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Arc-suppression circuit of alternating-current contactor

A technology for AC contactors and arc suppression circuits, applied in circuits, relays, electric switches, etc., can solve the problems of poor arc suppression effect, high cost, complex structure, etc. volume effect

Inactive Publication Date: 2011-05-25
沈永年 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an AC contactor arc-extinguishing circuit and its control method to the field, so as to solve the technical problems of poor arc-extinguishing effect, complex structure and high cost of existing similar products

Method used

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  • Arc-suppression circuit of alternating-current contactor
  • Arc-suppression circuit of alternating-current contactor
  • Arc-suppression circuit of alternating-current contactor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Example 1, such as figure 2 , Figure 5 , Image 6 As shown: the AC contactor arc suppression circuit includes a main switch K1 and a controllable two-terminal circuit A; wherein the main switch K1 is composed of the main switch moving contact 9 and the main switch in the known AC contactor or relay 2 The left fixed contact 12 and the right fixed contact 13 of the main switch; the controllable two-end circuit A includes the auxiliary switch base 1, the auxiliary switch spring 4, the auxiliary switch K2 and the auxiliary switch movable contact slider 11, forming a fully sealed type module; wherein the auxiliary switch K2 is composed of the auxiliary switch moving contact 5, the auxiliary switch left fixed contact 7, and the auxiliary switch right fixed contact 8;

[0041] Its structural features are: inside the hollow auxiliary switch base 1, auxiliary switch spring 4, auxiliary switch movable contact slider 11, auxiliary switch movable contact 5, auxiliary switch left...

Embodiment 2

[0050] Example 2, such as image 3 , Figure 5 , Image 6 As shown: the AC contactor arc suppression circuit includes a main switch K1 and a controllable two-terminal circuit A; wherein the main switch K1 is composed of a known AC contactor or a main switch moving contact 9 in a relay 2 and a main The left fixed contact 12 of the switch and the right fixed contact 13 of the main switch are formed; the controllable two-terminal circuit A includes an auxiliary switch K2, a small relay J, a regulated power supply voltage terminal Vcc and a regulated power supply ground terminal GND; wherein the Auxiliary switch K2 is made up of auxiliary switch substrate 1, auxiliary switch spring 4, auxiliary switch movable contact 5, auxiliary switch left fixed contact 7, auxiliary switch right fixed contact 8 and auxiliary switch movable contact slider 11. The relay J is a well-known general-purpose fully sealed or vacuum-type small relay, and the voltage terminal Vcc of the regulated power ...

Embodiment 3

[0057] Example 3, such as Figure 4 , Figure 5 , Image 6 As shown: the AC contactor arc suppression circuit includes a main switch K1 and a controllable two-terminal circuit A; wherein the main switch K1 is composed of the main switch moving contact 9 in the AC contactor or relay 2 and the main switch The left fixed contact 12 and the right fixed contact 13 of the main switch are composed; the controllable two-terminal circuit A includes an auxiliary switch K2, a current limiting resistor R1, a current limiting resistor R2, a bidirectional thyristor SCR1, and a bidirectional thyristor SCR2, Wherein said auxiliary switch K2 is composed of auxiliary switch base body 1, auxiliary switch spring 4, auxiliary switch movable contact 5, auxiliary switch left fixed contact 7, auxiliary switch right fixed contact 8 and auxiliary switch movable contact slider 11, The current limiting resistor R1, the current limiting resistor R2, the bidirectional thyristor SCR1 and another bidirecti...

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Abstract

The invention provides an arc-suppression circuit of an alternating-current contactor and a control method thereof, which are used for arc-suppression of alternating-current contactors, various relays and switch appliances. The arc-suppression circuit of the alternating-current contactor comprises a main switch K1 and a controllable double-end circuit A. The arc-suppression circuit of the alternating-current contactor is characterized in that the main switch K1 is a mechanical type switch, and the controllable double-end circuit A comprises a controllable double-end circuit A, a first voltageend and a second voltage end, wherein the first voltage end and the first electrode end P1 of the main switch are at the same end, and the second voltage end and the second electrode end P2 of the main switch are at the same end; the invention better solves the technical problem of severe fire striking and arc pulling phenomena which are difficult to solve in the structure of the prior similar product, and the control method is advanced. The invention has the advantages of no arc pulling, large current-carrying capacity, low cost, long service life, small volume, convenient installation, use and replacement and extensive application range, thereby being suitable for generalization, popularization and use in the field of electric appliances.

Description

technical field [0001] The invention relates to the field of electrical appliances, and relates to an AC contactor arc suppression circuit and a control method thereof for preventing AC contactors, various relays and switching appliances from drawing arcs when they are closed or disconnected. Background technique [0002] AC contactors, various relays and switching appliances often produce arcing phenomenon when they are closed or disconnected, which not only seriously damages their switch contacts, but also causes various accident hazards to the electrical circuit; in order to eliminate the arcing phenomenon of switching appliances , there are mainly the following methods to overcome arcing in the prior art: [0003] (1) Vacuum arc extinguishing chamber or SF6 arc extinguishing device is used to eliminate arc, especially in the field of high voltage and high current. Although this kind of arc extinguishing device overcomes the arc phenomenon and can achieve better arc extin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H9/30H01H47/00
Inventor 沈永年顾诚
Owner 沈永年
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