公开(公告)号：US3863041A

公开(公告)日：1975-01-28

申请号：US42157473

申请日：1973-12-04

Applicant: WESTINGHOUSE ELECTRIC CORP

Inventor： ROSTRON JOSEPH R ,  DROPIK SYLVESTER J

IPC: H01H33/16 ,  H01H33/825

CPC classification number: H01H33/166

Abstract: An improved high-voltage circuit-interrupter is provided having series main contacts and resistance contacts with a closing resistance shunting the resistance contacts, so that the closing resistance is inserted into the circuit during the closing operation of the high-voltage circuit-interrupter, but is out of the circuit during the opening operation. An improved mechanism is provided for utilizing the inertia of the movable resistance contact-frame and a relatively light biasing means, such as a light compression spring, for example, to ensure that the resistance contacts remain closed, during the beginning of the opening operation of the breaker, so that the closing resistance is shorted out, and the task of extinguishing the established arc or arcs is imposed only upon the main contacts and not at the resistance contacts. During the closing operation, the construction is such that the main driving frame, carrying the movable main contact or contacts, carries therealong also the movable resistance contactframe, with the contact overlap distance being such that the main contacts are closed prior to the closing of the serially-related resistance contacts, thereby inserting the closing resistance into the circuit momentarily during the closing operation of the high-voltage circuit-interrupter.

Abstract translation: 提供了一种改进的高压断路器，其具有串联的主触点和电阻触点，其闭合电阻使电阻触点分流，使得在高压断路器的闭合操作期间闭合阻力被插入到电路中，但是 在打开操作期间出现电路。 提供了一种改进的机构，用于利用可移动电阻接触框架的惯性和诸如轻压缩弹簧的相对较轻的偏压装置，以确保电阻触点保持闭合，在开启操作期间 断路器，使闭合阻力短路，并且建立的弧或弧的任务仅施加在主触点上，而不是施加在电阻触点上。

公开(公告)号：US3930134A

公开(公告)日：1975-12-30

申请号：US40152073

申请日：1973-09-27

Applicant: WESTINGHOUSE ELECTRIC CORP

Inventor： ROSTRON JOSEPH R ,  BRUNSON LAWRENCE A ,  SOLES OTTO H

IPC: H01H33/32 ,  H01H35/38

CPC classification number: H01H33/32 ,  Y10T137/86614

Abstract: An improved pneumatic power unit is provided including a penumatic piston reciprocally operable within an operating cylinder housing, which, in one conceivable application, operates the contact structure of a power circuit-breaker, and uses a normally-open three-way valve, which normally provides highpressure gas on both sides of the driving piston within the operating cylinder housing. During the closing operation of the circuit-breaker, when the pneumatic power unit of the instant invention is applied to this particular application, the threeway normally-open valve is operated to exhaust one side of the driving piston, and the high-pressure gas already present on the other side of the piston provides the required closing force to close the contacts of the circuit-breaker against the usuallyprovided accelerating spring pressure tending to open the breaker. The de-energization of the normally-open three-way valve returns the closing or driving piston to its normal reset position, in such a particular application, thus not requiring a return spring, since the cross-sectional area of the piston-shaft is acted upon by the internal high-pressure gas present on the return or non-working side of the piston assembly in the cylinder housing, and since normal atmospheric air pressure obviously exists on the outside or externally of the operating-cylinder housing thereby exerting relatively little inward force on the cross-sectional area of the piston rod.

Abstract translation: 提供了一种改进的气动动力单元，其包括在操作气缸壳体内可往复运动的减速活塞，其在可想到的应用中操作电力断路器的接触结构，并且使用常开三通阀，其通常 在操作缸体内的驱动活塞的两侧提供高压气体。 在断路器的闭合动作期间，当将本发明的气动动力单元应用于该特定应用时，三通常开阀被操作以排出驱动活塞的一侧，高压 已经存在于活塞另一侧的气体提供了所需的关闭力，以便相对于通常提供的加速弹簧压力来闭合断路器的触点，以期打开断路器。