Fuse type disconnecting switch

A technology of isolating switches and fuses, which is applied in the direction of electric switches, high-voltage air circuit breakers, air switch components, etc., can solve the problems of unable to meet the space requirements of complete sets of equipment, large size, etc., to solve the problem of unsafe on-load operation, wide The effect of small size and cost reduction

Pending Publication Date: 2021-10-01
SHANGHAI LIANGXIN ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of isolating switch is arranged sequentially in phase A, B and C in the width direction, and the size in the width direction is very large, which cannot meet the space requirements in the width direction when the complete set of equipment is installed.

Method used

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  • Fuse type disconnecting switch
  • Fuse type disconnecting switch
  • Fuse type disconnecting switch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0026] as attached figure 1 , 2 and 3 A fuse-type isolating switch, including a housing 1, a driving mechanism 2, a moving contact 3, a contact support 4, a contact inlet terminal 5, a contact outlet terminal 6, an upper static contact 7 and A fuse 8, wherein the driving mechanism 2 is installed on the housing 1 and can rotate on the housing 1, and the driving mechanism 2 is installed in a mounting hole on one side end of the housing 1 101 and can rotate in the first mounting hole 101. In this embodiment, specifically, as attached Figure 4 , as shown in 5 and 6, the driving mechanism 2 includes a driving square shaft 201, the driving square shaft 201 is located in the first mounting hole 101, and the driving lever 202 is mounted on the driving square shaft 201 and can be The driving square shaft 201 is driven to rotate, one end of the connecting rod 206 is hinged with the contact support 4, the other end is provided with a waist-shaped hole 206a, and the driving lever 202 i...

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Abstract

A fuse type disconnecting switch comprises a shell (1), a driving mechanism (2) is installed on the shell (1) and can rotate on the shell (1), a plurality of moving contacts (3) are fixedly installed on a contact support (4), the contact support (4) is installed in the shell (1), the driving mechanism (2) can drive the contact support (4) to slide back and forth in the shell (1) in the rotating process, and the contact support (4) can drive the two ends of the multiple moving contacts (3) fixed to the contact support (4) to be connected with or separated from the multiple corresponding upper static contacts (7), the contact wire inlet ends (5) and the contact wire outlet ends (6) in the back-and-forth sliding process in the shell (1). The whole disconnecting switch is small in size in the width direction and low in cost, the problem of insufficient space layout of complete equipment is solved, one switch cabinet can be provided with a plurality of isolating switches, and the cost of the switch cabinet is reduced; and the fuse is provided with the disconnecting switch capable of being quickly switched on and off, so that the technical problem of unsafe on-load operation of the fuse is solved.

Description

technical field [0001] The invention belongs to the technical field of isolating switches, and in particular relates to a fuse type isolating switch Background technique [0002] In order to provide circuit breaker protection and overcurrent protection for power transmission and distribution circuits, it is usually necessary to connect fuses in series in the power distribution circuit as protective devices, and at the same time, it is necessary to install an isolating switch and control the circuit through frequent manual operations. In a circuit with a small current, a fuse and a disconnector are usually combined to protect and control the circuit. This combination is called a disconnector-fuse group or a fuse-type disconnector. [0003] The traditional fuse-type isolating switch does not have a self-contained isolating switch, and cannot be disconnected quickly. When disconnecting, the fuse needs to be pulled out manually, and arcing occurs when the operation is live, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H31/12H01H31/02
CPCH01H31/122H01H31/026
Inventor 任山波
Owner SHANGHAI LIANGXIN ELECTRICAL
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