CN2261671Y - Arcless current converting, silencing and energy saving A.C. contactor - Google Patents
Arcless current converting, silencing and energy saving A.C. contactor Download PDFInfo
- Publication number
- CN2261671Y CN2261671Y CN 96235502 CN96235502U CN2261671Y CN 2261671 Y CN2261671 Y CN 2261671Y CN 96235502 CN96235502 CN 96235502 CN 96235502 U CN96235502 U CN 96235502U CN 2261671 Y CN2261671 Y CN 2261671Y
- Authority
- CN
- China
- Prior art keywords
- contactor
- coil
- current
- contact
- release
- 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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Abstract
The utility model relates to an arcless current converting, silencing and energy saving AC contactor which comprises a casing body, an iron core, an armature, a main contact, auxiliary contacts, an arc extinguishing chamber, a coil, an electronic component assembly and a current switch normally closed contact, wherein, the electronic component assembly is composed of a rectifier circuit, a freewheeling diode, an over-voltage protection voltage-sensitive resistor, a current-limiting resistor and a capacitor. The utility model has the advantages that the utility model has realized the purpose of arcless current conversion and needs not to adjust over travel of the current switch normally closed contact.
Description
The utility model belongs to the electroporation field, further relates to the no arc current change type energy-saving silencing A.C. contactor in a kind of electric switch field.
The power consumption overwhelming majority of common A.C. contactor is by the magnetic hysteresis loss in the magnetic conductor and eddy current loss and divided magnetic ring generation.In order to save this part energy, can solve by two kinds of approach.The one, adopt machinery or permanent magnetism snap close mode, i.e. after the contactor energising closure, by mechanical system or permanent magnetism suction contactor is remained on make position, and coil can cut off the power supply, to reach purpose of saving.But this mode complex structure, the pressure between contact is difficult for assurance, and needs trip gear, thereby the cost height, complex process.The 2nd, keep the interchange adhesive of common A.C. contactor, interchange working method to change into the direct current adhesive, direct current keeps working method.In the technical scheme in the past, more or less exist weak point, when for example opened the current conversion contact, arc erosion was serious, and the life-span reduces; It is big that contact overtravel is adjusted workload; Adopt piezo-resistance as the continued flow component DeGrain, and consume portion of energy in vain; The contactor disjunction has time-delay, arcing time lengthening between main contact, and the contact material electrical wear increases, and reduce useful life; Overvoltage Limiting measure imperfection; The coil winding complex process, copper consumption is big.
The purpose of this utility model is to provide a kind of novel A.C. contactor, and it has the characteristics of no arc current conversion, energy-saving silencing.
The utility model comprises housing, iron core, armature, main contact, auxiliary contact, arc control device, coil, electronic element assembly and current conversion normally-closed contact.Electronic element assembly comprises rectification circuit, fly-wheel diode, overvoltage protection piezo-resistance, current-limiting resistance, electric capacity.The input cross-over connection of rectification circuit is on AC power.Normally-closed contact is connected with release-push terminal and contactor coil with after electric capacity is in parallel, and cross-over connection is in the output of rectification circuit then.The part that the release-push terminal is connected with coil also connects diode and piezo-resistance.Diode is with after resistance is connected, and on the end that is connected on AC power, the other end is connected to the non-coil sides of release-push terminal.
The utility model will be further described below in conjunction with accompanying drawing.
Fig. 1 is the electrical schematic diagram of the utility model electronic element assembly.
Diode D
1, D
2, D
3, D
4Connect by the bridge rectifier mode, its AC side cross-over connection is on AC power.Alternating current is behind bridge rectifier, and the output of its direct current is added on release-push terminal SA, the normally-closed contact K of contactor coil L and the series connection with it circuit in parallel with capacitor C.Release-push terminal SA and coil L series circuit are connected to sustained diode
5With piezo-resistance R
1, diode D
6With current-limiting resistance R
2After the series connection, on the end that is connected on AC power, the other end is connected to the non-coil sides of release-push terminal SA.When contactor was in the off-position, SA and K were in closure state.When contactor get electric after, provide the direct current starting current through bridge rectifier to coil L.Along with the closed action of contactor, normally-closed contact K opens, and coil L changes the little electric current power supply of half-wave over to.Diode D
5Be continued flow component, piezo-resistance R
1Be over-voltage protection element.Contactor release-push SA is near coil L, reaching the purpose of quick disjunction, and adopts unicoil, and not only the technique for coiling of coil is simple, and has reduced copper consumption greatly.
The characteristics of this technical scheme maximum are at normally-closed contact K two ends and connect an electric capacity.K opens when normally-closed contact, when starting current is converted to holding current, originally the electric current of contact K of flowing through turns to the electric capacity charging, make contact K disjunction under the no-load situation, eliminated the condition that electric arc produces, thereby reach the purpose of no arc current conversion, eliminated the electrical wear of contact K, improved the reliability and the life-span of contact work.When electric capacity charging finishes and since electric capacity every straight effect, make circuit change little electric current over to and keep the stage.Because of the electric capacity charging needs the regular hour, thereby delayed by the time of starting current to the holding current conversion.This has delayed to be equivalent to increase the overtravel of contact K, thereby has also overcome the current conversion that exists in the conventional art scheme and cause closed failure too early, and needs to adjust the drawback of contact overtravel.
When release-push SA disconnects contactor is had no progeny quick the branch, contact K recovers closure state, thereby makes the capacitor C discharge, carries out the preparation that starts once more.In a word, and after connecing electric capacity, not only eliminate the electric arc between the contact, and increased the reliability of contactor closure greatly.
This technical scheme is through the CJ20-63,100,160,250,400,630 of the unified design in the whole nation, and coil voltage is that 220/380V tests on the A.C. contactor of 12 kinds totally, reached fully that no arc current is changed and the purpose of energy-saving silencing.Average meritorious power saving rate reaches about 90%, and coil temperature rise and noise are very low, and power factor is very high, and effect is very obvious.Electronic package is in the former contactor coil lead-out wire terminal board of transforming a little, and overall dimension and installation foot are very little identical with former CJ20 A.C. contactor, and interchangeability is strong.
Claims (1)
1, no arc current change type energy-saving silencing A.C. contactor, comprise housing, iron core, armature, main contact, auxiliary contact, arc control device, coil, electronic element assembly and current conversion normally-closed contact, it is characterized in that: the input cross-over connection of the rectification circuit in the electronic element assembly is on AC power, normally-closed contact is with after electric capacity is in parallel, connect with release-push terminal and contactor coil, cross-over connection is in the output of rectification circuit then, the part that the release-push terminal is connected with coil also connects diode and piezo-resistance, diode is with after resistance is connected, on the end that is connected on AC power, the other end is connected to the non-coil sides of release-push terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96235502 CN2261671Y (en) | 1996-01-05 | 1996-01-05 | Arcless current converting, silencing and energy saving A.C. contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96235502 CN2261671Y (en) | 1996-01-05 | 1996-01-05 | Arcless current converting, silencing and energy saving A.C. contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2261671Y true CN2261671Y (en) | 1997-09-03 |
Family
ID=33911527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96235502 Expired - Fee Related CN2261671Y (en) | 1996-01-05 | 1996-01-05 | Arcless current converting, silencing and energy saving A.C. contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2261671Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004023505A1 (en) * | 2002-09-04 | 2004-03-18 | Chint Group Corporation | A controller for electromagnetic systems of current contactors |
| CN103871783A (en) * | 2014-03-31 | 2014-06-18 | 宁波市镇海华泰电器厂 | Power-saving circuit of alternating current contactor |
-
1996
- 1996-01-05 CN CN 96235502 patent/CN2261671Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004023505A1 (en) * | 2002-09-04 | 2004-03-18 | Chint Group Corporation | A controller for electromagnetic systems of current contactors |
| CN103871783A (en) * | 2014-03-31 | 2014-06-18 | 宁波市镇海华泰电器厂 | Power-saving circuit of alternating current contactor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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 |