CN2353040Y - Arc-free AC contactor - Google Patents
Arc-free AC contactor Download PDFInfo
- Publication number
- CN2353040Y CN2353040Y CN 97244356 CN97244356U CN2353040Y CN 2353040 Y CN2353040 Y CN 2353040Y CN 97244356 CN97244356 CN 97244356 CN 97244356 U CN97244356 U CN 97244356U CN 2353040 Y CN2353040 Y CN 2353040Y
- Authority
- CN
- China
- Prior art keywords
- contactor
- arc
- sensitive switch
- current
- controllable silicon
- 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
- 238000010891 electric arc Methods 0.000 claims abstract description 11
- 230000001681 protective effect Effects 0.000 claims abstract description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 22
- 229910052710 silicon Inorganic materials 0.000 claims description 22
- 239000010703 silicon Substances 0.000 claims description 22
- 230000005611 electricity Effects 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 229920001342 Bakelite® Polymers 0.000 description 5
- 239000004637 bakelite Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 235000009470 Theobroma cacao Nutrition 0.000 description 1
- 244000240602 cacao Species 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Images
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
An arc-free AC contactor is composed of AC contactor and electronic circuit parts (SCR and its control circuit, protection circuit). The arc-free control operation is realized by arranging micro-switches of control circuits on the fixing plates of the auxiliary contacts on two sides of the alternating current contactor, locating the lower edges of two sides in the sliding grooves of the fixing plates of the auxiliary contacts, and simultaneously controlling the on-off of the micro-switches by the sliding blocks for controlling the on-off of the auxiliary contacts. And effective protective measures are adopted. Therefore, it has outstanding advantages over the prior art products: firstly, no electric arc exists, the contact is good, and the equipment is protected; secondly, no electric wear exists, and the service life is long; thirdly, arc heat is not generated, electricity and energy are saved; fourthly, protective measures are provided, and safety and reliability are achieved.
Description
The utility model relates to a kind of no electric arc alternating current contactor.
The existing employing in the controllable silicon no electric arc contactor in parallel with main contacts, the ghyristor circuit complexity, poor reliability is particularly aspect mechanical structure, can't adjust the time difference of the break-make and the main contacts break-make of SCR control circuit, be difficult to guarantee not have the stability of arc control.
The utility model purpose be with CJ20 type series or similarly match with it controllable silicon of specification of the product of other model A.C. contactors control same mode by magnetic force, have complex structure, service behaviour problem of unstable with the solution prior art products.And adopted effective safeguard measure, the utility model can be moved by arc-free safe in practicality.
A kind of no electric arc alternating current contactor; it comprises A.C. contactor, controllable silicon, sensitive switch, current-limiting resistance, protective circuit resistance, electric capacity, overcurrent fuse; sensitive switch is equipped with on the both sides that it is characterized in that the fixed head sliding tray of A.C. contactor both sides auxiliary contact; when the slide block of auxiliary contact slides into 1～1.5 millimeter under original position; can touch sensitive switch, thereby realize no arc control operation.The described SCR control utmost point links to each other with current-limiting resistance, the current-limiting resistance other end links to each other with the closing end of above-mentioned sensitive switch, the other end of sensitive switch and controllable silicon anode tap are connected to overcurrent fuse one end, the other end of overcurrent fuse is connected to an end of contactor, and the other end of controllable silicon cathode terminal and above-mentioned contactor joins.Be parallel to controllable silicon anode tap and cathode terminal after the series connection of overvoltage protection resistance capacitance.
Because adopted the structure of interlock electric bakelite, the same control of slide block and effective safeguard measure, its advantage is conspicuous: the one, no electric arc, contact well, protection equipment; The 2nd, no electrical wear, the durable life-span is long; The 3rd, no arc heat, power and energy saving; The 4th, safeguard measure is arranged, safe and reliable.
Be described in further detail below in conjunction with example:
Fig. 1 is the circuitry phase figure in the electrical schematic diagram of the present utility model.
Fig. 2 is an end view of the present utility model.
In the accompanying drawings, (1) is arc-extinguish chamber, and (2) are the movable contact bridges of main contacts, (3) be fixed contact, (4) are the interlock electric bakelites, and (5) are iron core, (6) be slide block, (7) be static iron core, (8) are coils, and (9) are shells, (10) be sensitive switch, (11) be the auxiliary contact fixed heads, (12) are bottoms, and (13) are electronic units.
Among Fig. 1, Fig. 2, it includes arc-extinguish chamber on the main contacts the utility model (hereinafter to be referred as contactor), its lower end have interlock electric bakelite and perforation auxiliary contact slide block and near the sensitive switch of side.It is characterized in that the both sides lower edge of microswitch in auxiliary contact fixed head sliding tray, the activity template of sensitive switch is close to the slide block lower end.When described slide block slides into 1～1.5 millimeter under original position, can touch sensitive switch.Above-mentioned electronic circuit component is installed on one independently in the capsule, includes controllable silicon SCR, current-limiting resistance R
1, the overvoltage protection resistance R
2Capacitor C and overcurrent fuse F.After contactor coil (8) energising, the magnetic force by dynamic and static iron core produces makes contactor begin adhesive, and the movable contact bridge that moving iron core drives interlock electric bakelite, main contacts moves downwards, and described slide block also slides downwards simultaneously.When slide block was leaving original position to 1～1.5 and millimeter locates, the activity template of sensitive switch had been touched in its lower edge, side, and sensitive switch is connected, the conducting of control controllable silicon.When moving iron core drive interlock electric bakelite continues down to move, drive movable contact bridge and fixed contact and join the complete adhesive of contactor.In dynamic and static contact contact process, because of the controllable silicon conducting is arranged, the electric current that the flows to load controllable silicon of flowing through, and the potential difference between the CJ of contact is approximately zero, and electric arc does not take place.Otherwise when contactor coil cut off the power supply, the movable contact bridge of main contacts disconnected earlier, and the activity template of sensitive switch still is close to the slide block side and is in on-state, makes the rapid conducting of controllable silicon, and load current changes and passes through through controllable silicon.Though the movable contact bridge disconnects, controllable silicon is conducting, thereby the potential difference between the main contacts also is approximately zero, in like manner also is not enough to take place electric arc.So, guarantee that potential difference between the contact is zero contact and separate, and just can electric arc not occur yet.When moving iron core was back to original position, sensitive switch K was disconnected, and triggerless electric current, controllable silicon are when the alternating current zero passage and end, and the load dead electricity quits work.Because of flowing to the silicon controlled electric current is of short duration, so overload capacity is strong.Contactor causes that the back-emf of circuit or the fluctuation voltage in the electrical network play cushioning effect by overvoltage crowbar, unlikely puncture controllable silicon in make and break process.Overcurrent fuse prevents that load current is excessive, the unlikely cocoa silicon that burns, in case or controllable silicon puncture, load also can be not charged.When the arbitrary element of described electronic circuit component breaks down, by the arc-extinguish chamber arc extinguishing, protected contactor, contactor still can continue to use.
Claims (2)
1, a kind of no electric arc alternating current contactor; it comprises A.C. contactor, controllable silicon, sensitive switch, current-limiting resistance, protective circuit resistance, electric capacity, overcurrent fuse; sensitive switch is equipped with on the both sides that it is characterized in that A.C. contactor both sides auxiliary contact fixed head sliding tray, and the auxiliary contact slide block can touch sensitive switch when sliding into 1～1.5 millimeter under starting point.
2, no electric arc alternating current contactor according to claim 1, it is characterized in that the above-mentioned SCR control utmost point links to each other with current-limiting resistance, the other end of current-limiting resistance links to each other with above-mentioned sensitive switch closing end, the other end of sensitive switch and controllable silicon anode tap are connected to an end of overcurrent fuse, the other end of overcurrent fuse is connected to an end of above-mentioned contactor, and the other end of silicon controlled cathode terminal and above-mentioned contactor joins.Be parallel to silicon controlled anode tap and cathode terminal after the resistance of protective circuit, the capacitances in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97244356 CN2353040Y (en) | 1997-11-16 | 1997-11-16 | Arc-free AC contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97244356 CN2353040Y (en) | 1997-11-16 | 1997-11-16 | Arc-free AC contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2353040Y true CN2353040Y (en) | 1999-12-08 |
Family
ID=33953105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97244356 Expired - Fee Related CN2353040Y (en) | 1997-11-16 | 1997-11-16 | Arc-free AC contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2353040Y (en) |
-
1997
- 1997-11-16 CN CN 97244356 patent/CN2353040Y/en not_active Expired - Fee Related
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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: Zhu Jinqiu Document name: Notification of Termination of Patent Right |
|
| 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 |