公开(公告)号：US3665249A

公开(公告)日：1972-05-23

申请号：US3665249D

申请日：1970-10-28

Applicant: INST RECH DE L HYDRO QUEBEC

Inventor： ZAJIC VLADISLAV

IPC: H01H33/14 ,  H01H33/18 ,  H01H33/28 ,  H01H33/59 ,  H02H7/22

CPC classification number: H01H33/285 ,  H01H33/14 ,  H01H33/18 ,  H01H33/596

Abstract: A high voltage direct current circuit breaker comprising several modules connected in series, each module including an electrodynamic mechanism connected to the mobile contacts of the circuit breaker and permitting to open very rapidly such contacts under load thus creating an electric arc between the contacts. Each module includes at least one deionizing chamber comprising a suitable number of parallel metallic plates disposed perpendicularly to the electric arc to form quenching channels for the electric arc. Finally, each module comprises at least one magnetic arc extinguishing system for deflecting the electric arc of the contacts into the deionizing chamber and for forcing such arc to enter into the quenching channels to break it into a number of short arcs so as to create an arc voltage which is higher than the nominal voltage of the circuit, and for quenching such small arcs and finally extinguish them.