Electromagnetic switch capable of switching delta-shaped and Y-shaped connection modes

A technology of electromagnetic switch and connection method, applied in the direction of motor generator/starter, starter of a single multi-phase induction motor, etc., can solve the problems of troublesome installation and wiring, high cost, and achieve simple installation and wiring, low cost and stable performance. reliable results

Inactive Publication Date: 2011-08-10
山东卓尔电气有限公司
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the defects of cumbersome installation and wiring and high cost in the existing technology of using AC contactors to convert motors in △ shape and Y shape, and to provide a △ shape motor with simple installation and wiring, low cost and stable and reliable operation. Converting electromagnetic switch with Y-shape connection mode

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  • Electromagnetic switch capable of switching delta-shaped and Y-shaped connection modes
  • Electromagnetic switch capable of switching delta-shaped and Y-shaped connection modes

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Embodiment Construction

[0012] The present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

[0013] As shown in Figure 1: there are three input terminals 5-1, 5-2, 5-3 on the upper end of the casing 3, and two three-pole electromagnetic switch mechanisms 2-1, 2-2 are also arranged in the casing 3, two The three input terminals of three three-pole electromagnetic switch mechanisms 2-1, 2-2 are respectively connected with three input terminals 5-1, 5-2, 5-3, and two three-pole electromagnetic switch mechanisms 2-1, 2- The input three terminals of 2 share the current transformers 4-1, 4-2, 4-3 respectively, and the three-pole electromagnetic switch mechanisms 2-1, 2-2 are respectively provided with travel switches 1-1, 1-2, travel switches 1-1, 1-2 interlocking to ensure that only one three-pole electromagnetic switch mechanism can be connected at a time.

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Abstract

The invention particularly relates to an electromagnetic switch capable of switching delta-shaped and Y-shaped connection modes. The electromagnetic switch can change wiring methods for a motor. The electromagnetic switch comprises a shell, wherein one end of the shell is provided with three terminal blocks. The electromagnetic switch is characterized in that: two tripolar electromagnetic switch mechanisms are arranged in the shell; and the three input ends of each tripolar electromagnetic switch mechanism are connected with three input terminals respectively. The electromagnetic switch overcomes the shortcomings of troubles in mounting and wiring and high cost of the prior art in which the delta-shaped and Y-shaped connection modes of the motor are switched by an AC contactor, and has the advantages of low cost, mounting and wiring simplicity, and stable and reliable performance.

Description

technical field [0001] The invention specifically relates to an electromagnetic switch for changing the connection mode of a delta-shape and a Y-shape for changing the wiring method of a motor. Background technique [0002] Motor power saving usually adopts the method of mutual conversion between △-shaped connection and Y-shaped connection. The realization method is to use two AC contactors to switch each other, which is troublesome and costly to install and connect. It is easy to burn out when the voltage is high, and the contactor works unstable when the peak voltage of power consumption is low, which affects the reliability of the motor. Contents of the invention [0003] The purpose of the present invention is to solve the defects of cumbersome installation and wiring and high cost in the prior art of using an AC contactor to convert the △-shaped and Y-shaped connection mode of the motor, and to provide a △-shaped motor with simple installation and wiring, low cost and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P1/32
Inventor 张振功许显辉丛珩
Owner 山东卓尔电气有限公司
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