CN204668040U - 10kV insulated cable overvoltage protection lightning arrester - Google Patents
10kV insulated cable overvoltage protection lightning arrester Download PDFInfo
- Publication number
- CN204668040U CN204668040U CN201520311583.XU CN201520311583U CN204668040U CN 204668040 U CN204668040 U CN 204668040U CN 201520311583 U CN201520311583 U CN 201520311583U CN 204668040 U CN204668040 U CN 204668040U
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- Prior art keywords
- ring
- insulator
- lightning arrester
- armed
- long
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- 239000012212 insulator Substances 0.000 claims abstract description 25
- 230000000694 effects Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 241000883966 Astrophytum capricorne Species 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Insulators (AREA)
Abstract
The utility model relates to a kind of 10kV insulated cable overvoltage protection lightning arrester, comprise full skirt shape Oxide Arrester, one end of mounting panel is fixedly mounted with by lightning arrester mounting nuts in the bottom of lightning arrester, the other end of mounting panel is fixed on the bottom of insulator by insulator mounting nuts, on the top of lightning arrester by the long-armed termination of restrictor ring mounting nuts set current limiting ring, the circular drainage ring end of restrictor ring and insulator coaxial sleeve are in the outside of insulator, wherein, described restrictor ring comprises on the right side of restrictor ring long-armed further, installing hole is shaped with in long-armed right end, the circular drainage ring of left side opening is welded with at long-armed left end, opening two ends on the left of draining ring are shaped with the circular arc elbow curved to both sides.The utility model can reduce lightning impulse residual voltage, alleviates the pressure of current limiting element operating duty test, ensures the normal operation of circuit.
Description
Technical field
The utility model belongs to electric power cable proterctive equipment technical field, particularly a kind of 10kV insulated cable overvoltage protection lightning arrester.
Background technology
At present, after city power distribution netting twine adopts aerial insulated cable, damage to crops caused by thunder causes line-outage contingency relatively to increase, and installs overvoltage protection lightning arrester additional and can solve damage to crops caused by thunder disconnection problem.The current limiting element of line overvoltage protection device is in parallel with line insulator; when thunderbolt tower bar or lightning conducter, the high potential that lightning current causes makes the series gap action of line protector, reduces the potential difference between tower arm and wire; ensure insulator no longer flashover, thus avoid line tripping to have a power failure.After series gap action, the residual voltage of current limiting element body is not only limited to far below flashover voltage in dry insulator, and under system power-frequency voltage after lightning voltage, oneself can extinguish power frequency continued flow, ensure normal power supply.Current 10kV insulated cable overvoltage protection lightning arrester complex structure, as goat's horn gap shape, discharges uneven; Insulation column type, needs penetrating cable clamp to connect, and destroys the insulation of cable.This 10kV insulated cable overvoltage protection lightning arrester, on the basis of common lightning arrester, installs the draining ring of special construction additional, on the basis not destroying original cable and line construction, can complete the transformation to cable overvoltage protection.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, and proposes a kind of 10kV insulated cable overvoltage protection lightning arrester.
The utility model solves its technical problem and takes following technical scheme to realize:
A kind of 10kV insulated cable overvoltage protection lightning arrester; comprise full skirt shape Oxide Arrester; one end of mounting panel is fixedly mounted with by lightning arrester mounting nuts in the bottom of lightning arrester; the other end of mounting panel is fixed on the bottom of insulator by insulator mounting nuts; on the top of lightning arrester by the long-armed termination of restrictor ring mounting nuts set current limiting ring; the circular drainage ring end of restrictor ring and insulator coaxial sleeve are in the outside of insulator
Wherein, described restrictor ring comprises on the right side of restrictor ring long-armed further, is shaped with installing hole in long-armed right end, and be welded with the circular drainage ring of left side opening at long-armed left end, the opening two ends on the left of draining ring are shaped with the circular arc elbow curved to both sides.
And described circular ring is enclosed within insulator second and the 3rd between full skirt of number from top to bottom, and the distance of circular ring place plane and insulator cable is 50 ± 5mm.
Advantage of the present utility model and good effect are:
1, when circuit normally runs, the utility model overvoltage protection device does not bear the effect of lasting power frequency operating voltage, and the chargeability being in " rest " state current limiting element resistor valve sheet can obtain higher, and lightning impulse residual voltage can decrease.
2, current limiting element is only under the lightning overvoltage effect of certain amplitude after series gap action, and current limiting element body is just in running order, and therefore its external insulation level (insulating coating creepage distance) can lower than arrester without gaps.
3, on the circuit of normal design, have the ability of enough tolerance switching overvoltages, gap length can select the action avoiding switching overvoltage effect, greatly can alleviate the pressure of current limiting element operating duty test like this.
4, because of the buffer action of stainless steel draining ring series gap, even if current limiting element resistor disc is deteriorated, the normal operation affecting circuit is also unlikely to.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the vertical view of restrictor ring in the utility model;
Fig. 3 is the vertical view installing version in the utility model.
Embodiment
Implement to be further described to the utility model below in conjunction with accompanying drawing, following examples are descriptive, are not determinate, can not limit protection range of the present utility model with this.
A kind of 10kV insulated cable overvoltage protection lightning arrester; as shown in Figure 1; comprise full skirt shape Oxide Arrester 2; one end of mounting panel 3 is fixedly mounted with by lightning arrester mounting nuts 4 in the bottom of lightning arrester; the other end of mounting panel is fixed on the bottom of insulator 6 by insulator mounting nuts 5; on the top of lightning arrester by the long-armed termination of restrictor ring mounting nuts 1 set current limiting ring 7, the circular drainage ring end of restrictor ring and insulator coaxial sleeve are in the outside of insulator
Wherein, as shown in Figure 2, described restrictor ring to comprise on the right side of restrictor ring long-armed 10 further, is shaped with installing hole 11 in long-armed right end, be welded with the circular drainage ring 9 of left side opening at long-armed left end, the opening two ends on the left of draining ring are shaped with the circular arc elbow 8 curved to both sides.
In concrete enforcement of the present utility model, described circular ring is enclosed within insulator second and the 3rd between full skirt of number from top to bottom, and the distance of circular ring place plane and insulator cable is 50 ± 5mm.
In concrete enforcement of the present utility model, as shown in Figure 3, described mounting panel is the strip metal plate being shaped with left side installing hole 12 and right side installing hole 13.
Claims (2)
1. a 10kV insulated cable overvoltage protection lightning arrester; it is characterized in that: comprise full skirt shape Oxide Arrester; one end of mounting panel is fixedly mounted with by lightning arrester mounting nuts in the bottom of lightning arrester; the other end of mounting panel is fixed on the bottom of insulator by insulator mounting nuts; on the top of lightning arrester by the long-armed termination of restrictor ring mounting nuts set current limiting ring; the circular drainage ring end of restrictor ring and insulator coaxial sleeve are in the outside of insulator
Wherein, described restrictor ring comprises on the right side of restrictor ring long-armed further, is shaped with installing hole in long-armed right end, and be welded with the circular drainage ring of left side opening at long-armed left end, the opening two ends on the left of draining ring are shaped with the circular arc elbow curved to both sides.
2. 10kV insulated cable overvoltage protection lightning arrester according to claim 1; it is characterized in that: described circular ring is enclosed within insulator second and the 3rd between full skirt of number from top to bottom, and the distance of circular ring place plane and insulator cable is 50 ± 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520311583.XU CN204668040U (en) | 2015-05-14 | 2015-05-14 | 10kV insulated cable overvoltage protection lightning arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520311583.XU CN204668040U (en) | 2015-05-14 | 2015-05-14 | 10kV insulated cable overvoltage protection lightning arrester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204668040U true CN204668040U (en) | 2015-09-23 |
Family
ID=54138400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520311583.XU Active CN204668040U (en) | 2015-05-14 | 2015-05-14 | 10kV insulated cable overvoltage protection lightning arrester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204668040U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105334593A (en) * | 2015-12-11 | 2016-02-17 | 国网四川省电力公司成都供电公司 | Electric cable galvanic corrosion prevention pendant |
-
2015
- 2015-05-14 CN CN201520311583.XU patent/CN204668040U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105334593A (en) * | 2015-12-11 | 2016-02-17 | 国网四川省电力公司成都供电公司 | Electric cable galvanic corrosion prevention pendant |
| CN105334593B (en) * | 2015-12-11 | 2019-04-16 | 国网四川省电力公司成都供电公司 | A kind of electric power optical cable electric corrosion prevention pendant |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |