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Output circuit device of self-controlled breaking protective signal relay

A relay output and open circuit protection technology is applied to emergency protection circuit devices, automatic disconnection emergency protection devices, circuit devices, etc.

Inactive Publication Date: 2008-12-03
余彦中
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current main circuit break protection circuit, the protection function is incomplete if the relay is used, and the cost is high if the electronic circuit is used, making it difficult to popularize and apply

Method used

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  • Output circuit device of self-controlled breaking protective signal relay
  • Output circuit device of self-controlled breaking protective signal relay
  • Output circuit device of self-controlled breaking protective signal relay

Examples

Experimental program
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Embodiment Construction

[0027] The present invention is described in detail below in conjunction with accompanying drawing:

[0028] In Figure 1, the overvoltage relay g and the first undervoltage relay q 1 In series, one end of the start switch Kq is connected to the overvoltage relay g and the first undervoltage relay q 1 node, the other end is short-circuited with the overvoltage relay g so that the first undervoltage relay q 1 Power on and close.

[0029] The working principle of Figure 1 is: according to the patented technology of "Lack of Phase, Undervoltage, Overvoltage Circuit Breaking Protection Circuit" (application number 01128945.7), it is used in AC contactors. Undervoltage relay contact switch in coil circuit q 1 'or the overvoltage relay contact switch g' is disconnected to disconnect the main circuit.

[0030] In Figure 2, the voltage doubler overvoltage relay G uses the overvoltage relay g as the load of the first voltage doubler rectifier power supply, and is composed of the fir...

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PUM

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Abstract

The disclosed circuit device is composed of cascaded overvoltage relay and undervoltage relay, as well as short circuit overvoltage relay, which arranges the undervoltage relay to turn on for the time being. The disclosed circuit device is capable of playing reliable function of safeguard protection for main circuit and load, especially when motor in condition of phase line miss, undervoltage, overvoltage.

Description

technical field [0001] The invention relates to an output circuit device of a self-control circuit-break protection signal relay used in a self-control circuit-break protection circuit for protecting a circuit and its load from disconnecting a main circuit due to phase loss, undervoltage or overvoltage. Background technique [0002] The current main circuit disconnection protection circuit has incomplete protection function if the relay is used, and the cost is relatively high if the electronic circuit is used, making it difficult to popularize and apply. Contents of the invention [0003] The purpose of the present invention is to provide a self-control circuit break protection signal relay output circuit device used in the self-control circuit break protection circuit, which can protect the main circuit and its load when there is a phase loss, undervoltage or overvoltage during the operation of the main circuit. , especially the motor plays the role of circuit breaker pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H3/253H02H3/24H02H3/20H02H7/09
Inventor 余彦中
Owner 余彦中