SU509905A1 - High Voltage Arc Camera - Google Patents

Description

one

The invention relates to arc extinguishing chambers of high-voltage contactors and high-speed switches of fixed and alternating current rolling stock.

High-voltage arc-suppressing chambers are known, which contain insulating walls that form a narrow flat gap with a series of parallel metal plates of the lattice, and magnetic poles .10

; The arc extinction in these chambers occurs as a result of its cooling against the chamber walls, as well as due to an increase in the gradient of the arc in the arc suppression grill, which is a series of parallel metal plates that are not in contact with each other. out of the camera. The purpose of this. : lattices - reduction of switching perenn; 1f of zheny and limitation of arc exhaust for 20

; camera limits.

I However, the known chambers are inconvenient because; they have large dimensions, which are determined by the dimensions of the arcing; a grating located at the exit of the arc of 25

camera slits. For example, for arcing chambers: switching devices of a circuit with a voltage of 100О 2ООО with a plate thickness of 2 mm and a gap; 1 and between them 2.5 MMf. The grid length of 100 plates is 450 mm (the number of plates is determined by the voltage electric circuit; For electrical devices operating in the factory with the voltage of ZOOO4OOO, the dimensions of the flatbed, and therefore 1 dimensions of the chamber, are 1.5 - 2 times larger. The purpose of the invention is to reduce the dimensions of the chamber and increase its breaking capacity.

Claims (1)

 The goal is achieved} by the fact that | on the inner side surfaces of the x-walls there is a narrow flat slit, in the recesses two rows of metal are placed (plates, forming two grilles arranged opposite each other, the plates of which do not completely cross the slit chambers, and there is a gap that is equal to or less than the width of the working part of the slit.This version of the Schmer can be performed in combination with a flame damping grille, the arc lying on the exhaust, cat plates (-; 1 and 2 depict the sentence This camera is a general view of the camera and its embodiment; Figure 3 illustrates the design of a camera using a flat-5 m grating grid. The camera is structurally arc-like (see figures 1 and 2) consists of two JOLIAIAON - 1 walls 1, magnetic poles 2 and two; / rows of metal plates 3, / S The chamber is equipped with a flame arresting grid 4. An electric arc under the action of j electrodynamic forces and a magnetic blow, passes a narrow slit formed by the insulating walls, enters the space between two doors Rows of metal plates 3 with high heat capacity th and providing her intense deionized impact. In this case, the high voltage gradient 20 of the arc is created both as a result of intense heat transfer to the metal plates 3, and due to an increase in the electrode voltage drop between these plates. Formula invented. 1. A high-voltage arc-suppressing chamber containing insulating walls forming a flat slot with a number of parallel metal plates of the lattice and magnetic poles, which is distinguished by the fact that, in order to reduce its dimensions and increase the breaking capacity, it is equipped with an additional set of parallel plates located opposite the lattice plates, do not intersect the gap at a distance not exceeding the width of the slot. 2, the camera of claim 1, about t L and h and y and the fact that it is equipped with a flame-extinguishing grate, the plates of which are located across the gap. FIG. one