CN103871774A - Outdoor high-voltage vacuum circuit breaker capable of preventing long-term live-line closing coil - Google Patents
Outdoor high-voltage vacuum circuit breaker capable of preventing long-term live-line closing coil Download PDFInfo
- Publication number
- CN103871774A CN103871774A CN201210534846.4A CN201210534846A CN103871774A CN 103871774 A CN103871774 A CN 103871774A CN 201210534846 A CN201210534846 A CN 201210534846A CN 103871774 A CN103871774 A CN 103871774A
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- China
- Prior art keywords
- closing coil
- outdoor high
- voltage vacuum
- circuit breaker
- vacuum circuit
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- 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.)
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Abstract
The invention relates to an outdoor high-voltage vacuum circuit breaker capable of preventing a long-term live-line closing coil. The outdoor high-voltage vacuum circuit breaker comprises an anti-jumping relay which is connected in series in a power circuit of the closing coil in the outdoor high-voltage vacuum circuit breaker and is used for disconnecting the power circuit when the closing coil is electrified continuously over 3 seconds. By the outdoor high-voltage vacuum circuit breaker capable of preventing the long-term live-line closing coil, the power circuit of the closing coil is disconnected through the anti-jumping relay when the closing coil is electrified continuously over 3 seconds. Therefore, the closing coil can be prevented from being burned out. Meanwhile, a direct current system is protected so as to guarantee motion reliability of a relay protection device.
Description
Technical field
The present invention relates to a kind of outdoor high-voltage vacuum breaker, specifically a kind of long-term charged outdoor high-voltage vacuum breaker of closing coil that prevents.
Background technology
When the work of existing outdoor high-voltage vacuum breaker, often there will be in making process, closing coil burns out and causes the problems such as direct voltage reduction.Cause that to burn out the factor of closing coil a lot, topmost reason be the operation circuit of circuit breaker by short-term operation design, if closing coil can generate heat when logical super-high-current and burn out closing coil for a long time, direct current system causes lower voltage through heavy-current discharge.Concrete reason is: in the process of closing operation, due to the reason of mechanism, can not be once closing operation, circuit breaker just closes at once, and auxiliary contact can not cut off closing circuit at once, when operating handle is in the closing position long period, and fuse is can not fuse time, closing coil is long-time logical super-high-current just, electric current by electromagnetic operating mechanism closing coil can be very large, reach as high as hundreds of ampere, closing coil is for a long time by so large electric current, can make coil burn out on the one hand, can make on the other hand the serious reduction of voltage of direct current system even damage rectifying installation, thereby have a strong impact on the reliability of protective relaying device action.
Summary of the invention
The technical problem to be solved in the present invention is to provide the long-term charged outdoor high-voltage vacuum breaker of a kind of prevented closing coil simple in structure, that reliability is higher.
For solving the problems of the technologies described above, the long-term charged outdoor high-voltage vacuum breaker of closing coil that prevents provided by the invention, is characterized in: in the electric power loop of the closing coil in outdoor high-voltage vacuum breaker, be in series with the anti-trip relay for continue to disconnect when energising exceedes 3 seconds described electric power loop at described closing coil.
The technique effect that the present invention has: the long-term charged outdoor high-voltage vacuum breaker of closing coil that prevents of the present invention, the anti-trip relay of employing disconnects the electric power loop of described closing coil in the time that the lasting energising of closing coil exceedes 3 seconds.Can prevent that closing coil from burning out, protect direct current system simultaneously, thereby guarantee the reliability of protective relaying device action.
Accompanying drawing explanation
For content of the present invention is more likely to be clearly understood, below the specific embodiment by reference to the accompanying drawings of basis, the present invention is further detailed explanation, wherein
Fig. 1 is the structured flowchart of the long-term charged outdoor high-voltage vacuum breaker of prevented closing coil in embodiment.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail:
As Fig. 1, in the long-term charged outdoor high-voltage vacuum breaker of the prevented closing coil of the present embodiment, in the electric power loop of closing coil, be in series with the anti-trip relay for continue to disconnect when energising exceedes 3 seconds described electric power loop at described closing coil.The electric power loop of closing coil provides DC power supply by direct current system, and is controlled by combined floodgate control switch K.
Anti-trip relay comprises electric current, two coils of voltage.Current start coil is series at trip(ping) circuit, and voltage self-sustaining coil, is parallel in closing circuit through the normally opened contact of self, and its normally-closed contact seals in closing circuit.If close a floodgate time be combined on short trouble, current coil first electric startup, its normally opened contact closure, potential winding now moves, self-sustaining.Its normally-closed contact is opened, and closing circuit can not be combined in fault again because control switch is stuck.After control switch disconnects, potential winding just discharges.Normally-closed contact resets, and plays anti creep performance.
Obviously, above-described embodiment is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also giving exhaustive to all execution modes.And these belong to apparent variation that spirit of the present invention extended out or variation still among protection scope of the present invention.
Claims (1)
1. can prevent the long-term charged outdoor high-voltage vacuum breaker of closing coil, it is characterized in that: in the electric power loop of the closing coil in outdoor high-voltage vacuum breaker, be in series with the anti-trip relay for continue to disconnect when energising exceedes 3 seconds described electric power loop at described closing coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210534846.4A CN103871774A (en) | 2012-12-12 | 2012-12-12 | Outdoor high-voltage vacuum circuit breaker capable of preventing long-term live-line closing coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210534846.4A CN103871774A (en) | 2012-12-12 | 2012-12-12 | Outdoor high-voltage vacuum circuit breaker capable of preventing long-term live-line closing coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103871774A true CN103871774A (en) | 2014-06-18 |
Family
ID=50910198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210534846.4A Withdrawn CN103871774A (en) | 2012-12-12 | 2012-12-12 | Outdoor high-voltage vacuum circuit breaker capable of preventing long-term live-line closing coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103871774A (en) |
-
2012
- 2012-12-12 CN CN201210534846.4A patent/CN103871774A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20140618 |