Apparatus for the voluntary opening and closing of the power supply of an electrical sector and determine their automatic cutting by producing a overload in any of its phases (Machine-translation by Google Translate, not legally binding)

摘要

Apparatus for the voluntary opening and closing of the power supply of an electrical sector and determine its automatic cutting when an overload occurs in any of its phases, which comprises combined, the following essential elements: A) a set of levers or bridge-bars, isolated from each other, electrically connected to both fixed terminals with interleaving of fuses and joined together forming a rotating assembly on articulation, which can be folded down, to close circuits, its levers being turned on corresponding clamp-terminals, in which position it is retained by movable locking stops and tends to be disconnected by the force of springs that request it. B) an elbowed hinged articulated lever device, one of whose arms constitutes a stop that intervenes, retaining it, against an extension of some of the levers of the mobile connecting bridge, locked the system, and against whose other arm it is acted, voluntarily by means of a pulsator and automatically by means of tilting pieces forced by springs, normally retained by the fusible threads and of which it turns some, when it is released by breaking or melting a fuse, C) a set of auxiliary conductors, mounted in derivation with the fuses, which are connected at the start or start-up of the device or sector, that is, when the connection bridge starts to turn, and are disconnected at the end of said rotation. D) a device for connecting and disconnecting the auxiliary conductors connected to the fuses, constituted by respective fixed-spring contacts, permanently and respectively connected to the supports of the bridge levers and therefore to these levers and corresponding spring-contacts facing each other. The first and mounted on a rocker swinging on articulation and requested by a spring, on an appendix of which rocker is actuated by a protrusion of one of the connecting levers, protruding which is integrated by an oscillating piece on a lever-support, with limit stop for its rotation in one direction and free rotation in the opposite, but tending to the first by a spring. E) an insulating plate, on which the set of related elements is mounted, and the corresponding connections, terminals and accessories, through which the internal circuits are established, and with the outside, required. (Machine-translation by Google Translate, not legally binding)