CN203166507U - Automatic slight-adjustment turn type arc extinguishing coil - Google Patents
Automatic slight-adjustment turn type arc extinguishing coil Download PDFInfo
- Publication number
- CN203166507U CN203166507U CN 201320149289 CN201320149289U CN203166507U CN 203166507 U CN203166507 U CN 203166507U CN 201320149289 CN201320149289 CN 201320149289 CN 201320149289 U CN201320149289 U CN 201320149289U CN 203166507 U CN203166507 U CN 203166507U
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- China
- Prior art keywords
- coil
- automatic
- iron core
- arc suppression
- arc extinguishing
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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.)
- Expired - Fee Related
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Abstract
The utility model provides an automatic slight-adjustment turn type arc extinguishing coil, which comprises a round iron core (1), an inductance coil (2) and an automatic adjusting switch coil (3). The automatic slight-adjustment turn type arc extinguishing coil is characterized in that the inductance coil (2) is arranged on the round iron core (1); and the automatic adjusting switch coil (3) is arranged and connected on the central part of the inductance coil (2) and further located inside the round iron core (1). The automatic slight-adjustment turn type arc extinguishing coil can achieve very low adjusting shifts. Meanwhile, a grounding current can be easily limited within a self-extinguishing range when a system is faulty. The cost is thus saved.
Description
Technical field
The utility model relates to a kind of arc suppression coil, relates in particular to a kind of automatic fine tuning circle formula arc suppression coil.
Background technology
When neutral point inserted arc suppression coil, the capacitance current component of ground connection can be by the compensation of the inductive current of arc suppression coil, and the electric current of ground arc reduces until putting out certainly like this.If select inductance (L) value of arc suppression coil to make when its inductive current can the full remuneration earthing capacitance current, resonance can appear in system when normal operation, cause new problem, isolated neutral the time, the single phase ground fault ratio is very big, if ground arc can put out certainly, just can not form the tripping operation accident, otherwise need between system neutral and ground, insert arc suppression coil, its effect is to reduce single-phase-to-ground current, thereby impel ground arc from putting out, continue development or burn lead to prevent fault.Therefore generally all adopt the operational mode of arc suppression coil overcompensation.Be the arc suppression coil of turn-adjusting and at present too amount adopts in the system, this is because turn-adjusting arc suppression coil with a long history, the manufacturing process maturation.One of this arc suppression coil is terminated at the central point of three phase mains, other end ground connection.According to the electric power thus supplied of distrbution network, insert with the number of turn (inductance value) of switch with required arc suppression coil.When in a single day single-phase earthing takes place in system, fault current can be limited in below the 3A, make touch voltage and step voltage all very low, electric arc burn is very slight, thereby avoids equipment, personal injury, but and system's charging operation 2 hours.The turn-adjusting arc suppression coil is by waiting spill current to adjust gear, namely adjusting with K switch at present.Its gear is shelves surplus 10 generally, adopt the operational mode of overcompensation.Because stepping is regulated, it is thicker to certainly exist adjusting, and the gear of its selection very likely can be away from resonance point, causes the earth current after the compensation bigger, extinguishing arc automatically when breaking down, and new problem also may appear in the arc suppression coil of employing alternate manner; And what use in a large number in the system at present is the arc suppression coil of turn-adjusting, as adopting the replacing measure, must cause great waste.
Summary of the invention
Technical problem to be solved in the utility model is, above-mentioned deficiency at prior art, and provide a kind of automatic fine tuning circle formula arc suppression coil, this coil is the automatic by-pass cock coil of connection to be set in the inductance coil middle part be arranged in the circular iron core, automatically by-pass cock coil the end of a thread two ends are connected to switch, the control part of this switch connects tracer and realizes automatic fine tuning circle formula extinguishing arc, can realize the regulation stall that arc suppression coil is very low, the earth current when can realize the system failure this moment easily is limited within the scope that can put out certainly.
Above-mentioned technical problem of the present utility model is realized by following technical scheme, developed a kind of automatic fine tuning circle formula arc suppression coil, this automatic fine tuning circle formula arc suppression coil is by circular iron core 1, inductance coil 2, automatic by-pass cock coil 3, it is characterized in that: inductance coil 2 is arranged on the circular iron core 1, the automatic by-pass cock coil 3 of connection is set in inductance coil 2 middle parts is arranged in the circular iron core 1.
On described circular iron core 1 post winding inductance quantity shorting switch 5 is set.
Described automatic by-pass cock coil 3 the end of a thread two ends are connected to switch 6, and the control part of this switch 6 connects tracer 4.
Advantage of the present utility model is: can realize the regulation stall that arc suppression coil is very low, the earth current when can realize the system failure this moment easily is limited within the scope that can put out certainly, saves cost.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
As shown in Figure 1, a kind of automatic fine tuning circle formula arc suppression coil provided by the utility model comprises the steps:
This automatic fine tuning circle formula arc suppression coil is by circular iron core 1, inductance coil 2, automatic by-pass cock coil 3, it is characterized in that: inductance coil 2 is arranged on the circular iron core 1, the automatic by-pass cock coil 3 of connection is set in inductance coil 2 middle parts is arranged in the circular iron core 1.
On described circular iron core 1 post winding inductance quantity shorting switch 5 is set.
Described automatic by-pass cock coil 3 the end of a thread two ends are connected to switch 6, and the control part of this switch 6 connects tracer 4.
The announcement of the above embodiment is in order to illustrate the utility model, is not in order to limiting the utility model, so the displacement of the change of numerical value or equivalence element must be subordinate to category of the present utility model such as.
Claims (3)
1. automatic fine tuning circle formula arc suppression coil, by circular iron core (1), inductance coil (2), automatic by-pass cock coil (3), it is characterized in that: inductance coil (2) is arranged on the circular iron core (1), the automatic by-pass cock coil of connection (3) is set in inductance coil (2) middle part is arranged in the circular iron core (1).
2. automatic fine tuning circle formula arc suppression coil according to claim 1 is characterized in that, on described circular iron core (1) post winding inductance quantity shorting switch (5) is set.
3. automatic fine tuning circle formula arc suppression coil according to claim 1 is characterized in that, described automatic by-pass cock coil (3) the end of a thread two ends are connected to switch (6), and the control part of this switch (6) connects tracer (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320149289 CN203166507U (en) | 2013-03-28 | 2013-03-28 | Automatic slight-adjustment turn type arc extinguishing coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320149289 CN203166507U (en) | 2013-03-28 | 2013-03-28 | Automatic slight-adjustment turn type arc extinguishing coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203166507U true CN203166507U (en) | 2013-08-28 |
Family
ID=49027667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320149289 Expired - Fee Related CN203166507U (en) | 2013-03-28 | 2013-03-28 | Automatic slight-adjustment turn type arc extinguishing coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203166507U (en) |
-
2013
- 2013-03-28 CN CN 201320149289 patent/CN203166507U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 |