CN102707096B - Universal insulation cap for voltage withstand test of 66kV cables - Google Patents
Universal insulation cap for voltage withstand test of 66kV cables Download PDFInfo
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- CN102707096B CN102707096B CN201210159809.XA CN201210159809A CN102707096B CN 102707096 B CN102707096 B CN 102707096B CN 201210159809 A CN201210159809 A CN 201210159809A CN 102707096 B CN102707096 B CN 102707096B
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- insulation
- rotating shaft
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- 238000009413 insulation Methods 0.000 title claims abstract description 73
- 238000012360 testing method Methods 0.000 title claims abstract description 58
- 238000009422 external insulation Methods 0.000 claims abstract description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 24
- 239000012212 insulator Substances 0.000 claims description 22
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 229910001369 Brass Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 239000010951 brass Substances 0.000 claims description 3
- 230000003467 diminishing effect Effects 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000004020 conductor Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000001131 transforming effect Effects 0.000 abstract 1
- 210000002683 foot Anatomy 0.000 description 17
- 238000013461 design Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 5
- 238000004382 potting Methods 0.000 description 4
- 230000009466 transformation Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000003862 health status Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000002674 ointment Substances 0.000 description 1
- 238000012346 open field test Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Abstract
The invention relates to the technical field of insulation cables of power systems, in particular to a universal insulation cap for voltage withstand test of 66kV cables. The insulation cap comprises an insulation cap and further comprises a jointing clamp. The universal insulation cap is connected on an insulation bracket; an external insulation layer which comprises an insulation umbrella skirt, a shielding layer, a stress layer and an inner wall of the insulation cap are installed on the universal insulation cap from outside to inside in turn; and the head end of the universal insulation cap is a circular plane, and the centre of the head end is provided with a conductor through-hole for the voltage withstand test. The universal insulation cap for the voltage withstand test of the 66kV cables has the following advantages: the test cost input of the power cables is greatly reduced, and the outage time caused by maintaining and transforming the power cables is shortened, so that the power supply of the dead lines can be quickly recovered and the reliability of the power for production and livelihood can be ensured; and the universal insulation cap also has the characteristic of being small in volume, light in weight, high in compatibility, good in insulation effect, steady in reliability, flexible in assembling and convenient in carrying; and with the adoption of the universal insulation cap, the requirements of the high-voltage electrical test on flexibility and mobility can be met, so that the universal insulation cap can be applied to the hand-over test of the power cables of which the voltage level is 66kV in the power system.
Description
Technical field
The present invention relates to the technical field of power system insulation cable, particularly relating to a kind of 66kV cable voltage test universal insulation cap, is a kind of power cable high-potting universal insulation cap.
Background technology
Power cable is as the important component part in electric system, and Main Function is in order to transmission and the cable product distributing high-power power in the basic routing line of electric system.Be usually used in Urban Underground electrical network, the lead line of power house, the in-line power of industrial and mining enterprises and cross river, excessively extra large submarine transmission line.In power circuit, the proportion shared by cable increases just gradually.In order to ensure the operation that power cable is reliable and stable, dispatch from the factory at power cable, install after and all need to dispatch from the factory in running, commissioning test, provide test figure, to check the health status of power cable, thus ensure the safe and reliable operation of electric system.
The existing 66kV of company of Shenyang Power Supply Co. and above large-scale transformation 200 multiple stage, and along with the ever-increasing need for electricity of arrival and city of the National Games, have again a large amount of in the transformer station built and will build, Shenyang Power Supply Co.'s test has a large amount of power cable commissioning test tasks every year thus.And often organizing power cable in commissioning test, at cable testing live end installing insulating cap to increase cable terminal insulation intensity, inconvenience factor need be there is at present in the work of installing insulating cap for meeting ac voltage withstanding condition in power cable.First, because different cable manufacturers is furnished with the withstand voltage test insulator cap without model specially, will there is the incompatible problem of insulator cap in the cable running into different manufacturers production, the appearance of this problem makes work efficiency greatly reduce.Secondly, same producer is equipped with an insulator cap often only to a newly-built electric substation, instead of one group (three), in order to realize frequently must changing cable insulation cap by mutually withstand voltage, this not only also consumes a large amount of activity durations, and frequent replacing also increases the probability of damage of cable termination.Again, when being only furnished with an insulator cap for testing crew investigation fault phase cable adds a large amount of tasks, cause testing crew can not find out failure cause in time, impact ensures that electric power system recovers normal operation smoothly.
Summary of the invention
The present invention is directed to above-mentioned problems of the prior art, providing a kind of 66kV cable voltage test universal insulation cap, is the universal insulator cap of a kind of large-scale power cable testing.Object is that security performance is high, and volume is little in order to provide a kind of highly versatile, and quality is light, the insulator cap that large-scale power cable commissioning test easy to carry is general.
The technical solution adopted for the present invention to solve the technical problems is:
66kV cable voltage test universal insulation cap, comprises insulator cap; Also comprise binding clip; Universal insulation cap is connected on insulating support, and universal insulation cap is provided with by interior successively from outer: external insulation layer is containing insulation full skirt 2, screen layer and stressor layers 3 and insulator cap inwall 4; Universal insulation cap head end is round plane, and head end center is withstand voltage test wire passing hole 1.
The lateral wall of described universal insulation cap is equidistant successively is from top to bottom evenly distributed with eight class B insulation full skirts; Insulator cap inwall for being concentric circles tapered cylinder with outer wall, the internal diameter diminishing pyramidal structure from the bottom to top of insulator cap inwall.
The both sides of described binding clip are respectively equipped with left side semicircle shape wiring clamping plate and right side semicircle shape wiring clamping plate; Two pieces of semicircle wiring clamping plate lower ends are connected by connection rotating shaft; Binding clip right side semicircle shape wiring clamping plate upper end is concave shape opening clamp, and concave shape opening clamp is corresponding with connecting screw rod in the left side rotating shaft of left side semicircle shape wiring clamping plate upper end.
Described left side, left side semicircle shape wiring clamping plate upper end connecting screw rod root rotating shaft is fixedly connected with connecting screw rod in the rotating shaft of left side, and in the rotating shaft of left side, connecting screw rod is provided with connecting screw rod head end nut.
Left side arc wiring card, right side arc wiring card is equipped with outside described left side semicircle shape wiring clamping plate, right side semicircle shape wiring clamping plate.
Described insulating support upper end is provided with semicircular arc supporting base, and the support bar head end that semicircular arc supporting base lower end is connected to post upper is fixed on aluminum metal ring; In the middle part of support bar, aluminum metal ring is located on support bar; Insulating support lower end is provided with feet, and feet one end to be connected in the middle part of support bar on aluminum metal ring; Support bar bottom is provided with the fixing aluminum metal ring in bottom, and aluminum metal ring connects surrounding connecting rod by rotating shaft screw bolt is fixed in bottom, and the other end of connecting rod is connected with feet respectively.
Described feet is provided with four.
Described support bar is epoxy resin material; Described feet and connecting rod are aluminum alloy material.
On described left side semicircle shape wiring clamping plate, right side semicircle shape wiring clamping plate, left side arc wiring card, right side arc wiring card, semicircle clamping plate lower end connection rotating shaft, left side rotating shaft, connecting screw rod, connecting screw rod head end nut, concave shape opening clamp and left side connecting screw rod root rotating shaft are brass and are processed into.
Described universal insulation cap is that silicon rubber casting forms.
The invention has the beneficial effects as follows:
Tested power cable head end stress cone and universal insulation cap inwall are combined closely by the present invention, insulator cap outer wall is provided with insulation full skirt, meet the requirement of the high pressure withstand voltage test class of insulation, test lead is connected with tested cable conductor by binding clip, is provided with the tested erecting cable of insulator cap on insulating support.Described inwall adopts the design of concentric circles tapered cylinder, can fit with the 66kV power cable stress cone outer wall of different model, realizes meeting the withstand voltage test class of insulation and requires object.Application of the present invention achieves the requirement that set of device can meet the 66kV power cable handing-over withstand voltage test of different model, greatly reduces power cable test cost and drops into, serve positive impetus for raising enterprise income.
Because tested cable realizes insulation effect when normally running by SF6 gas in GIS air chamber, therefore cable end body dielectric strength is not enough to meet electric pressure requirement added by withstand voltage test, by application of the present invention, the dielectric strength of tested cable live end when withstand voltage test can be strengthened, avoid the possibility producing electric discharge phenomena failure test effect because cable end dielectric strength is low.
Simultaneously, due to exploitation and the use of apparatus of the present invention, make to reduce to present 3 hours 35 minutes in the 66kV electric pressure power cable commissioning test time by original 4 hours 30 minutes, change test casing number of times and be down to 0 time by more than original 3 times, operating personnel is then reduced to 4 people by 7 people, and average each activity duration shortened close to 1 hour.So also just substantially reduce because of electric equipment maintenance, transformation and the power off time that causes, dead line is restored electricity as soon as possible, ensure that enterprise produces and the reliability of people's lives electricity consumption.
Binding clip part can avoid complex operations when in the past changing lead-in wire wiring, and this binding clip is simple to operate, is connected firmly, convenient disassembly, fully demonstrates little, fast, clever advantage.Improve the safe reliability of field high-pressure test work efficiency and site work.
The design of universal insulation cap 30 part of the present invention, taken into full account maximum voltage and current peak needed for power cable handing-over withstand voltage test, the class of insulation of universal insulation cap can meet the requirement of voltage and current peak completely.Simultaneously universal insulation cap device entirety physical strength, tensile resistance also can fully meet open field test requirement, is can keep good physical strength and insulation effect between-30 DEG C-40 DEG C in temperature.
Insulating support design meets testing ground circumstance complication requirement.Power cable is layed in subterranean tunnel more, when cable head is not connected with GIS air chamber or transformer grease chamber again, only has very low dielectric strength, usually needs to be arised from by cable head bracing frame in the air to meet insulating requirements during high-potting.And scene lacks insulating support usually, there are not professional support in high-potting specialty and producer yet.This blank has been filled up in the design of this insulating support, turn improves site test operational stability and safe reliability while meeting dielectric strength.
The present invention also considers the variation of different model power cable interface diameter, power cable stress cone outer wall is utilized to be conical structure, universal insulation cap 30 and tested power cable connecting portion insulator cap inner chamber 4 are counted concentric circles taper tubular structure, so no matter tested cable size size, well can fit with universal insulation cap inner chamber, reach the insulation effect of expection.
The present invention greatly can reduce power cable test cost and drop into, and serves positive impetus for raising enterprise income.Simultaneously application of the present invention can be shortened because of power cable maintenance, transformation and the power off time that causes, and dead line is restored electricity as soon as possible, ensures that enterprise produces and the reliability of household electricity.Also have volume little, quality is light, compatible high, insulation effect is good, reliable and stable, and assembling flexibly, feature easy to carry, meets the requirement of the flexible characteristic of high voltage electrical test, can be applied in electric system 66kV electric pressure power cable commissioning test work.
Accompanying drawing explanation
Fig. 1 is universal insulator cap side view;
Fig. 2 is the front elevation of Fig. 1;
Fig. 3 is binding clip structure side view in the present invention;
Fig. 4 is the front elevation of Fig. 3;
Fig. 5 is insulating support structure front elevation in the present invention;
Fig. 6 is the side view of Fig. 5;
Integral assembling structure schematic diagram when Fig. 7 is withstand voltage test.
In figure: withstand voltage test wire passing hole 1, insulation full skirt 2, screen layer and stressor layers 3, insulator cap inwall 4, semicircle clamping plate lower end connection rotating shaft 5, left side semicircle shape wiring clamping plate 6, left side arc wiring card 7, right side arc wiring card 8, right side semicircle shape wiring clamping plate 9, connecting screw rod 10 in the rotating shaft of left side, connecting screw rod head end nut 11, concave shape opening clamp 12, left side connecting screw rod root rotating shaft 13, semicircular arc supporting base 14, supporting base standing screw 15, support bar head end fixes aluminum metal ring 16, support bar 17, aluminum metal ring 18 in the middle part of support bar, feet 19, connecting rod 20, aluminum metal ring 21 is fixed bottom support bar, feet upper end fixed rotating shaft bolt 22, aluminum metal ring stationary links rotating shaft screw bolt 23 is fixed bottom support bar, feet bottom fixed rotating shaft bolt 24, electric-cable core 25, power cable inner insulating layer 26, power cable stress cone 27, power cable external insulation layer 28, high pressure withstand voltage test wire 29, universal insulation cap 30, binding clip 31, insulating support 32.
Below in conjunction with specific embodiments of the invention and accompanying drawing, the present invention is described in detail.
Embodiment
As shown in Figure 7, the present invention is 66kV cable voltage test universal insulation cap, and it comprises binding clip 31, universal insulation cap 30, insulating support 32 three parts.Universal insulation cap 30 is connected on insulating support 32, and universal insulation cap 30 is provided with by interior each Rotating fields successively from outer: external insulation layer is containing insulation full skirt 2, screen layer and stressor layers 3 and insulator cap inwall 4; Universal insulation cap 30 head end is round plane, and head end center is withstand voltage test wire passing hole 1.
As shown in Figure 1, Figure 2 and shown in Fig. 7, universal insulation cap 30 overall construction design is taper, is cast by silicon rubber.Head end is round plane, and head end center is withstand voltage test wire passing hole 1.The lateral wall of universal insulation cap 30 is equidistant successively is from top to bottom uniformly distributed eight class B insulation full skirts 2.The internal diameter of insulator cap inwall 4 is lower supreme diminishing pyramidal structures.
Conventional power cable structure is from inside to outside: electric-cable core 25, power cable inner insulating layer 26, screen layer, power cable external insulation layer 28.Wherein screen layer is between inner insulating layer and external insulation layer.When the present invention uses, as shown in Figure 7, be by the wiring diagram of the present invention when high-potting.Tested power cable is inserted universal insulation cap 30 inner chamber, and tested power cable stress cone 27 outer wall section need smear liquid silicone oil ointment, is fully contacted by power cable stress cone 27 outer wall, combine closely during test with universal insulation cap inwall 4.By fully stretching for the high pressure withstand voltage test wire 29 of stube cable head end electric-cable core 25 and binding clip 31.
Conventional power cable stress cone 27 is for after power cable transports erecting stage to, carry out processing and fabricating by the installation company specializing in making power cable connector to power cable end to form, its effect makes Electrical and connected equipment, as power transformer, GIS combination electric appliance, connect more fully reliably.The present invention utilizes power cable stress cone 27 and connected equipment as power transformer, GIS combination electric appliance according to power cable, the principle of reliable connection, by insulator cap inwall and power cable stress cone 27 fully reliable connection, to reach insulation, fixing, reliable object.
When the present invention uses operation, as shown in Fig. 3, Fig. 4 and Fig. 7, binding clip 31 is connected with the head end electric-cable core 25 of tested power cable, electric-cable core 25 is clamped by binding clip left side semicircle shape wiring clamping plate 6, right side semicircle shape wiring clamping plate 9, semicircle clamping plate lower end connection rotating shaft 5 connects, and can do folding and rotate.
The both sides of described described binding clip 31 are respectively equipped with left side semicircle shape wiring clamping plate 6 and right side semicircle shape wiring clamping plate 9; Two pieces of semicircle wiring clamping plate lower ends are connected by connection rotating shaft 5; Left side, binding clip left side semicircle shape wiring clamping plate 6 upper end connecting screw rod root rotating shaft 13 is fixedly connected with screw rod 10 root, in the rotating shaft of left side, connecting screw rod 10 head end is furnished with rotatable mobile link screw rod head end nut 11, connecting screw rod 10 in the rotating shaft of left side, can swing according to left side connecting screw rod root rotating shaft 13.Binding clip right side semicircle shape wiring clamping plate 9 upper end is concave shape opening clamp 12, corresponding with connecting screw rod 10 in the fixing left side rotating shaft of left side semicircle shape wiring clamping plate 6 upper end rotating shaft, right side semicircle shape wiring clamping plate 9 upper end concave shape opening clamp 12 bayonet socket is put into when left side, left side semicircle shape wiring clamping plate 6 upper end connecting screw rod root rotating shaft 13 being fixedly connected with connecting screw rod 10 in the rotating shaft of left side, can turn connecting screw rod head end nut 11, left side semicircle shape wiring clamping plate 6, right side semicircle shape wiring clamping plate 9 are opened apart from reducing, final fixing electric-cable core 25.
Be equipped with left side arc wiring card 7, right side arc wiring card 8 outside left side semicircle shape wiring clamping plate 6, right side semicircle shape wiring clamping plate 9, high pressure withstand voltage test wire 29 can be fixed on arc wiring card 7 on the left of clamping plate, right side arc wiring card 8.High pressure withstand voltage test wire 29 other end can be connected with test high pressure generator through the withstand voltage test wire passing hole 1 of insulator cap 30 head end.
Binding clip left side semicircle shape wiring clamping plate 6, right side semicircle shape wiring clamping plate 9, left side arc wiring card 7, right side arc wiring card 8, semicircle clamping plate lower end connection rotating shaft 5, left side connecting screw rod root rotating shaft 13, connecting screw rod 10 in the rotating shaft of left side, connecting screw rod head end nut 11, concave shape opening clamp 12, is brass and is processed into.
Insulating support part: as shown in Fig. 5, Fig. 6 and Fig. 7, in universal insulation cap device, its upper end of insulating support is semicircular arc supporting base 14, during test, is put on the semicircular arc supporting base 14 of insulating support 32 by the tested cable installing universal insulation cap 30.Semicircular arc supporting base 14 is epoxy resin material.The support bar head end that supporting base standing screw 15 is fixed on support bar 17 upper end is fixed on aluminum metal ring 16.Support bar 17 is epoxy resin material.Be aluminum metal ring 18 in the middle part of support bar in the middle part of support bar 17 body, in the middle part of support bar, aluminum metal ring 18 is located on support bar 17 body.Insulating support 32 lower end is four scalable expansion feets 19.Four feet 19 upper ends to be fixed in the middle part of support bar 17 body on aluminum metal ring 18 respectively by feet upper end fixed rotating shaft bolt 22, in the middle part of support bar, aluminum metal ring 18 slides up and down along support bar 17 body, drives feet about 19 telescopic moving.Support bar 17 body bottom portion is provided with fixing aluminum becket 21.Fix aluminum metal ring 21 surrounding bottom support bar to be provided with bottom support bar and to fix aluminum metal ring stationary links rotating shaft screw bolt 23, drive four connecting rods 20 to be connected with feet 19 bottom respectively by four feet bottom fixed rotating shaft bolts 24, driven bottom fixed rotating shaft bolt 22, support bar by aluminum metal ring 18 in the middle part of support bar and fix aluminum metal ring stationary links rotating shaft screw bolt 23, feet bottom fixed rotating shaft bolt 24 realizes feet and outwards stretch.Feet 19 and be attached thereto connective pole 20 and be aluminum alloy material on described insulating support.
Claims (4)
1.66kV cable voltage test universal insulation cap, comprises universal insulation cap; It is characterized in that: also comprise binding clip (31); Universal insulation cap (30) is connected on insulating support (32), and universal insulation cap (30) is provided with by interior successively from outer: external insulation layer is containing insulation full skirt (2), screen layer and stressor layers (3) and insulator cap inwall (4); Universal insulation cap (30) head end is round plane, and head end center is withstand voltage test wire passing hole (1); The outer wall of described universal insulation cap (30) is equidistant successively is from top to bottom evenly distributed with eight class B insulation full skirts (2); Insulator cap inwall (4) for being concentric circles tapered cylinder with outer wall, the internal diameter diminishing pyramidal structure from the bottom to top of insulator cap inwall (4); The both sides of described binding clip (31) are respectively equipped with left side semicircle shape wiring clamping plate (6) and right side semicircle shape wiring clamping plate (9); Two pieces of semicircle wiring clamping plate lower ends are connected by connection rotating shaft (5); Binding clip right side semicircle shape wiring clamping plate (9) upper end is concave shape opening clamp (12), and concave shape opening clamp (12) is corresponding with connecting screw rod (10) in left side semicircle shape wiring clamping plate (6) left side, upper end rotating shaft.
2. 66kV cable voltage test universal insulation cap according to claim 1, is characterized in that: described left side semicircle shape wiring clamping plate (6), right side semicircle shape wiring clamping plate (9) outside are equipped with left side arc wiring card (7), right side arc wiring card (8); Described left side semicircle shape wiring clamping plate (6) left side, upper end connecting screw rod root rotating shaft (13) is fixedly connected with connecting screw rod (10) in the rotating shaft of left side, and in the rotating shaft of left side, connecting screw rod (10) is provided with connecting screw rod head end nut (11); In described left side semicircle shape wiring clamping plate (6), right side semicircle shape wiring clamping plate (9), left side arc wiring card (7), right side arc wiring card (8), semicircle clamping plate lower end connection rotating shaft (5), left side rotating shaft, connecting screw rod (10), connecting screw rod head end nut (11), concave shape opening clamp (12) and left side connecting screw rod root rotating shaft (13) are brass and are processed into.
3. 66kV cable voltage test universal insulation cap according to claim 1, it is characterized in that: described insulating support (32) upper end is provided with semicircular arc supporting base (14), the support bar head end that semicircular arc supporting base (14) lower end is connected to support bar (17) upper end is fixed on aluminum metal ring (16); In the middle part of support bar, aluminum metal ring (18) is located on support bar (17); Insulating support (32) lower end is provided with feet (19), and feet (19) one end to be connected in the middle part of support bar on aluminum metal ring (18); Support bar (17) bottom is provided with the fixing aluminum metal ring (21) in bottom, and aluminum metal ring (21) connects surrounding connecting rod (20) by rotating shaft screw bolt (23) is fixed in bottom, and the other end of connecting rod (20) is connected with feet (19) respectively; Described feet (19) is provided with four; Described support bar (17) is epoxy resin material; Described feet (19) and connecting rod (20) are aluminum alloy material.
4. 66kV cable voltage test universal insulation cap according to claim 1, is characterized in that: described universal insulation cap (30) is cast for silicon rubber and formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210159809.XA CN102707096B (en) | 2012-05-22 | 2012-05-22 | Universal insulation cap for voltage withstand test of 66kV cables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210159809.XA CN102707096B (en) | 2012-05-22 | 2012-05-22 | Universal insulation cap for voltage withstand test of 66kV cables |
Publications (2)
| Publication Number | Publication Date |
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| CN102707096A CN102707096A (en) | 2012-10-03 |
| CN102707096B true CN102707096B (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210159809.XA Active CN102707096B (en) | 2012-05-22 | 2012-05-22 | Universal insulation cap for voltage withstand test of 66kV cables |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104020323B (en) * | 2014-06-17 | 2017-01-11 | 国家电网公司 | High-voltage power cable tension clamp |
| CN107167633B (en) * | 2017-04-17 | 2020-12-18 | 东阳市光明电力建设有限公司 | Portable telescopic test wire support |
| CN106918769A (en) * | 2017-05-15 | 2017-07-04 | 国网青海省电力公司海东供电公司 | A kind of European plug cable voltage test tool of high pressure |
| CN107843749A (en) * | 2017-12-11 | 2018-03-27 | 冯志仑 | Insulation protection device |
| CN111584180B (en) * | 2020-06-05 | 2021-12-28 | 中国科学院合肥物质科学研究院 | Low-stress safe transmission device between rapid excitation superconducting magnet and current lead |
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| CA2575251A1 (en) * | 2004-08-03 | 2006-02-09 | Full Gauge Eletro Controles Ltda. | Insulating improvement of cables with sensors |
| CN201904443U (en) * | 2010-12-15 | 2011-07-20 | 河南省电力公司三门峡供电公司 | End insulating cap for conducting wire |
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| CN202599981U (en) * | 2012-05-22 | 2012-12-12 | 辽宁省电力有限公司沈阳供电公司 | General insulation cap for 66kV cable withstand voltage test |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3440447B2 (en) * | 1995-06-20 | 2003-08-25 | 大東電材株式会社 | Insulation cap for wire end |
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| CA2575251A1 (en) * | 2004-08-03 | 2006-02-09 | Full Gauge Eletro Controles Ltda. | Insulating improvement of cables with sensors |
| CN201904443U (en) * | 2010-12-15 | 2011-07-20 | 河南省电力公司三门峡供电公司 | End insulating cap for conducting wire |
| CN102227080A (en) * | 2011-04-14 | 2011-10-26 | 辽宁省电力有限公司盘锦供电公司 | Wire insulation cap |
| CN202599981U (en) * | 2012-05-22 | 2012-12-12 | 辽宁省电力有限公司沈阳供电公司 | General insulation cap for 66kV cable withstand voltage test |
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| CN102707096A (en) | 2012-10-03 |
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Owner name: STATE ELECTRIC NET CROP. Effective date: 20121009 |
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Effective date of registration: 20121009 Address after: 110811 eight Heping Street, 94 Heping Street, Liaoning, Shenyang Applicant after: Liaoning Shenyang Electric Power Supply Co., Ltd. Applicant after: State Grid Corporation of China Address before: 110811 eight Heping Street, 94 Heping Street, Liaoning, Shenyang Applicant before: Liaoning Shenyang Electric Power Supply Co., Ltd. |
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Address after: 110811 eight Heping Street, 94 Heping Street, Liaoning, Shenyang Patentee after: Shenyang Power Supply Company of State Grid Liaoning Electric Power Co., Ltd. Patentee after: State Grid Corporation of China Address before: 110811 eight Heping Street, 94 Heping Street, Liaoning, Shenyang Patentee before: Liaoning Shenyang Electric Power Supply Co., Ltd. Patentee before: State Grid Corporation of China |