CN2316719Y - Low-voltage vacuum circuit breaker - Google Patents
Low-voltage vacuum circuit breaker Download PDFInfo
- Publication number
- CN2316719Y CN2316719Y CN 97242146 CN97242146U CN2316719Y CN 2316719 Y CN2316719 Y CN 2316719Y CN 97242146 CN97242146 CN 97242146 CN 97242146 U CN97242146 U CN 97242146U CN 2316719 Y CN2316719 Y CN 2316719Y
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- CN
- China
- Prior art keywords
- fixed
- contact
- circuit breaker
- transmission mechanism
- low
- 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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- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The utility model belongs to a low-voltage vacuum circuit breaker in a low-voltage distribution system, comprising a framework, contacts, an operating mechanism, a trip, a motor, a transmission mechanism, etc. The utility model is characterized in that one end of a moving contact and one end of a fixed contact are sealed in a vacuum arc-extinguishing chamber; the vacuum arc-extinguishing chamber and the other end of the fixed contact are fixed on an electric conduction bracket; the other end of the moving contact is fixedly connected with a small crank arm of the transmission mechanism; the transmission mechanism and the operating mechanism are connected; the overcurrent trip is fixed on the electric conduction bracket.
Description
The utility model belongs to the low-voltage circuit breaker in 630A～3200A/380V～690V distribution system, and the spy is about low-voltage vacuum circuit breaker in addition.
Because the contact of existing lv air breaker is exposed in the air, when the contact of deciliter circuit breaker, produce arcing, cause accident easily, dangerous, and contact when cut-offfing the arc time long, the high contact of easily burning of flashover distance.
The purpose of this utility model provides a kind of safe and reliable, cutout is big, maintenance capacity is little low-voltage vacuum circuit breaker.
Design philosophy of the present utility model is: the transmission speed that improves moving contact of breaker, the switch off time of contact is controlled between 4 to 8 microseconds, and the end that dynamic/static contact can be contacted is sealed in the vacuum interrupter simultaneously: and all parts of circuit breaker such as operating mechanism, transmission mechanism, vacuum interrupter are fixed as one on iron frame.
Low-voltage vacuum circuit breaker according to this thought design comprises framework, contact, operating mechanism, release, motor, transmission mechanism etc., and it is characterized in that: an end of moving contact and an end of fixed contact are sealed in the vacuum interrupter; The other end of vacuum interrupter and fixed contact is fixed on the conducting bracket; The other end of moving contact is fixedlyed connected with the little connecting lever of transmission mechanism, and transmission mechanism is connected with operating mechanism; Overcurrent release is fixed on the conducting bracket.
Characteristics of the present utility model are as follows:
1. improve the moving contact transmission speed, make the contact break-time shorten to original half the time.Reduce the striking time between moving contact and the fixed contact like this, make contact be difficult for burn, can cut-off more than 20 times.Former circuit breaker only cut-offs 3 times will change contact.
2. contact is not exposed in the air, and is indoor in vacuum extinction, can not produce arcing, increases to cut-off capacity and open and close times.
3. with iron frame all parts are fixed together, compact conformation, volume is little.
Below in conjunction with the embodiment accompanying drawing the utility model is described further.
Accompanying drawing 1 is the example structure schematic diagram.
Among the figure: 1. iron frame, 2. closing electromagnets, 3. touch spring, 4. support, 5. vacuum interrupter, 6. disjunction spring, 7. device for under-voltage releasing equipment, 8. shunt release, 9. closing spring, 10. operating mechanism, 11. overcurrent releases, 12. little connecting lever 1,13. spring pull bars, 14. big connecting levers, 15. moving contacts, 16. conducting brackets, 17. fixed contacts, 18. insulation boards, 19. spring arm-ties, 20. motors, 21. cams.
Be fixed with operating mechanism 10, support 4, transmission mechanism, spring arm-tie 19, device for under-voltage releasing equipment 7, shunt release 8, motor 20 at the back side of iron frame 1; Fixing spring pull bar 13, spring pull bar 13 are connected with spring 6 on the support 4; The front of iron frame 1 is fixed with insulation board 18, conducting bracket 16, overcurrent release 11; Be fixed with vacuum interrupter 5 on the conducting bracket 16, fixed contact 17.
When under voltage or overcurrent; device for under-voltage releasing equipment 7 or 20 runnings of overcurrent release 11 conducting drive motors make moving contact 15 quick and fixed contact 17 disjunctions by operating mechanism 10 drive power transmission shafts, disjunction spring 6, spring pull bar 13, little connecting lever 12, play and cut-off protective effect.When needing to close a floodgate, conducting closing electromagnets 2, electromagnet 2 produces magnetic force, the adhesive effect of magnetic force makes cam 21 rotation travelling gears, closing spring 9, big connecting lever 14, touch spring 13, spring pull bar 13, little connecting lever 12 make moving contact 15 not have arc chamber 5 in vacuum and connects with fixed contact 17, finishes closing function.
Claims (3)
1. a low-voltage vacuum circuit breaker comprises framework, contact, operating mechanism, release, motor, transmission mechanism etc., and it is characterized in that: an end of moving contact and an end of static contact are sealed in the vacuum interrupter; The other end of vacuum interrupter and fixed contact is fixed on the conducting bracket; The other end of moving contact is fixedlyed connected with the little connecting lever of transmission mechanism, and transmission mechanism is connected with operating mechanism; Overcurrent release is fixed on the conducting bracket.
2. low-voltage vacuum circuit breaker according to claim 1, its feature also is: be fixed with operating mechanism, support, transmission mechanism, fixed axis, device for under-voltage releasing equipment, shunt release, motor, electromagnet, cam at the back side of iron frame; Fixing spring pull bar, spring pull bar are connected with spring on the support; The front of iron frame is fixed with insulation board, conducting bracket, overcurrent release.
3. low-voltage vacuum circuit breaker according to claim 2, its feature also is: in the speed of cut-offfing of moving contact in the vacuum interrupter and fixed contact between 4 to 8 microseconds; All parts of circuit breaker such as operating mechanism, transmission mechanism, vacuum interrupter are connected to one on iron frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97242146 CN2316719Y (en) | 1997-11-28 | 1997-11-28 | Low-voltage vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97242146 CN2316719Y (en) | 1997-11-28 | 1997-11-28 | Low-voltage vacuum circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2316719Y true CN2316719Y (en) | 1999-04-28 |
Family
ID=33951463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97242146 Expired - Fee Related CN2316719Y (en) | 1997-11-28 | 1997-11-28 | Low-voltage vacuum circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2316719Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020109640A1 (en) * | 2018-11-29 | 2020-06-04 | Ormazabal Corporate Technology, A.I.E. | Switching and protection means for low-voltage switchboard and low-voltage switchboard incorporating said switching and protection means |
-
1997
- 1997-11-28 CN CN 97242146 patent/CN2316719Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020109640A1 (en) * | 2018-11-29 | 2020-06-04 | Ormazabal Corporate Technology, A.I.E. | Switching and protection means for low-voltage switchboard and low-voltage switchboard incorporating said switching and protection means |
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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 |