Method for eliminating contact arcs of DC device as well as device and application thereof

A contact and arc technology, which is applied to circuits, relays, electrical components, etc., can solve the problems of complex DC circuit breakers, affecting service life, and hindering safety.

Active Publication Date: 2016-02-03
柳州螺山科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing contact type DC circuit breakers and DC contactors will generate a certain arc, which not only affects their service life but also hinders safety. Especially in the case of high D

Method used

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  • Method for eliminating contact arcs of DC device as well as device and application thereof
  • Method for eliminating contact arcs of DC device as well as device and application thereof
  • Method for eliminating contact arcs of DC device as well as device and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] 1. Basic principles (taking the semiconductor element as a triode as an example)

[0026] 1. Circuit structure

[0027] like figure 1 As shown, the device for eliminating the arc of the DC device contacts in the present invention includes a moving contact Mc and a fixed contact CC, and also includes a hysteresis breaking contact J, a transistor Q, a capacitor C, and a charging and discharging resistor R, and the fixed contact CC and the transistor Q The collector of the triode Q is connected to the capacitor C, the charging and discharging resistor R is connected in parallel between the emitter and the base of the triode Q, and the emitter of the triode Q is connected to the hysteresis breaking contact J. Compared with conventional contact breaking, this device adds triode Q, capacitor C, charging and discharging resistance R and hysteresis breaking contact J, and subtracts the arc extinguishing cover.

[0028] 2. Method process

[0029] The method of using the above...

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PUM

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Abstract

The invention discloses a device for eliminating contact arcs of a DC device. The device comprises a moving contact Mc, a fixed contact CC, a lag break contact J, a semiconductor component, a capacitor C and a charging and discharging resistor R, wherein the fixed contact CC is connected with the input pole of the semiconductor component; the base pole of the semiconductor component is connected with the capacitor C; the charging and discharging resistor R is connected between the output pole of the semiconductor component and the base pole of the semiconductor component in parallel; and the output pole of the semiconductor component is connected with the lag break contact J. The lag break contact J is additionally arranged, the operation of the semiconductor component is started by the lag break contact J, the turn-off performance of the semiconductor component is fully utilized in the lag break process, the direct current is broken safely and reliably, and thus the purpose of eliminating the arcs in the breaking process is achieved. The device and the method thereof are suitable for high-voltage or low-voltage DC breakers, DC contactors and DC sockets, and are higher in practicability.

Description

technical field [0001] The invention belongs to the technical field of electric device contact arc extinguishing in a direct current circuit, and in particular relates to a method for eliminating direct current device contact arc and its device and application. Background technique [0002] Existing contact-type DC circuit breakers and DC contactors will generate a certain amount of arc, which not only affects their service life but also hinders safety. Especially in the case of high DC voltage, the problem of arcing is more prominent, and arc extinguishing measures are very necessary. The hybrid DC circuit breaker has certain difficulties in actual use due to its complex circuit. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a simple in principle, scientifically effective, safe and reliable method for eliminating the contact arc of a DC device and its device and application. [0004] In order to solve the abo...

Claims

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Application Information

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IPC IPC(8): H01H50/54
CPCH01H50/541
Inventor 沈红沈易沈治民
Owner 柳州螺山科技有限公司
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