CN103050239B - A kind of screw-type ejector of Transformer Bushing Tap signal - Google Patents
A kind of screw-type ejector of Transformer Bushing Tap signal Download PDFInfo
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- CN103050239B CN103050239B CN201210549994.3A CN201210549994A CN103050239B CN 103050239 B CN103050239 B CN 103050239B CN 201210549994 A CN201210549994 A CN 201210549994A CN 103050239 B CN103050239 B CN 103050239B
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- protective sleeve
- conducting rod
- end shield
- coupling
- screwed hole
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- 230000001681 protective effect Effects 0.000 claims abstract description 55
- 230000008878 coupling Effects 0.000 claims abstract description 46
- 238000010168 coupling process Methods 0.000 claims abstract description 46
- 238000005859 coupling reaction Methods 0.000 claims abstract description 46
- 238000006243 chemical reaction Methods 0.000 claims abstract description 33
- 238000009413 insulation Methods 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
Abstract
The invention provides a kind of screw-type ejector of Transformer Bushing Tap signal, the Leakage Current on the end shield stem of drawing condenser bushing end shield, it comprises: be set in the coupling on the interface of condenser bushing end shield by installing hole; The protective sleeve be connected with coupling, this protective sleeve offers wire guide; By the conducting rod that elastic insulation pieces is connected with protective sleeve; Detachably be connected with conducting rod, and be provided with the conversion thimble for the screwed hole with the threaded engagement on end shield stem.In the present embodiment, according to the conversion thimble of the screwed hole of the different size Selection different size of end shield stem, as long as namely change this step of thimble by changing, can reach the cooperation to different end shield stem, therefore avoid the problem changing conducting rod, reduce labour intensity.
Description
Technical field
The present invention relates to transformer technology field, particularly a kind of screw-type ejector of Transformer Bushing Tap signal.
Background technology
Transformer utilizes the principle of electromagnetic induction to change the device of alternating voltage, and it is the capital equipment of electric power system, mainly realizes the boosting in delivery of electrical energy process and step-down, and its reliability of operation directly affects the safety and stablization of electric power system.
Wherein, sleeve pipe is the important component part of power transformer, and it mainly realizes the connection of inside transformer outlet, insulation against ground and supporting role, is one of principal element causing transformer fault at present.Because the condition of work of sleeve pipe is very severe, so usually deterioration or the damage gradually because of environmental impact, and cause electric network fault.In order to ensure the normal work of electrical network, need to carry out effective preventive trial and on-line monitoring to sleeve pipe.
In the normal operation of sleeve pipe, end shield must ground connection, therefore sleeve pipe on-Line Monitor Device also need by the leakage current on end shield stem by signal cable draw detect after ground connection again.Conveniently have a power failure the wiring tested, and end shield stem is provided with screw thread mostly, and the ejector employing therefore for end shield leakage current is threaded the most convenient and reliable.If conducting rod is directly connected with screw thread stem, when disconnecting, along with the rotation of screw thread, the signal cable of conducting rod end must twist rotation, probably causes signal cable junction to disconnect, causes end shield to open a way, jeopardize casing safety.
In addition, in order to adapt on the stem of different size, need to arrange a series of conducting rod, when detecting, need constantly to change conducting rod, to reach the cooperation of the stem to different size, change the process of conducting rod, very complicated, serious wastes labour intensity.
Therefore, how providing a kind of screw-type ejector of Transformer Bushing Tap signal, to reduce labour intensity, is the current technical issues that need to address of those skilled in the art.
Summary of the invention
The object of this invention is to provide a kind of screw-type ejector of Transformer Bushing Tap signal, to reduce labour intensity.
For solving the problems of the technologies described above, the invention provides following technical scheme:
A screw-type ejector for Transformer Bushing Tap signal, the Leakage Current on the end shield stem of drawing condenser bushing end shield, comprising:
The coupling on the interface of described condenser bushing end shield is set in by installing hole;
The protective sleeve be connected with described coupling, described protective sleeve offers wire guide;
By the conducting rod that elastic insulation pieces is connected with described protective sleeve;
Detachably be connected with described conducting rod, and be provided with the conversion thimble for the screwed hole with the threaded engagement on described end shield stem.
Preferably, in above-mentioned device, the axis of described conducting rod and the dead in line of described installing hole, and the side of the close described installing hole of described conducting rod is circumferentially provided with the connection lobe that at least two lobes surround the plug-in opening coordinated with described conversion thimble, one end away from described installing hole of described conducting rod offers the first screwed hole, and described Flexible Connector is set on described connection lobe.
Preferably, in above-mentioned device, also comprise for connecting adapter in described protective sleeve and described elastic insulation pieces.
Preferably, in above-mentioned device, the outer surface of described interior adapter is connected by screw thread with the inwall of described protective sleeve, and the outer surface of described interior adapter offers the second screwed hole.
Preferably, in above-mentioned device, also comprise one end and be connected with described first screwed hole, the protective resistance that the other end is connected with described second screwed hole.
Preferably, in above-mentioned device, described screwed hole is arranged on described conversion thimble near one end of installing hole, and the other end of described conversion thimble is the polished rod coordinated with described plug-in opening.
Preferably, in above-mentioned device, also comprise the attaching nut for connecting described coupling and described protective sleeve.
Preferably, in above-mentioned device, also comprise the outer surface being arranged on described protective sleeve, and for limiting the first spacing jump ring that described attaching nut moves to the direction away from described coupling; Be arranged on described conducting rod, for the second spacing jump ring preventing described conducting rod from departing from described elastic insulation pieces.
Preferably, in above-mentioned device, also comprise the first sealing device of the junction of the interface for sealing described coupling and described condenser bushing end shield and the second sealing device for sealing described coupling and described protective sleeve.
Preferably, in above-mentioned device, also comprise the water joint being arranged on described wire guide place.
As can be seen from above-mentioned technical scheme, the invention provides a kind of screw-type ejector of Transformer Bushing Tap signal, electric current on the end shield stem of drawing condenser bushing end shield, it comprises: be set in the coupling on the interface of condenser bushing end shield by installing hole; The protective sleeve be connected with coupling, this protective sleeve offers wire guide; By the conducting rod that elastic insulation pieces is connected with protective sleeve; Detachably be connected with conducting rod, and be provided with the conversion thimble for the screwed hole with the threaded engagement on end shield stem.In use, coupling is set in by installing hole on the interface of condenser bushing end shield, and end shield stem is connected by threaded engagement with conversion thimble, because conversion thimble is connected with conducting rod, therefore, by the current delivery on end shield stem to conducting rod, when detecting, can reach testing goal by the electric current detected on conducting rod.In the present embodiment, according to the conversion thimble of the screwed hole of the different size Selection different size of end shield stem, as long as namely change this step of thimble by changing, can reach the cooperation to different end shield stem, therefore avoid the problem changing conducting rod, reduce labour intensity.
Accompanying drawing explanation
The structural representation of the screw-type ejector of the Transformer Bushing Tap signal that Fig. 1 provides for the embodiment of the present invention;
The structural representation of the conducting rod that Fig. 2 provides for the embodiment of the present invention;
The cutaway view of the conducting rod that Fig. 3 provides for the embodiment of the present invention;
The structural representation of the conversion thimble that Fig. 4 provides for the embodiment of the present invention;
The cutaway view of the conversion thimble that Fig. 5 provides for the embodiment of the present invention.
Embodiment
Core of the present invention is to provide a kind of screw-type ejector of Transformer Bushing Tap signal, to reduce labour intensity.
In order to make those skilled in the art person understand the present invention program better, below in conjunction with drawings and embodiments, the present invention is described in further detail.
Please refer to shown in Fig. 1-Fig. 5, the invention discloses a kind of screw-type ejector of Transformer Bushing Tap signal, electric current on the end shield stem of drawing condenser bushing end shield, it comprises: be set in the coupling 12 on the interface 1 of condenser bushing end shield by installing hole; The protective sleeve 8 be connected with coupling 12, this protective sleeve 8 offers wire guide; By the conducting rod 6 that elastic insulation pieces 4 is connected with protective sleeve 8; Detachably be connected with conducting rod 6, and be provided with the conversion thimble 2 for the screwed hole 21 with the threaded engagement on end shield stem.
In use, coupling 12 is set on the interface 1 of condenser bushing end shield by installing hole, and end shield stem is connected by threaded engagement with conversion thimble 2, because conversion thimble 2 is connected with conducting rod 6, therefore, by the current delivery on end shield stem to conducting rod 6, when detecting, can reach testing goal by the electric current detected on conducting rod 6.In the present embodiment, can according to the conversion thimble 2 of the screwed hole 21 of the different size Selection different size of end shield stem, as long as namely by changing this step of conversion thimble 2, the cooperation to different end shield stem can be reached, therefore avoid the problem changing conducting rod 6, reduce labour intensity.
In order to ensure the convenience connected, by the axis of conducting rod 6 and the dead in line of installing hole in the present embodiment, namely conducting rod 6 is positioned opposite with installing hole.For the ease of changing conversion thimble 2, ensure in the present embodiment, conducting rod 6 to be circumferentially provided with the stability that conversion thimble 2 is installed at least two lobes near the side of installing hole and can to surround and the connection lobe 61 changing the plug-in opening that thimble 2 coordinates simultaneously.When detecting, conversion thimble 2 being inserted in plug-in opening, realizing the connection of conversion thimble 2 and conducting rod 6.Because connection lobe 61 is at least two lobes, namely the diameter of its plug-in opening surrounded can regulate along with the size of conversion thimble 2.In order to realize the clamping to the conversion thimble 2 be inserted in plug-in opening, preferably, Flexible Connector 4 is set on connection lobe 61.Meanwhile, for the ease of the connection of conducting rod 6 with external signal cable, conducting rod 6 is also provided with the first screwed hole 62 for being connected with external signal cable.In testing process, conducting rod 6 is connected with end shield stem by conversion thimble 2, to realize the current delivery on end shield stem on conducting rod 6, external signal cable is then by the first screwed hole 62, realize the connection with conducting rod 6, thus realize the object of the electric current detected on conducting rod 6.
In a particular embodiment, do not limit the number and length that connect lobe 61, operator can set according to different needs.Particularly, connecting lobe 61 can be three lobes or pintongs, and its material is the copper material with electric conductivity.
In specific embodiment, also comprising for connecting adapter 3 in protective sleeve 8 and elastic insulation pieces 4, namely when mounted, being realized the connection of protective sleeve 8 and elastic insulation pieces 4 by interior adapter 3.When actual setting, interior adapter 3 is set to hollow structure, and elastic insulation pieces 4 is fastened on the hollow position place of interior adapter 3, to realize the connection to elastic insulation pieces 4.
Preferably, the outer surface of interior adapter 3 is connected by screw thread with the inwall of protective sleeve 8, and the outer surface of interior adapter 3 is provided with the second screwed hole (not marking in figure).It will be appreciated by persons skilled in the art that interior adapter 3 also realizes being connected by other connected modes with between protective sleeve 8, and all in protection range.
In further embodiment, this plug-in type bottom shielding of bushing signal ejector also comprises the protective resistance (not shown) be arranged in the first screwed hole 62 and the second screwed hole.One end of this protective resistance is arranged in the first screwed hole 62, and the other end is arranged in the second screwed hole.By arranging protective resistance, can guarantee that bottom shielding of bushing still can pass through protective resistance 7 ground connection, prevents bottom shielding of bushing from opening a way, and ensures that casing safety runs when the unexpected open circuit of outside signal cable.
The concrete structure of the conversion thimble 2 in the screw-type ejector of disclosed Transformer Bushing Tap signal is in one embodiment that its one end near installing hole is provided with above-mentioned screwed hole 21, and the other end is the polished rod 22 that can coordinate with plug-in opening.As long as what it will be appreciated by persons skilled in the art that this conversion thimble 2 has the screwed hole 21 that can coordinate with end shield stem and the linkage section coordinated with plug-in opening.
Additionally provide the connected mode of a kind of protective sleeve 8 and coupling 12 in the present embodiment, particularly, realized the connection of coupling 12 and protective sleeve 8 by attaching nut 10.First projection is set in the side away from coupling 12 of attaching nut 10, and the internal diameter of the first projection is greater than the external diameter of protective sleeve 8, correspondingly, protruding in the arranged outside second of protective sleeve 8.When mounted, attaching nut 10 is connected with coupling 12 by screw thread, and convexes to form the first groove with first, and the second projection on protective sleeve 8 is just stuck in above-mentioned groove, thus by the connection of attaching nut 10 by coupling 12 and protective sleeve 8.
In addition, coupling 12 arranges the second groove, correspondingly, interior adapter 3 arranges the 3rd projection.During installation, the 3rd projection of interior adapter 3 can extend in the second groove of coupling 12, thus realizes spacing connection.By above-mentioned setting, effectively ensure that the sealing of device, and play this connected mode easy accessibility, greatly reduce the labour intensity of operator.
Particularly, attaching nut 10 arranges internal thread, the external screw thread with screw-internal thread fit is set in coupling 12 accordingly, namely by threaded engagement, realize the connection of attaching nut 10 and coupling 12; Attaching nut 10 being provided with groove, correspondingly, protective sleeve 8 arranging the projection with groove fit, namely by being inserted in groove by projection, to realize the connection of attaching nut 10 and protective sleeve 8.In actual production, also attaching nut 10 can be fixed by screw with coupling 12, attaching nut 10 is fixed by screw with protective sleeve 8.The present embodiment does not limit the connected mode between coupling 12 and protective sleeve 8, as long as the connection both realizing.
In actual mechanical process, after loosening to prevent being threaded between attaching nut 10 with coupling 12, attaching nut 10 comes off from coupling 12, is provided with the first spacing jump ring 9 moved to the direction away from coupling 12 for limited connection nut 10 in the present embodiment on protective sleeve 8.When attaching nut 10 loosens, there is relative displacement in itself and coupling 12, and when it moves to the first spacing jump ring 9 position, attaching nut 10 can not continue to run, thus prevents the problem that it comes off from coupling 12.
In addition, in order to prevent conducting rod 6 from departing from from elastic insulation pieces 4, the present embodiment is also provided with the second spacing jump ring 5, particularly, the second jump ring 5 is arranged on one end away from installing hole of conducting rod 6.Because elastic insulation pieces 4 inner ring is connected with conducting rod 6, outer ring is connected with interior adapter 3, therefore, when being extracted from connection lobe 61 by end shield lead-out wire, if conducting rod 6 be connected with elastic insulation pieces 4 tightr time, can cause conducting rod 6 with end shield lead-out wire depart from elastic insulation pieces 4.The application can prevent elastic insulation pieces 4 and conducting rod 6 from relative displacement occurring by the second jump ring 5, thus prevents conducting rod 6 from departing from this device.
On the basis of technique scheme, in order to ensure the overall tightness of this plug-in type bottom shielding of bushing signal ejector, to prevent the problem of leaking electricity, also comprise the first sealing device (not shown) be arranged between coupling 12 and end shield interface in the present embodiment, and be arranged on the second sealing device 11 between coupling 12 and protective sleeve 8.Particularly, when coupling 12 is connected with the interface 1 of condenser bushing end shield, the first sealing device ensures sealing between the two; When coupling 12 is tightened with protective sleeve 8, the second sealing device 11 ensures sealing between the two.Preferably, this first sealing device and the second sealing device 11 can be all seal washer, but the present embodiment does not limit its concrete form.
Further in embodiment, in order to ensure the fail safe of the external signal cable of drawing from wire guide, be provided with water joint 7 at wire guide place.The sealing to wire guide place is realized by water joint 7.The shell of this water joint 7 is metal material, to ensure intensity and the hardness of water joint 7; And inside is plastic material, to ensure insulating properties and the sealing of water joint 7.Be not limited in above-mentioned material in the present embodiment, when practical operation, can select according to different needs.
Before installing at the scene, first each parts of protective sleeve 8 inside are installed, the water joint 7 of signal cable by protective sleeve 8 end is drawn.When mounted, first the ground connection cap of the interface of bottom shielding of bushing is backed out, the conversion thimble 2 matched with end shield stem screw thread is spun on stem, and coupling 12 is fixed on the position of original ground connection cap by screw thread.Then mounted protective sleeve overall structure coupling 12 will be aimed at before, conversion thimble 2 is just in time inserted in the plug-in opening of conducting rod 6, rotate protective sleeve overall structure, until cannot rotate, now, the 3rd projection of adapter 3 front end just in time snaps in the second groove of coupling 12.Finally the external screw thread that attaching nut 10 aims in coupling 12 is tightened, realize the connection between bottom shielding of bushing and coupling 12.
When carrying out sleeve pipe power failure test, need to pull down this signal ejector.Now turn on attaching nut 10, then protective sleeve overall structure is pulled up, do not need to take apart between coupling 12 and conversion thimble 2.Protective resistance, distal tip signal cable are removed by this dismounting mode together, can prevent causing signal cable to reverse when removing and cause connecting the problem of opening a way, forget the hidden danger loaded onto after also can avoiding removing protective resistance simultaneously.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. a screw-type ejector for Transformer Bushing Tap signal, the Leakage Current on the end shield stem of drawing condenser bushing end shield, is characterized in that, comprising:
The coupling (12) on the interface (1) of described condenser bushing end shield is set in by installing hole;
The protective sleeve (8) be connected with described coupling (12), (8) offer wire guide to described protective sleeve;
By the conducting rod (6) that elastic insulation pieces (4) is connected with described protective sleeve (8);
Detachably be connected with described conducting rod (6), and be provided with the conversion thimble (2) for the screwed hole (21) with the threaded engagement on described end shield stem;
The axis of described conducting rod (6) and the dead in line of described installing hole, and the side of the close described installing hole of described conducting rod (6) is circumferentially provided with the connection lobe (61) that at least two lobes surround the plug-in opening coordinated with described conversion thimble (2), one end away from described installing hole of described conducting rod (6) offers the first screwed hole (62), and described elastic insulation pieces (4) is set on described connection lobe (61).
2. device according to claim 1, is characterized in that, also comprises the interior adapter (3) for connecting described protective sleeve (8) and described elastic insulation pieces (4).
3. device according to claim 2, it is characterized in that, the outer surface of described interior adapter (3) is connected by screw thread with the inwall of described protective sleeve (8), and the outer surface of described interior adapter (3) offers the second screwed hole.
4. device according to claim 3, is characterized in that, also comprises one end and is connected with described first screwed hole (62), the protective resistance that the other end is connected with described second screwed hole.
5. device according to claim 1, it is characterized in that, described screwed hole (21) is arranged on described conversion thimble (2) one end near installing hole, and the other end of described conversion thimble (2) is the polished rod (22) coordinated with described plug-in opening.
6. device according to claim 1, is characterized in that, also comprises the attaching nut (10) for connecting described coupling (12) and described protective sleeve (8).
7. device according to claim 6, it is characterized in that, also comprise the outer surface being arranged on described protective sleeve (8), and for limiting the first spacing jump ring (9) that described attaching nut (10) moves to the direction away from described coupling (12); Be arranged on described conducting rod (6), for the second spacing jump ring (5) preventing described conducting rod (6) from departing from described elastic insulation pieces (4).
8. the device according to any one of claim 1-7, it is characterized in that, also comprising for sealing described coupling (12) and the first sealing device of the junction of the interface (1) of described condenser bushing end shield and the second sealing device (11) for sealing described coupling (12) and described protective sleeve (8).
9. device according to claim 8, is characterized in that, also comprises the water joint (7) being arranged on described wire guide place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210549994.3A CN103050239B (en) | 2012-12-17 | 2012-12-17 | A kind of screw-type ejector of Transformer Bushing Tap signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210549994.3A CN103050239B (en) | 2012-12-17 | 2012-12-17 | A kind of screw-type ejector of Transformer Bushing Tap signal |
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| Publication Number | Publication Date |
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| CN103050239A CN103050239A (en) | 2013-04-17 |
| CN103050239B true CN103050239B (en) | 2015-12-30 |
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| CN201210549994.3A Active CN103050239B (en) | 2012-12-17 | 2012-12-17 | A kind of screw-type ejector of Transformer Bushing Tap signal |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344792B (en) * | 2013-06-28 | 2015-08-19 | 国家电网公司 | Guiding structure under special end shield monitored by a kind of bushing shell for transformer |
| CN103325551A (en) * | 2013-06-28 | 2013-09-25 | 国家电网公司 | End screen outgoing line protection and anti-interference device |
| CN104965115A (en) * | 2015-06-25 | 2015-10-07 | 国网山东省电力公司济南供电公司 | Capacitive device end screen current lossless sampling device |
| CN109116084B (en) * | 2018-07-20 | 2021-06-11 | 广西君和自动化科技发展有限公司 | Current metering protection device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3783182A (en) * | 1972-09-15 | 1974-01-01 | Westinghouse Electric Corp | Electrical bushing assembly having a direct cable to conductor rod terminal assembly |
| CN101615497A (en) * | 2009-05-20 | 2009-12-30 | 北京华电云通电力技术有限公司 | The integral connecting structure of transformer and current sensor |
| CN101710655A (en) * | 2009-12-02 | 2010-05-19 | 中国广东核电集团有限公司 | On-line monitoring grounding wire lead-out structure of high-voltage sleeve |
| CN202305587U (en) * | 2011-10-31 | 2012-07-04 | 马鞍山市万缘电气有限责任公司 | Standard interface device for leading out leakage current signal of bushing of power transformer |
| CN202996529U (en) * | 2012-12-17 | 2013-06-12 | 浙江省电力公司电力科学研究院 | Threaded type leading-out device of transformer bushing end screen signal |
-
2012
- 2012-12-17 CN CN201210549994.3A patent/CN103050239B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3783182A (en) * | 1972-09-15 | 1974-01-01 | Westinghouse Electric Corp | Electrical bushing assembly having a direct cable to conductor rod terminal assembly |
| CN101615497A (en) * | 2009-05-20 | 2009-12-30 | 北京华电云通电力技术有限公司 | The integral connecting structure of transformer and current sensor |
| CN101710655A (en) * | 2009-12-02 | 2010-05-19 | 中国广东核电集团有限公司 | On-line monitoring grounding wire lead-out structure of high-voltage sleeve |
| CN202305587U (en) * | 2011-10-31 | 2012-07-04 | 马鞍山市万缘电气有限责任公司 | Standard interface device for leading out leakage current signal of bushing of power transformer |
| CN202996529U (en) * | 2012-12-17 | 2013-06-12 | 浙江省电力公司电力科学研究院 | Threaded type leading-out device of transformer bushing end screen signal |
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Address after: Hangzhou City, Zhejiang province 310014 eight District No. 1, Huadian Zhaohui Applicant after: Electric Power Research Institute of State Grid Zhejiang Electric Power Company Applicant after: State Grid Corporation of China Applicant after: Hangzhou Kelin Electric Power Equipment Co., Ltd. Address before: Hangzhou City, Zhejiang province 310014 eight District No. 1, Huadian Zhaohui Applicant before: Electric Power Science Research Institute of Zhejiang Electric Power Company Applicant before: State Grid Corporation of China Applicant before: Hangzhou Kelin Electric Power Equipment Co., Ltd. |
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Address after: Hangzhou City, Zhejiang province 310014 eight District No. 1, Huadian Zhaohui Co-patentee after: State Grid Corporation of China Patentee after: Electric Power Research Institute of State Grid Zhejiang Electric Power Company Co-patentee after: Hangzhou Colin electric Limited by Share Ltd Address before: Hangzhou City, Zhejiang province 310014 eight District No. 1, Huadian Zhaohui Co-patentee before: State Grid Corporation of China Patentee before: Electric Power Research Institute of State Grid Zhejiang Electric Power Company Co-patentee before: Hangzhou Kelin Electric Power Equipment Co., Ltd. |
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