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A CUT-OUT SWITCH,PARTICULARLY TO A SINGLE COLUMN SCISSOR CUT-OUT SWITCH WITH A MAIN CONTACT SYSTEM A SECONDARY CONTACT SYSTEM
A CUT-OUT SWITCH,PARTICULARLY TO A SINGLE COLUMN SCISSOR CUT-OUT SWITCH WITH A MAIN CONTACT SYSTEM A SECONDARY CONTACT SYSTEM
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机译:切出开关,与具有主要接触系统的单列剪式切出开关特别地,二次接触系统
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摘要
pA switch for making and breaking a connection between a load circuit and a power line, with two parallelogrammatic linkages terminating in scissorlike contactor pairs, has limitedly swivelable and/or extensible cross-links interconnecting aligned pivotal junctions of the two linkages to provide them with a certain relative mobility. In an operating position, part-cylindrical armatures detachably secured to the two contactor pairs grip respective portions of an elongate countercontact fixedly suspended between a pair of rings attached to the power line, this countercontact comprising a metallic supporting tube also provided with part-cylindrical armatures in the region of the contactor pairs. Each armature may comprise several metallic layers on a base of copper, namely an inner layer of silver, a protective layer of tin on top thereof, and an outer silver layer. The armatures could also be made, at least in part, of a scorchproof material such as silver/cesium oxide./p[US4504708A]
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