CN203119468U - Three-phase combined overvoltage protector - Google Patents
Three-phase combined overvoltage protector Download PDFInfo
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- CN203119468U CN203119468U CN 201320077416 CN201320077416U CN203119468U CN 203119468 U CN203119468 U CN 203119468U CN 201320077416 CN201320077416 CN 201320077416 CN 201320077416 U CN201320077416 U CN 201320077416U CN 203119468 U CN203119468 U CN 203119468U
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- zinc oxide
- electrically connected
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- oxide assembly
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Abstract
The utility model relates to a three-phase combined overvoltage protector which comprises first to sixth zinc oxide components and first to third discharge gaps. One ends of the first to third zinc oxide components are electrically connected with a three-phase bus respectively, and the other ends of the first to third zinc oxide components are electrically grounded through the fourth to sixth zinc oxide components respectively. One end of the first discharge gap is electrically connected between the first and fourth zinc oxide components, and the other end of the first discharge gap is electrically connected between the second and fifth zinc oxide components; one end of the second discharge gap is electrically connected between the second and fifth zinc oxide components, and the other end of the second discharge gap is electrically connected between the third and sixth zinc oxide components; and one end of the third discharge gap is electrically connected between the first and fourth zinc oxide components, and the other end of the third discharge gap is electrically connected between the third and sixth zinc oxide components. The three-phase combined overvoltage protector has the advantage that an inter-phase overvoltage protection function can be achieved.
Description
Technical field
The utility model relates to a kind of protector, relates in particular to a kind of three phase combined over-voltage protector.
Background technology
Because of various high voltage electric equipments; dielectric strength as transformer, switch, motor etc. has certain limit; for avoiding various overvoltage to the harm of these equipment, people are mostly at its other overvoltage protection device that connects, as the three-phase overvoltage protection device that is using at present.This three phase combined protector is four stars type structure, there is neutral point, facies unit and ground facies unit are half group of zinc oxide assembly, when system's three-phase voltage balance, the neutral point current potential is zero, ground in the four stars type does not bear any voltage mutually, and three facies units bear phase voltage, and this moment, facies unit was easy to wear out and have an accident; As system single-phase accident over the ground takes place, then the neutral point current potential is phase voltage, ground mutually and facies unit bear phase voltage respectively, four being easy to mutually wear out and having an accident of product this moment.Cause four all might have an accident mutually, and the probability that has an accident then can be very big.Four stars type structure also has an open defect, is exactly that any one facies unit is damaged, and will inevitably form the phase fault accident at short notice, and this kind accident does not allow to take place when moving in system, can cause great economic loss.
The utility model content
The technical problems to be solved in the utility model is for overcoming weak point of the prior art, and a kind of three phase combined over-voltage protector of rational in infrastructure, working stability is provided.
The utility model is to realize like this, a kind of three phase combined over-voltage protector, it comprises first to the 6th totally six zinc oxide assemblies and first to the 3rd totally three discharging gaps, first to the 3rd an end of totally three zinc oxide assemblies be electrically connected at three-phase bus respectively, the other end of the first zinc oxide assembly is via the electrical ground connection of the 4th zinc oxide assembly, the other end of the second zinc oxide assembly is via the electrical ground connection of the 5th zinc oxide assembly, the other end of the 3rd zinc oxide assembly is via the electrical ground connection of the 6th zinc oxide assembly, wherein, one end of first discharging gap is electrically connected at first, between the 4th zinc oxide assembly, the other end of first discharging gap is electrically connected at second, between the 5th zinc oxide assembly; One end of second discharging gap is electrically connected between the second, the 5th zinc oxide assembly, and the other end of second discharging gap is electrically connected between the 3rd, the 6th zinc oxide assembly; One end of the 3rd discharging gap is electrically connected between the first, the 4th zinc oxide assembly, and the other end of the 3rd discharging gap is electrically connected between the 3rd, the 6th zinc oxide assembly.
First to the 3rd totally three zinc oxide assemblies, with alternate first to the 3rd totally three discharging gaps cooperatively interact, in when, alternate overvoltage taking place surpassing gap breakdown voltage, alternate gap breakdown assembly action, thereby reach the purpose of over-voltage amplitude.
As the further improvement of such scheme, first to the 6th totally six zinc oxide assemblies and first to the 3rd totally three discharging gaps all be housed in the metab, first to the 3rd totally three zinc oxide assemblies make lead-out wire to electrically connect with three-phase bus respectively.
Be installed in the metab, can reach explosion-proof purpose, can be used for various environment.
Beneficial effect with respect to prior art is, one, and the neutral point that this kind combination does not exist four combined formulas to produce, the zinc oxide assembly is separate, under any circumstance can bear system voltage, is difficult for taking place aging accident.Its two, mutually ground gapless structure design can well on-line monitoring and the performance parameter of off-line check zinc oxide assembly.Its three, the product main body is installed in the metab, can reach explosion-proof purpose, can be used for various environment.
The utility model can be widely used in the overvoltage control of three-phase power electrical network.
Description of drawings
Fig. 1 provides the structural representation of three phase combined over-voltage protector for the utility model preferred embodiments.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
See also Fig. 1; the structural representation of the three phase combined over-voltage protector that it provides for the utility model preferred embodiments, three phase combined over-voltage protector comprises the first to the 66 zinc oxide assembly 1,2,3,4,5,6 and the first to the 33 discharging gaps 7,8,9.
The first to the 33 zinc oxide assembly 1,2, an end of 3 are electrically connected at three-phase bus A, B, C respectively, the other end of the first zinc oxide assembly 1 is via the 4th zinc oxide assembly 4 electrical ground connection, the other end of the second zinc oxide assembly 2 is via the 5th zinc oxide assembly 5 electrical ground connection, and the other end of the 3rd zinc oxide assembly 3 is via the 6th zinc oxide assembly 6 electrical ground connection.
One end of first discharging gap 7 is electrically connected between the first zinc oxide assembly 1 and the 4th zinc oxide assembly 4, and the other end of first discharging gap 7 is electrically connected between the second zinc oxide assembly 2 and the 5th zinc oxide assembly 5; One end of second discharging gap 8 is electrically connected between the second zinc oxide assembly 2 and the 5th zinc oxide assembly 5, and the other end of second discharging gap 8 is electrically connected between the 3rd zinc oxide assembly 3 and the 6th zinc oxide assembly 6; One end of the 3rd discharging gap 9 is electrically connected between the first zinc oxide assembly 1 the 4th zinc oxide assembly 4, and the other end of the 3rd discharging gap 9 is electrically connected between the 3rd zinc oxide assembly 3 and the 6th zinc oxide assembly 6.
The first to the 33 zinc oxide assembly 1,2,3 and alternate the first to the 33 discharging gap 7,8,9 cooperatively interact, when taking place alternate overvoltage above gap breakdown voltage, alternate gap breakdown assembly moves, thereby reaches the purpose of over-voltage amplitude.When overvoltage surpasses the zinc oxide operating value mutually, zinc oxide action pressure limiting energy-absorbing, thus play the overvoltage protection effect.
First to the 6th totally six zinc oxide assemblies and first to the 3rd totally three discharging gaps all can be housed in the metab, first to the 3rd totally three zinc oxide assemblies make lead-out wire to electrically connect with three-phase bus A, B, C respectively.Be installed in the metab, can reach explosion-proof purpose, can be used for various environment.
The utility model connects by discharging gap by the tie point at two valve blocks of every phase oxidation zinc component; when alternate overvoltage surpasses the puncture voltage in gap; discharging gap disruptive discharge connects oxidizability assembly stage casing; zinc oxide action pressure limiting energy-absorbing reduces alternate protection residual voltage, thereby plays alternate overvoltage protection effect.
Beneficial effect with respect to prior art is, one, and the neutral point that this kind combination does not exist four combined formulas to produce, the zinc oxide assembly is separate, under any circumstance can bear system voltage, is difficult for taking place aging accident.Its two, mutually ground gapless structure design can well on-line monitoring and the performance parameter of off-line check zinc oxide assembly.Its three, the product main body is installed in the metab, can reach explosion-proof purpose, can be used for various environment.
Obviously, the person skilled of this area can be carried out various changes and modification to three phase combined over-voltage protector of the present utility model and do not broken away from spirit and scope of the present utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.
Claims (2)
1. three phase combined over-voltage protector, it is characterized in that, it comprises first to the 6th totally six zinc oxide assemblies and first to the 3rd totally three discharging gaps, first to the 3rd an end of totally three zinc oxide assemblies be electrically connected at three-phase bus respectively, the other end of the first zinc oxide assembly is via the electrical ground connection of the 4th zinc oxide assembly, the other end of the second zinc oxide assembly is via the electrical ground connection of the 5th zinc oxide assembly, the other end of the 3rd zinc oxide assembly is via the electrical ground connection of the 6th zinc oxide assembly, wherein, one end of first discharging gap is electrically connected at first, between the 4th zinc oxide assembly, the other end of first discharging gap is electrically connected at second, between the 5th zinc oxide assembly; One end of second discharging gap is electrically connected between the second, the 5th zinc oxide assembly, and the other end of second discharging gap is electrically connected between the 3rd, the 6th zinc oxide assembly; One end of the 3rd discharging gap is electrically connected between the first, the 4th zinc oxide assembly, and the other end of the 3rd discharging gap is electrically connected between the 3rd, the 6th zinc oxide assembly.
2. three phase combined over-voltage protector as claimed in claim 1; it is characterized in that; first to the 6th totally six zinc oxide assemblies and first to the 3rd totally three discharging gaps all be housed in the metab, first to the 3rd totally three zinc oxide assemblies make lead-out wire to electrically connect with three-phase bus respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320077416 CN203119468U (en) | 2013-02-19 | 2013-02-19 | Three-phase combined overvoltage protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320077416 CN203119468U (en) | 2013-02-19 | 2013-02-19 | Three-phase combined overvoltage protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203119468U true CN203119468U (en) | 2013-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320077416 Expired - Fee Related CN203119468U (en) | 2013-02-19 | 2013-02-19 | Three-phase combined overvoltage protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203119468U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110601163A (en) * | 2019-10-29 | 2019-12-20 | 安徽中电电气有限公司 | Special overvoltage protection device |
-
2013
- 2013-02-19 CN CN 201320077416 patent/CN203119468U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110601163A (en) * | 2019-10-29 | 2019-12-20 | 安徽中电电气有限公司 | Special overvoltage protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 230031 No. 99 Yonghe Road, hi tech Zone, Anhui, Hefei Patentee after: Anhui electric technology Limited by Share Ltd Address before: 230031 No. 99 Yonghe Road, hi tech Zone, Anhui, Hefei Patentee before: Anhui Yitian Electrical Technology Co., Ltd. |
|
| 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: 20130807 Termination date: 20180219 |