CN204794070U - Novel large capacity overvoltage protection device - Google Patents
Novel large capacity overvoltage protection device Download PDFInfo
- Publication number
- CN204794070U CN204794070U CN201520519620.6U CN201520519620U CN204794070U CN 204794070 U CN204794070 U CN 204794070U CN 201520519620 U CN201520519620 U CN 201520519620U CN 204794070 U CN204794070 U CN 204794070U
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- Prior art keywords
- counter
- piezo
- disconnector
- overvoltage protection
- resistor
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Abstract
The utility model discloses a novel large capacity overvoltage protection device, including the piezo -resistor R1 who connects looks in three -phase alternating current respectively, R2 and R3, the disconnector T1 sum counter S1 who establishes ties with piezo -resistor R1 in proper order, the disconnector T2 sum counter S2 who establishes ties, the disconnector T3 sum counter S3 who establishes ties, parallelly connected back one end and counter S1, absorption capacitors C1 and equalizing resistance R4 that S2 and S3 all connect, the disconnector T4 sum counter S4 of the absorption capacitors C1 other end after connecting in parallel is connected to the back one end of establishing ties, and series connection back one end ground connection and other end counter S1, discharge gap X and piezo -resistor R5 that S2 and S3 all connect. The utility model discloses an interact of piezo -resistor and isolator not only keeps alternate overvoltage protection function, has simplified the structure in addition, has reduced components and parts quantity, the cost is reduced to mating reaction through discharge gap and piezo -resistor provides the lightning -arrest effect of installing, uses more safe and reliable, reduces the accident rate.
Description
Technical field
The utility model relates to electrical equipment technical field, specifically, relates to a kind of novel high-capacity overvoltage protection device.
Background technology
Overvoltage protection device is restriction lightning overvoltage and a kind of protective device of switching overvoltage, mainly for the protection of the insulation of the electric equipments such as generator, transformer, vacuum switch, bus, motor from superpotential infringement.
The now defect of overvoltage protection device in the market: 1, complex structure, volume is large and cost is high.The alternate protective device of overvoltage protection device all forms identical, the protection pole connect as star pole by three structures and forms in the market; protective device is made up of a protection pole mutually; this each protection pole is all be made up of the multiple components and parts unit be in series; the required components and parts of this protection electrode structure composition are many, and complex structure, volume are large and cost is high.2, potential rate of failure is high.The extremely required components and parts of protection due to overvoltage protection device are many, and the damage of each components and parts may cause all again overvoltage protection device normally to work, and therefore its potential rate of failure is high.
Utility model content
For overcoming the problems referred to above of the prior art, the utility model provide a kind of novel ingenious, structure is simple, the with low cost and novel high-capacity overvoltage protection device that rate of failure is low.
To achieve these goals, the technical solution adopted in the utility model is as follows:
Novel high-capacity overvoltage protection device, comprise the piezo-resistance R1 being connected to a phase in three-phase alternating current, R2 and R3, the disconnector T1 sum counter S1 connected with piezo-resistance R1 successively, the disconnector T2 sum counter S2 connected with piezo-resistance R2 successively, the disconnector T3 sum counter S3 connected with piezo-resistance R3 successively, rear one end parallel with one another and counter S1, the Absorption Capacitance C1 that S2 with S3 is all connected and grading resistor R4, after mutual series connection, one end is connected to the Absorption Capacitance C1 after parallel connection and the other end of grading resistor R4 and the disconnector T4 sum counter S4 of other end ground connection, and mutually one end ground connection and other end counter S1 after series connection, the discharging gap X that S2 with S3 is all connected and piezo-resistance R5.
As preferably, described disconnector T1, T2, T3 are timing releaser or hot melten type disconnector.
As preferably, described counter S1, S2, S3 are phase-splitting counter or Current Mutual Inductance counter.
As preferably, described grading resistor R4 is metalfilmresistor or enamelled resistor.
As preferably, described discharging gap X is the one in dull and stereotyped gap, vacuum discharge gap, spherical gap, porcelain czermak space.
Compared with prior art, the utility model has following beneficial effect:
The utility model is by the interaction of piezo-resistance and isolator; not only retain alternate over-voltage protection function; and simplify the structure; decrease component number; reduce cost; and add Protection capacity, and provide the lightning-arrest effect of device by the mating reaction of discharging gap and piezo-resistance, use safety and reliability; reduce rate of failure; and the utility model design is ingenious, compact is easy to use; be easy to manufacture; with low cost, be with a wide range of applications, be applicable to applying.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail, and execution mode of the present utility model includes but not limited to the following example.
Embodiment
As shown in Figure 1, this novel high-capacity overvoltage protection device, a branch road primarily of three branch roads and ground connection that are connected to each phase in three-phase alternating current connects and composes.Each phase branch road is followed in series to form by piezo-resistance, disconnector sum counter, if first-phase branch road is piezo-resistance R1, disconnector T1 sum counter S1, second-phase branch road is piezo-resistance R2, disconnector T2 sum counter S2, and third phase branch road is piezo-resistance R3, disconnector T3 sum counter S3.The disconnector T4 sum counter S4 that connects successively again after the route Absorption Capacitance C1 and grading resistor R4 of ground connection is parallel with one another is formed.In order to provide better protective value, the branch road of ground connection is also parallel with lightning-arrest unit, and this lightning-arrest unit is made up of the discharging gap X connected successively and piezo-resistance R5.Wherein, Absorption Capacitance C1 can be an electric capacity, also can be formed by multiple capacitances in series.
As preferably, described disconnector T1, T2, T3 are timing releaser or hot melten type disconnector, described counter S1, S2, S3 are phase-splitting counter or Current Mutual Inductance counter, described grading resistor R4 is metalfilmresistor or enamelled resistor, and described discharging gap X is the one in dull and stereotyped gap, vacuum discharge gap, spherical gap, porcelain czermak space.
By above-mentioned setting, the basis ensureing over-voltage protection function effectively reduces the component number of use, structure is more succinct, and cost is lower, and volume is less, and rate of failure is lower.
Above-described embodiment is only preferred embodiment of the present utility model; restriction not to the utility model protection range; in every case design principle of the present utility model being adopted, and the change carried out non-creativeness work on this basis and make, all should belong within protection range of the present utility model.
Claims (5)
1. novel high-capacity overvoltage protection device, it is characterized in that, comprise the piezo-resistance R1 being connected to a phase in three-phase alternating current, R2 and R3, the disconnector T1 sum counter S1 connected with piezo-resistance R1 successively, the disconnector T2 sum counter S2 connected with piezo-resistance R2 successively, the disconnector T3 sum counter S3 connected with piezo-resistance R3 successively, rear one end parallel with one another and counter S1, the Absorption Capacitance C1 that S2 with S3 is all connected and grading resistor R4, after mutual series connection, one end is connected to the Absorption Capacitance C1 after parallel connection and the other end of grading resistor R4 and the disconnector T4 sum counter S4 of other end ground connection, and mutually one end ground connection and other end counter S1 after series connection, the discharging gap X that S2 with S3 is all connected and piezo-resistance R5.
2. novel high-capacity overvoltage protection device according to claim 1, is characterized in that, described disconnector T1, T2, T3 are timing releaser or hot melten type disconnector.
3. novel high-capacity overvoltage protection device according to claim 1, is characterized in that, described counter S1, S2, S3 are phase-splitting counter or Current Mutual Inductance counter.
4. novel high-capacity overvoltage protection device according to claim 1, is characterized in that, described grading resistor R4 is metalfilmresistor or enamelled resistor.
5. novel high-capacity overvoltage protection device according to claim 1, is characterized in that, described discharging gap X is the one in dull and stereotyped gap, vacuum discharge gap, spherical gap, porcelain czermak space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520519620.6U CN204794070U (en) | 2015-07-17 | 2015-07-17 | Novel large capacity overvoltage protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520519620.6U CN204794070U (en) | 2015-07-17 | 2015-07-17 | Novel large capacity overvoltage protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204794070U true CN204794070U (en) | 2015-11-18 |
Family
ID=54534053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520519620.6U Expired - Fee Related CN204794070U (en) | 2015-07-17 | 2015-07-17 | Novel large capacity overvoltage protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204794070U (en) |
-
2015
- 2015-07-17 CN CN201520519620.6U patent/CN204794070U/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 |
Granted publication date: 20151118 Termination date: 20180717 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |