A modular vacuum magnetic starter

Abstract

The invention discloses a modular vacuum magnetic starter. The modular vacuum magnetic starter is provided with a starter body, wherein the starter body comprises a contactor 1 and a controller 2, the contactor 1 is provided with a contactor shell 3, three containing cavities are arranged in the contactor shell 3 in sequence from top to bottom, an electromagnetic device 4, a vacuum pipe 6 connected with the electromagnetic device 4 through a connecting mechanism 5 and a current transformer 7 connected with the vacuum pipe 6 are arranged in each containing cavity, the controller 2 is provided with a controller box 8 which is matched with the contactor shell 3, an electric wire is connected between the controller box 8 and the contactor shell 3, and the controller box 8 and the contact shell 3 are locked together through a locking mechanism. The modular vacuum magnetic starter has the advantages that the size is small, maintenance is convenient, a control system is arranged, and mechanical and electronic integration is achieved.

Description

technical field [0001] The invention relates to the technical field of magnetic starters, in particular to a modular vacuum magnetic starter. Background technique [0002] As we all know, the contactor in the magnetic starter has a voltage of 3300V, 1140V, 660V, and 380V, and has a wide range of uses. The existing magnetic starter is composed of independent contactor body, intermediate relay, intrinsically safe plug-in, magnetic protector and other related components, and the contactor in the traditional magnetic starter is generally an electromagnet with three phases (pieces) Vacuum tubes, although the modular contactor has three electric holding electromagnets (hereinafter referred to as electromagnets), each with three vacuum tubes, but the electromagnets of the existing modular contactors generally have three reaction force springs. At that time, the pulling force is enough to separate the vacuum tube from the main circuit. Common electromagnet reaction force springs a...

AI Technical Summary

Problems solved by technology

If the reaction force spring is outside the electromagnet, after the outer frame of the module is closed, when the vacuum tube and the electromagnet are locked, fine-tuning the opening distance and overtravel of the contactor will easily cause the electromagnet to rub against the conductive tissue of the vacuum tube, resulting in Electromagnet magnetic cylinder electrification endangers personal safety

Therefore, the existing magnetic starter has defects such as large volume, many and complicated circuits, many fault points that are difficult to troubleshoot, inconvenient maintenance, cumbersome replacement of components and inability to guarantee personal safety, etc.

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