CN2214702Y - Arc eliminating a.c contactor - Google Patents
Arc eliminating a.c contactor Download PDFInfo
- Publication number
- CN2214702Y CN2214702Y CN 94224011 CN94224011U CN2214702Y CN 2214702 Y CN2214702 Y CN 2214702Y CN 94224011 CN94224011 CN 94224011 CN 94224011 U CN94224011 U CN 94224011U CN 2214702 Y CN2214702 Y CN 2214702Y
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- CN
- China
- Prior art keywords
- contactor
- alternating current
- utility
- model
- contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model relates to an arc eliminating alternating current contactor, which comprises non-loss electronic alternating current switches which the three phases of an alternating current contactor are respectively connected with. The non-loss electronic alternating current switches adopt a bidirectional thyristor. The utility model is characterized in that two main electrodes T1 and T2 of the thyristor are respectively connected with two static contacts C1 and C2 of the main contacts of the alternating current contactor and control end C thereof is connected with any moving contact C'of two moving contacts of the main contacts of the alternating current contactor. The utility model reliably plays the role of an arc eliminating function and simultaneously has the advantages of simple structure, low cost, strong applicability and light weight.
Description
The utility model relates to a kind of A.C. contactor, and it is the alternating-current switch control element of various ac power distribution systems, automatic control system.
The weak point of existing alternating-current switch control element: 1, disconnecting link class switch: this class switch can only manual operation, is not suitable for using in the place of high-power and automatic control system frequent movement; 2, conventional AC contactor: in its use, the contact will produce electric arc and spark when break-make, makes contact endurance be subjected to very big restriction, brings serious hidden danger for the functional reliability of automation control system, and brings severe contamination to electrical network; 3, Arcless AC Contactor: complex structure, cost height, corresponding applicability be relatively poor, be not suitable for large-scale production; 4, E-communication contactor: its moment overload capacity poor, cost height, Control current complexity and switch itself are wanted consumed power, use to be subjected to certain limitation.
The purpose of this utility model is to design a kind of simple in structure, cost is low, applicability is wide, safe and reliable extinguishing arc A.C. contactor.
The purpose of this utility model is achieved in that composition of the present utility model includes the sub-alternating-current switch of no power consumption that connects respectively on the A.C. contactor three-phase, the sub-alternating-current switch of no power consumption is selected bidirectional triode thyristor for use, its structural feature is: silicon controlled two main electrode T1 are connected with C2 with two fixed contact C1 of A.C. contactor main contact respectively with T2, and any contact C ' in two moving contacts of its control end G and A.C. contactor main contact is connected.Its course of work is: in the connection process, no-voltage produces between fixed contact C1, the C2 of main contact and the moving contact C ', thereby controllable silicon is inoperative.C1 and C2 and C ' have just separated when producing faint electric arc in breaking course, cause between C1 and C ' and C2 and the C ' and produce voltage difference, this voltage difference triggers the controllable silicon conducting, at this moment big electric current flows through by controllable silicon, and A.C. contactor main contact almost no current passes through, thereby the electric arc between dynamic and static contact is eliminated, when electric arc disappears, then the silicon controlled trigger voltage also disappears, and controllable silicon turn-offs, and does not have the hard arc shutoff thereby reach A.C. contactor.
The utility model compared with prior art has the following advantages:
Simple in structure, cost is low, reliability is high, applicability is strong, simultaneously volume is little, in light weight, extinguishing arc is effective, be fit to large-scale production.
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is a structural representation of the present utility model.C1, C2 are respectively the fixed contact of A.C. contactor one phase main contact among the figure, and C ' is a moving contact; T1, T2 are the silicon controlled main electrode, and G is the control utmost point; Rv is a piezo-resistance, and R is that controllable silicon triggers resistance.
As shown in Figure 1: composition of the present utility model includes each sub-alternating-current switch of no power consumption that is connected at A.C. contactor, the sub-alternating-current switch of no power consumption is selected bidirectional triode thyristor for use, silicon controlled two main electrode T1 are connected with fixed contact C1, the C2 of the every main contact mutually of A.C. contactor respectively with T2, and its control end G is connected with the moving contact C ' of the main contact of A.C. contactor; Utilize the fireballing principle of controllable silicon conducting, when just faint electric arc having been arranged between active, fixed contact, can eliminate electric arc at once, thereby the no hard arc of finishing A.C. contactor disconnects; Be parallel with piezo-resistance Rv protection controllable silicon with controllable silicon simultaneously, increased reliability of the present utility model.
Claims (2)
1, a kind of extinguishing arc A.C. contactor, its composition includes the sub-alternating-current switch of no power consumption that connects respectively on the A.C. contactor three-phase, the sub-alternating-current switch of no power consumption is selected bidirectional triode thyristor for use, it is characterized in that: silicon controlled two main electrode T1 are connected with C2 with two fixed contact C1 of A.C. contactor main contact respectively with T2, and any contact C ' is connected in two moving contacts of its control end G and A.C. contactor main contact.
2, extinguishing arc A.C. contactor according to claim 1 is characterized in that the controllable silicon two ends are parallel with piezo-resistance Rv.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94224011 CN2214702Y (en) | 1994-07-02 | 1994-07-02 | Arc eliminating a.c contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94224011 CN2214702Y (en) | 1994-07-02 | 1994-07-02 | Arc eliminating a.c contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2214702Y true CN2214702Y (en) | 1995-12-06 |
Family
ID=33837540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94224011 Expired - Fee Related CN2214702Y (en) | 1994-07-02 | 1994-07-02 | Arc eliminating a.c contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2214702Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010139190A1 (en) * | 2009-06-03 | 2010-12-09 | Guo Qiaoshi | Surge-free arc extinguishing device |
-
1994
- 1994-07-02 CN CN 94224011 patent/CN2214702Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010139190A1 (en) * | 2009-06-03 | 2010-12-09 | Guo Qiaoshi | Surge-free arc extinguishing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhang Jiong Document name: payment instructions |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |