CN2280993Y - Moveable-contact sampling full cut-off arc-extinction module - Google Patents
Moveable-contact sampling full cut-off arc-extinction module Download PDFInfo
- Publication number
- CN2280993Y CN2280993Y CN 96233309 CN96233309U CN2280993Y CN 2280993 Y CN2280993 Y CN 2280993Y CN 96233309 CN96233309 CN 96233309 CN 96233309 U CN96233309 U CN 96233309U CN 2280993 Y CN2280993 Y CN 2280993Y
- Authority
- CN
- China
- Prior art keywords
- contact
- arc
- moving contact
- binding post
- limit winding
- 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
Links
Images
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model relates to an arc-extinction modular device of a main contact of an alternating current contactor. By using the utility model, electric arc is not generated among main contacts when the alternating current contactor continually broken off and inductively load. Accordingly, the electrical durability of each main contact obtains great improvement. The utility model can directly pick up a synchronous switch signal from a moving contact, and thus, the utility model ensures that an arc-extinction circuit can not step out. In addition, a contact which can switch off the arc-extinction module device is connected in series with the inside of the arc-extinguishing circuit, and thus, the utility model retains the insulated and the withstand voltage index of the original alternating current contactor under the condition of open circuit. The utility model can widely used in continual starting electric drive system for protecting the main contact of the alternating current contactor.
Description
The utility model relates to a kind of A.C. contactor main contact electronics arc-extinction device, especially change and reduce under the condition of former A.C. contactor performance index need not, can independently finish extinguishing arc task respectively, can disconnect a kind of device of extinguishing arc modular circuit thereafter fully again main contact.
Known electronics arc extinguishing (no arc) device is formed back and A.C. contactor main contact by thyristor and protection capacitance-resistance branch road, additional triggers circuit etc. and directly is connected in parallel and reaches arc extinguishing.As utility model patent: 92214446.X.But this class arc extinguishing (no arc) device has so same topic: the triggering mode that at first is it is got the three-phase triggering signal by what take that the auxilliary contact of former A.C. contactor unifies, so three-phase electronics arc-suppression circuit is to insert the master control load circuit simultaneously, because of the existence of the main and auxiliary clearance between open contacts machine-building of A.C. contactor tolerance, the phenomenon that triggering signal has the control step-out takes place.If auxilliary contact is than the first connection of main contact, electronics arc extinguishing this moment (no arc) installs the impact that will bear controlled load starting electric current, and is poor because of thyristor overload capacity, and it is very disadvantageous allowing its insert starting current.If auxilliary contact than the first disconnection of main contact, must cause the arc extinguishing failure.Next is after A.C. contactor cut-offs, because electronics arc extinguishing (no arc) device is directly with main contact and connects, existence because of thyristor reverse leakage current and capacitance-resistance branch current, so reduced insulation and withstand voltage index after former A.C. contactor cut-offs, make the main contact leading-out terminal after cut-offfing still charged, this is very dangerous one in addition, go in short time to observe from the access of A.C. contactor main contact and the utmost point of disjunction, its access and breaking course are not exclusively synchronous, adopt same auxilliary contact to trigger thyristor and are difficult to accomplish that three-phase follows separately synchronously.
The purpose of this utility model is that a kind of improved extinguishing arc modular device that can independently follow moving contact synchronous operation respectively will be provided, it can prevent effectively that the phenomenon of electronics arc extinguishing (no arc) device triggering signal step-out from taking place, and can disconnect the extinguishing arc modular circuit again fully after extinguishing arc.
The purpose of this utility model is achieved in that it directly draws holding wire from the A.C. contactor moving contact, therefore, just directly the connection and the disjunction of moving contact is synchronous fully mutually with this for the being and not being of signal, so and the machine-building tolerance of opening distance between main and auxiliary contact have nothing to do.Thereby prevented the generation of step-out phenomenon effectively.The utility model has sealed in a current over-zero and has cut-off contact (K in being connected in parallel with main contact
2'), guaranteed also following disconnection extinguishing arc modular circuit after the extinguishing arc process is finished.Owing to cut off the in parallel of extinguishing arc modular circuit and main contact, so guaranteed insulation and the withstand voltage electrical performance indexes of original A.C. contactor under open-circuit condition.
Owing to adopt such scheme, its only needs draw on former A.C. contactor moving contact and seals in one in a switch synchronous signal line and the crowbar circuit and cut-off contact (K
2'), so realize Synchronization Control easily and disconnect the extinguishing arc modular circuit fully, it is simple in structure, implements easily.
Below in conjunction with description of drawings, structure of the present utility model and operation principle further are illustrated.
Fig. 1 is structure of the present utility model and circuit theory diagrams.
Fig. 2 is that the utility model is used for three-phase ac contactor main contact catenation principle figure.
Referring to Fig. 1, the structure of the disconnected extinguishing arc module of standard-sized sheet is by insulation crust (10) and be positioned at moving contact signal terminal (1) of case surface, zero line binding post (2), electric power incoming line fixed contact binding post (3), power outlet fixed contact binding post (4), indirect tentaculum (K is carried out in extinguishing arc branch switch control signal output wiring terminal (5) and (6), extinguishing arc branch switch control signal
2) and place inner compositions such as electronic switch circuit.
According to Fig. 1 electronic circuit, when A.C. contactor main contact KM adhesive is connected, the A phase voltage is by fixed contact (7), moving contact (9), be incorporated into the former limit winding W of synchronizing signal transformer TBY through terminal (1), the other end of W links to each other with zero line binding post (2), so when moving contact (9) is connected, TBY is electricly also synchronous, pays limit winding W
1, W
2, W
3Also export this synchronous voltage signal simultaneously, because of W
1Termination thyristor T of the same name
1Negative electrode, W
2Non-same polarity meet thyristor T
2Cathode, so, work as T
2When being in power supply just partly with week, W
2End of the same name for just, it makes T
2Conducting, on the contrary make T
1Conducting.In order there to be enough trigger currents to make T
1, T
2Conducting is respectively at T
1, T
2The control utmost point and anode between be serially connected with little power consumption and trigger thyristor T
1', T
2'.C in the circuit
1, C
2, R, C make for anti-interference.W meanwhile
3The synchronizing voltage of winding output provides one to allow thyristor T to photoelectric coupled circuit G after full-wave rectifying circuit D rectification
3The synchronous triggering signal of conducting makes T
3The indirect tentaculum K that switches on and off the extinguishing arc modular circuit is carried out in conducting synchronously
1Adhesive, its contact (K
2') closure, the thyristor T in the extinguishing arc modular circuit
1, T
2Directly be parallel between A.C. contactor fixed contact (7) and (8), get ready for elimination contact (9) disjunction inductive load electric current produces electric arc.At this moment, because main contact KM and middle probe of contactor (K
2') connect, it makes the thyristor T in extinguishing arc module terminals (3), (4)
1, T
2By short circuit.So the two ends no-voltage is not all worked, electric current directly flows into controlled load through KM.
When the KM disjunction, moving contact (9) will leave fixed contact (7) and (8), T
1, T
2Both end voltage will be from zero rise, and when rising to the thyristor conducting voltage, phase place is decided during according to disjunction, and it can be T
1Or T
2Conducting, thus the electrical power that produces electric arc is shifted to continuing to flow to the electric current of controlled load, and when current over-zero, thyristor automatically shuts down, meanwhile, and the TBY dead electricity, because of no synchronous triggering signal, T
3Turn-off indirect tentaculum (K
1) dead electricity, contact (K
2') no flow point is disconnected, finish extinguishing arc and cut off the task of extinguishing arc modular circuit.When contact (9) was connected spring, the extinguishing arc modular circuit was also in like manner worked.
Claims (5)
1, the disconnected extinguishing arc module of a kind of standard-sized sheet of moving contact sampling, thyristor T1 is arranged, T2 polarity is parallel to A.C. contactor fixed contact two ends on the contrary, it is characterized in that the A.C. contactor moving contact is through the former limit winding W of terminal introducing synchronizing signal to transformer TBY, the other end of W is connected with the zero line binding post, the negative electrode of the termination thyristor T1 who pays limit winding W1 of TBY, T2, T
1Anode, meet T through capacitor C 1
1Negative electrode, another termination T of W1
1The control utmost point, negative electrode and the T of the termination thyristor T2 who pays limit winding W2 of TBY
1, T
1Anode, meet T through capacitor C 2
2Negative electrode, another termination T of W2
2The control utmost point, the control utmost point of T2 is connected to T
2Negative electrode and C2 between, the control utmost point of T1 is connected to T
1Negative electrode and C1 between.
2, the disconnected extinguishing arc module of the standard-sized sheet of a kind of moving contact sampling according to claim 1 is characterized in that capacitor C, and the series circuit one of resistance R is terminated at pays limit winding W1, and the other end is connected to pays limit winding W2.
3, the disconnected extinguishing arc module of the standard-sized sheet of a kind of moving contact sampling according to claim 1 and 2, photoelectric coupled circuit G is imported in the output of paying limit winding W3 that it is characterized in that synchrotrans TBY after full-wave rectifying circuit D rectification, the end of the input termination former limit winding W of G, the control end of the output termination thyristor T3 of G, the end of T3 is through indirect tentaculum Kz and contact K thereof
2Connect the fixed contact of A.C. contactor, the former limit winding W of another termination TBY of T3.
4, the disconnected extinguishing arc module of the standard-sized sheet of a kind of moving contact sampling according to claim 1 and 2, it is characterized in that moving contact signal terminal (1) is arranged on the insulation crust (10), zero line binding post (2), electric power incoming line fixed contact binding post (3), power outlet fixed contact binding post (4), module be being parallel in the three-phase ac contactor main contact of monomer respectively.
5, the disconnected extinguishing arc module of the standard-sized sheet of a kind of moving contact sampling according to claim 3, it is characterized in that moving contact signal terminal (1) is arranged on the insulation crust (10), zero line binding post (2), electric power incoming line fixed contact binding post (3), power outlet fixed contact binding post (4), module be being parallel in the three-phase ac contactor main contact of monomer respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96233309 CN2280993Y (en) | 1996-06-24 | 1996-06-24 | Moveable-contact sampling full cut-off arc-extinction module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96233309 CN2280993Y (en) | 1996-06-24 | 1996-06-24 | Moveable-contact sampling full cut-off arc-extinction module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2280993Y true CN2280993Y (en) | 1998-05-06 |
Family
ID=33910030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96233309 Expired - Fee Related CN2280993Y (en) | 1996-06-24 | 1996-06-24 | Moveable-contact sampling full cut-off arc-extinction module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2280993Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103325626A (en) * | 2013-06-19 | 2013-09-25 | 辽宁工程技术大学 | Arc-free alternating current contactor with disconnecting gaps |
-
1996
- 1996-06-24 CN CN 96233309 patent/CN2280993Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103325626A (en) * | 2013-06-19 | 2013-09-25 | 辽宁工程技术大学 | Arc-free alternating current contactor with disconnecting gaps |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107834505B (en) | The artificial zero passage high voltage DC breaker of current-limiting type self-charging type and its cutoff method | |
| CN106057566B (en) | A kind of combination switch and its working method for high-voltage capacitance switching | |
| CN108092243B (en) | A kind of hybrid dc circuit breaker of capacitive buffer type | |
| CN211505653U (en) | Intelligent electric energy meter phase sequence reverse cutting device | |
| CN210297244U (en) | Fast DC switch | |
| CN2280993Y (en) | Moveable-contact sampling full cut-off arc-extinction module | |
| CN208208691U (en) | Interpolar connecting plate for multipole circuit breaker | |
| CN201716400U (en) | Test loop for being tangent to high-voltage circuit breaker of back to back capacitor unit | |
| CN201985532U (en) | Intelligent composite integrated switch | |
| CN205453109U (en) | Two line user phasing switch devices of low pressure | |
| CN206313524U (en) | Avoid the automatic change-over of neutral pole dangerous voltage | |
| CN214798851U (en) | Three-phase alternating current phase sequence automatic switching and protecting device | |
| CN210269931U (en) | Operation control power supply circuit based on micro switch | |
| CN209994091U (en) | Switch cabinet control device with arc and harmonic elimination functions | |
| CN203039345U (en) | Self-reset bipolar control overvoltage and undervoltage protection device | |
| CN100429850C (en) | Self-controlled circuit break protective circuit | |
| CN215817534U (en) | Power distribution device | |
| CN216310588U (en) | Single-stirring four-flushing sewage treatment control system | |
| CN217935137U (en) | Hierarchical load switching circuit controlled by BMS | |
| CN213879668U (en) | Reactive current transformer | |
| CN216215856U (en) | Circuit capable of automatically switching phase sequence | |
| CN203014657U (en) | Soft charging device used for high voltage frequency converter | |
| CN216794627U (en) | Three-phase low-voltage regulator | |
| CN213879287U (en) | 0.4KV intelligent phase control load switch | |
| CN216362113U (en) | Hybrid switch isolating device |
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 |