RU75786U1 - HIGH VOLTAGE TRIPOLES VACUUM CIRCUIT BREAKER - Google Patents

Abstract

The utility model relates to electrical engineering, in particular, to high-voltage apparatus engineering, and can find application in high-voltage three-pole vacuum circuit breakers.

A useful model solves the problem of creating a high-voltage three-pole vacuum circuit breaker, characterized by simplicity of design with ease of use.

To solve the problem in a high-voltage three-pole vacuum circuit breaker containing three vacuum arcing chambers with fixed and movable contacts, a moving contact control unit, three-pole fasteners, support insulation, insulation rods, preload nodes associated with insulation rods located in the direction of the axis of movement vacuum interrupter chambers, it is proposed, according to this utility model, the control unit for the moving contacts of the vacuum interrupter chambers in the form of two switching electromagnets located between the middle and extreme poles, the movable cores of the switching electromagnets are rigidly fixed on a cross-beam common to the three poles connected to the preload nodes.

Description

The utility model relates to electrical engineering, in particular, to high-voltage apparatus engineering, and can find application in high-voltage three-pole vacuum circuit breakers.

Known high-voltage three-pole vacuum circuit breaker containing three vacuum arcing chambers with fixed and movable contacts, fastening elements of three poles, support insulation, insulating rods, control unit for moving contacts, including three electromagnets with moving cores designed to control the moving contacts of vacuum arcing chambers, nodes preloaded associated with insulating rods located in the direction of the axis of movement of the vacuum arcing chambers, at om an electromagnet arranged under the corresponding chamber on the same axis with it [L.1].

Such a switch, with the apparent simplicity of kinematics, is characterized by a relatively complex design of the moving contact control unit due to the presence of a separate drive for each pole.

A useful model solves the problem of creating a high-voltage three-pole vacuum circuit breaker, characterized by simplicity of design with ease of use.

To solve the problem in a high-voltage three-pole vacuum circuit breaker containing three vacuum arcing chambers with fixed and movable contacts, a control unit for moving contacts, fastening elements of three poles,

support insulation, insulating rods, preloaded nodes associated with insulating rods located in the direction of the axis of movement of the vacuum arcing chambers, it is proposed, according to this utility model, to control the movable contacts of the vacuum arcing chambers in the form of two switching electromagnets located between the middle and extreme poles , the movable cores of the switching electromagnets are rigidly fixed on a cross-beam, common for three poles, connected to the preloaded nodes.

The utility model is illustrated by an example implementation. Figure 1 shows the inventive high-voltage three-pole vacuum circuit breaker.

The high-voltage three-pole vacuum circuit breaker contains three vacuum arcing chambers 1 in which movable and fixed contacts are placed (not shown in FIG. 1).

All three vacuum interrupter chambers are placed in one vertical plane and are mounted on the top plate 2 of the moving contact control unit with the help of the upper 3 and lower 4 insulating posts.

The control electromagnets 5 of the control unit are located at the bottom of the upper plate between the extreme and middle poles of the switch.

The movable cores 6 of the inclusion electromagnets 5 are rigidly fixed to a cross-beam 7 common to all three poles.

Traverse 7 on the one hand is connected to three vacuum interrupter chambers 1 through nodes preloaded 8 and insulating rods 9, and on the other hand is connected to a breaking spring 10.

The switch operates as follows.

When voltage is applied to the coils of the electromagnets of inclusion 5, their cores 6 are pulled in and through the yoke 7 connected through

the nodes preloaded 8 with insulating rods 9, act on the movable contacts of the vacuum arcing chambers 1, ensuring their simultaneous closure.

In the on position, the switch is fixed using the locking device of the control unit (not shown in Fig. 1).

When unlocking the locking device, the cores of the electromagnets 6 together with the traverse 7 under the action of the breaking spring 10 sharply fall down and act on the movable contacts of the vacuum interrupter chambers that open.

In accordance with the claimed decision, OOO “Research and Production Enterprise" Module "developed, manufactured and tested a prototype of a high-voltage single-pole vacuum circuit breaker type VBLK-10. The test results of this vacuum circuit breaker confirmed its operability and the possibility of practical application.

Literature:

1. Chunikhin A.A. High voltage electrical apparatus. Circuit breakers. Institute of Industrial Development "Informelectro" - M., 1996, p. 86, Fig. 43.

Claims (1)

High-voltage three-pole vacuum circuit breaker containing three vacuum arcing chambers with fixed and movable contacts, a moving contact control unit, three-pole fastening elements, support insulation, insulating rods, preload nodes associated with insulating rods located in the direction of the axis of movement of the vacuum arcing chambers, characterized the fact that the control unit of the movable contacts of the vacuum interrupter chambers is made in the form of two switching electromagnets located between ednim and extremes, movable cores of the electromagnets turn rigidly secured to the common three-pole yoke connected to the compression of the units.