CN201886842U - Large-creepage supporting insulator - Google Patents
Large-creepage supporting insulator Download PDFInfo
- Publication number
- CN201886842U CN201886842U CN2010206380020U CN201020638002U CN201886842U CN 201886842 U CN201886842 U CN 201886842U CN 2010206380020 U CN2010206380020 U CN 2010206380020U CN 201020638002 U CN201020638002 U CN 201020638002U CN 201886842 U CN201886842 U CN 201886842U
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- CN
- China
- Prior art keywords
- insulator
- insert nuts
- supporting insulator
- embedding
- creepage
- 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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Abstract
The utility model discloses a large-creepage supporting insulator, which comprises an insulator body and insert nuts. The section of the insulator body is elliptical, four insert nuts are arranged on the right end face of the insulator body, first insert nuts are arranged longitudinally correspondingly, second insert nuts are arranged bilaterally correspondingly, the first insert nuts and the second insert nuts are in cross shape, and two third insert nuts are arranged on the left end face of the insulator body. The large-creepage supporting insulator meets service requirement of systems having rated voltage of 18kV and having short-circuit breaking current over 63kA, creepage between each of the two end faces and each of the two insert nuts of the supporting insulator is larger than or equal to 340mm, so that the supporting insulator can bear rated short-time power-frequency withstand voltage of 65kV/1min and rated short-time lightning impact withstand voltage of 115kV (1.2/50 microsecond), and breakage load valve of the supporting insulator is not lower than 30kN.
Description
Technical field
The utility model belongs to large-current high-voltage AC vacuum circuit-breaker equipment, particularly a kind of large distance supporting insulator.
Background technology
When operation-current in the electric power system surpassed 63kA, alternate instantaneous electric power will reach a very large numerical value in the three-phase alternating current equipment for power transmission and distribution.Traditional circular cross-section insulator does not satisfy the requirement of this special operation condition and causes fracture, and common way is for adopting the scheme of two circular cross-section insulators parallel connection.
The utility model content
The purpose of this utility model has provided a kind of requirement that can be good at satisfying in the big electric current environment for use, and adopts the large distance design, can satisfy the large distance supporting insulator of the instructions for use of 18kV electrical voltage system.
For achieving the above object, solution of the present utility model is: a kind of large distance supporting insulator, comprise insulator body and preceding nut, the cross section of described this insulator body is oval, the right side of this insulator body is provided with four embedding nuts, and the described first embedding nut is corresponding up and down to be arranged, corresponding about the described second embedding nut, be cross between the first embedding nut and the second embedding nut, the left side of described insulator body is provided with two the 3rd embedding nuts.
Described insulator body 4 is an epoxy resin poured body.
Adopt above-mentioned large distance supporting insulator, satisfy rated voltage 18kV, operation-current and reach in 63kA and the above system instructions for use supporting insulator; Creep distance 〉=340mm between supporting insulator both ends of the surface and the two embedding mothers can bear rated short duration power-frequency withstand voltage 65kV/1min, the specified 115kV(1.2/50 of lightning impulse withstand voltage in short-term μ s); Supporting insulator fracture load value is not less than the large distance supporting insulator of 30kN.
Description of drawings
Fig. 1 is the right parallax stereogram of the utility model embodiment;
Fig. 2 is the left parallax stereogram of the utility model embodiment.
Embodiment
As shown in Figure 1 and Figure 2, the cross section of the insulator body 4 of this large distance supporting insulator is oval, the right side of this insulator body 4 is provided with four embedding nuts, the described first embedding nut is corresponding the arrangement about in the of 1, the described second embedding nut about 2 is corresponding, be cross between the first embedding nut 1 and the second embedding nut 2, the left side of described insulator body 4 is provided with two the 3rd embedding nuts 3.
The described first embedding nut 1, the second embedding nut 2, the 3rd embedding nut 3 are fixed in the epoxy resin poured body 4 by casting equipment, and the first embedding nut 1 is to surperficial creep distance 〉=340mm between the embedding nut 3; The Surface Vertical air is apart from 165mm.
Claims (3)
1. large distance supporting insulator, comprise insulator body and preceding nut, it is characterized in that: the cross section of described this insulator body (4) is for oval, the right side of this insulator body (4) is provided with four embedding nuts, the described first embedding nut (1) is corresponding up and down to be arranged, corresponding about the described second embedding nut (2), be cross between the first embedding nut (1) and the second embedding nut (2), the left side of described insulator body (4) is provided with two the 3rd embedding nuts (3).
2. large distance supporting insulator according to claim 1 is characterized in that: described insulator body (4) is an epoxy resin poured body.
3. large distance supporting insulator according to claim 1, it is characterized in that: the described first embedding nut (1), the second embedding nut (2), the 3rd embedding nut (3) are fixed in the epoxy resin poured body (4) by casting equipment, the first embedding nut (1) is to surperficial creep distance 〉=340mm between the embedding nut (3), and the Surface Vertical air is apart from 165mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206380020U CN201886842U (en) | 2010-12-02 | 2010-12-02 | Large-creepage supporting insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206380020U CN201886842U (en) | 2010-12-02 | 2010-12-02 | Large-creepage supporting insulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201886842U true CN201886842U (en) | 2011-06-29 |
Family
ID=44184390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206380020U Expired - Fee Related CN201886842U (en) | 2010-12-02 | 2010-12-02 | Large-creepage supporting insulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201886842U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103021590A (en) * | 2012-12-20 | 2013-04-03 | 揭东县白石塑料厂 | Engineering plastic insulator and manufacturing method thereof |
-
2010
- 2010-12-02 CN CN2010206380020U patent/CN201886842U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103021590A (en) * | 2012-12-20 | 2013-04-03 | 揭东县白石塑料厂 | Engineering plastic insulator and manufacturing method thereof |
| CN103021590B (en) * | 2012-12-20 | 2015-09-23 | 广东白石实业有限公司 | Engineering plastics insulator and manufacture method thereof |
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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: 20110629 Termination date: 20171202 |