Three-in and one-out phase-change switch

Abstract

The invention discloses a three-in and one-out phase-change switch, and relates to the technical field of phase-change switches. The three-in and one-out phase-change switch comprises a switch assembly and a wiring terminal strip, wherein the wiring terminal strip is provided with four binding posts and wiring mechanisms, the wiring mechanisms are electrically connected with the binding posts in a one-to-one correspondence manner, the input end of the switch assembly is electrically connected with the binding posts, the wiring mechanism comprises a wiring connecting base and a wiring adjusting rod, and the wiring adjusting rod is used for driving the wiring connecting base to conduct winding and fixed connection on a connecting conducting wire. According to the invention, the wiring mechanism on the wiring terminal strip is arranged to be of a combined structure with the wiring connecting base and the wiring adjusting rod, and when the connecting conducting wire is connected, the wiring adjusting rod drives the wiring connecting base to conduct winding type fixed connection on the connecting conducting wire, so that compared with an existing mode that fixing is conducted through screw fastening, the conducting wire connection contact area is obviously increased, the connection stability is improved, and the problem of poor contact is prevented.

Description

technical field [0001] The invention relates to the technical field of phase change switches, in particular to a three-input and one-out phase change switch. Background technique [0002] It is well known that there are a large number of single-phase loads in the distribution network. Due to the unbalanced distribution of single-phase loads and the asynchronous input, the imbalance of three-phase loads has become a prominent problem in the operation and maintenance of low-voltage power grids. The three-phase power system The status of voltage balance is one of the main indicators of power quality. Unbalanced three-phase will lead to additional heating and vibration of the rotating machine, increased magnetic flux leakage and local overheating of the transformer, increased line loss of the power grid, and misoperation of various protection and automatic devices, etc. , the commutation switch is a necessary device to deal with the three-phase unbalance problem on the current g...

AI Technical Summary

Problems solved by technology

[0005] The disadvantage of the prior art is that, as in the above-mentioned application, the connection structure between the terminal and the wire on the existing reversing switch is the same as that of the existing industrial wire connector, which is a section sealed in the insulating plastic. There are holes on both ends of the metal sheet to insert the wire, and then fasten or loosen it with screws. This traditional connection method uses screw fastening to connect and fix the wires. During use, the wires are prone to heating and deformation, which affects the stability of the connection. , causing the wire to fall off. At the same time, the contact surface between the wire and the metal sheet is small, which is prone to poor contact, which affects the stability of power supply and causes heat generation.

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