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Output circuit device of self-controlled breaking protective signal relay

A technology of relay output and open circuit protection, applied in the direction of emergency protection circuit device, automatic disconnection emergency protection device, circuit device, etc.

Inactive Publication Date: 2005-01-12
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, and the circuit is complicated and bulky, 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

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Embodiment Construction

[0024] The present invention is described in detail below in conjunction with accompanying drawing:

[0025] In Figure 1, overvoltage relay g and undervoltage relay q 1 Connected in series, one end of start switch Kq is connected to g, q 1 node, the other end makes Kq short g so that q 1 Power on and close.

[0026] The working principle of Figure 1 is: According to the patented technology of "Lack of phase. Undervoltage and overvoltage circuit breaker protection circuit" (application number 01128945.7), it is used in AC contactors. Undervoltage relay contact switch q in the circuit 1 `Or the overvoltage relay contact switch g` is disconnected to disconnect the main circuit.

[0027] In Figure 2, the overvoltage relay g is used as the load of the voltage doubler rectifier power supply, and the shunt resistor Rg is connected in parallel with g to correct the overvoltage value—this circuit structure is referred to as "voltage doubler overvoltage relay" G; the undervoltage re...

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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. technical background [0002] The current circuit breaker protection circuit for the main circuit has incomplete protection functions if the relay is used, and the cost is high if the electronic circuit is used, and the circuit is complicated and bulky, 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 ...

Claims

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Application Information

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IPC IPC(8): H02H3/20H02H3/24H02H3/253H02H7/09
Inventor 余彦中
Owner 余彦中