the associated contact finger in such a way that the spring action occurs in the plane of the spring.

公开(公告)号：US3592988A

公开(公告)日：1971-07-13

申请号：US3592988D

申请日：1969-03-27

Applicant: ASEA AB

Inventor： PUCHER WALTER ,  BACHLER SVEN

IPC: H01H33/28 ,  H01H33/42 ,  H01H33/835 ,  H01H33/867 ,  H01H33/59

CPC classification number: H01H33/42 ,  H01H33/285

Abstract: A high voltage gas blast circuit breaker is provided with series-connected pairs of contacts, one used to interrupt the circuit being protected, and the other used to close or make the circuit being protected. The contact used for circuit interruption may be operated synchronously to interrupt at or before a current zero. The contact used for closing the circuit may be operated when the instantaneous voltage across the contact is zero, thereby to prevent line voltage surges during closing. The operating circuits for the contacts are at the high voltage side of the breaker and contain a generator driven from ground by an insulation shaft. The operating circuits include a photosensitive switch which is energized by light sources located at ground potential.