CN103050240B - A kind of Transformer Bushing Tap signal ejector - Google Patents
A kind of Transformer Bushing Tap signal ejector Download PDFInfo
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- CN103050240B CN103050240B CN201210551614.XA CN201210551614A CN103050240B CN 103050240 B CN103050240 B CN 103050240B CN 201210551614 A CN201210551614 A CN 201210551614A CN 103050240 B CN103050240 B CN 103050240B
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- 230000001681 protective effect Effects 0.000 claims abstract description 56
- 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
- 238000009413 insulation Methods 0.000 claims abstract description 30
- 238000007789 sealing Methods 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000003780 insertion Methods 0.000 abstract description 3
- 230000037431 insertion Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000003449 preventive effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000005684 electric field 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
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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Abstract
The invention provides a kind of Transformer Bushing Tap signal ejector, the Leakage Current on the end shield lead-out wire 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, one end of the close installing hole of this conducting rod circumferentially has at least two lobes to form the connection lobe of the plug-in opening coordinated with end shield lead-out wire, and elastic insulation pieces is set on connection lobe.The large I of plug-in opening changes with the insertion depth of end shield lead-out wire, and be set in the elastic insulation pieces connected on lobe, by the Flexible change of self, realize the clamping to end shield lead-out wire, therefore, the contact of end shield lead-out wire and bottom shielding of bushing signal ejector is that face contacts by the present invention, i.e. circumferential contact, increase effectively contact area, and then improve the stability of connection.
Description
Technical field
The present invention relates to transformer technology field, particularly a kind of Transformer Bushing Tap signal ejector.
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 its usually deterioration or 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 order to be uniformly distributed electric field, insulating barrier between bushing is shielded by multiple layer metal and shields is formed, end shield is its last screen, for with ground equipotential link, in operation, it must reliable ground, therefore cannot obtain end shield Leakage Current signal, and need untie when preventive trial and be connected so that the capacitance of detection thimble and dielectric loss with earthy.Sleeve pipe insulation line monitoring device needs to measure Leakage Current from bottom shielding of bushing, and one end of electric current ejector is connected with the end shield lead-out wire of bottom shielding of bushing, and the other end is linked into current measuring device, and then ground connection.
But, the connection of the conducting rod of current end shield ejector and the end shield lead-out wire of bottom shielding of bushing is that contacts side surfaces connects, make contact area less, be unfavorable for both connections, especially when end shield ejector shakes, be easy to cause connecting instability, and then the accuracy that impact is measured.
Therefore, how to provide a kind of Transformer Bushing Tap signal ejector, to improve contact area, and then improving the stability connected, 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 Transformer Bushing Tap signal ejector, to improve contact area, and then improve the stability connected.
For solving the problems of the technologies described above, the invention provides following technical scheme:
A kind of Transformer Bushing Tap signal ejector, the Leakage Current on the end shield lead-out wire 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, one end of the close described installing hole of described conducting rod circumferentially has at least two lobes to form the connection lobe of the plug-in opening coordinated with described end shield lead-out wire, and described elastic insulation pieces is set on described connection lobe.
Preferably, in above-mentioned device, the axis of described conducting rod and the axis being parallel of described protective sleeve, and one end away from described installing hole of described conducting rod offers the first screwed hole.
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 the protective resistance be arranged in described first screwed hole and the second screwed hole.
Preferably, in above-mentioned device, also comprise the attaching nut for connecting described coupling and described protective sleeve.
Preferably, in above-mentioned device, described attaching nut is provided with internal thread, and described coupling is provided with the external screw thread with described screw-internal thread fit, and described attaching nut is provided with the first projection, described protective sleeve is provided with the second projection.
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 for sealing described coupling and described end shield interface 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 Transformer Bushing Tap signal ejector, Leakage Current on the end shield lead-out wire 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, one end of the close installing hole of this conducting rod circumferentially has at least two lobes to form the connection lobe of the plug-in opening coordinated with end shield lead-out wire, and elastic insulation pieces is set on connection lobe.When detecting, coupling being arranged on the interface of condenser bushing end shield, ensureing that end shield lead-out wire is inserted in the plug-in opening of connection lobe formation simultaneously, namely achieving the current delivery on end shield lead-out wire on conducting rod.Plug-in opening connects lobe by least two lobes and is formed, namely the large I of plug-in opening changes with the insertion depth of end shield lead-out wire, and be set in the elastic insulation pieces connected on lobe, by the Flexible change of self, realize the clamping to the end shield lead-out wire be plugged in plug-in opening, therefore, the present invention changes the contact of end shield lead-out wire and bottom shielding of bushing signal ejector into face and contacts, namely the circumferential contact of end shield lead-out wire, increase effectively contact area, and then improves the stability of connection.
Accompanying drawing explanation
The structural representation of the Transformer Bushing Tap signal ejector 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.
Embodiment
Core of the present invention is to provide a kind of Transformer Bushing Tap signal ejector, to improve contact area, and then improves the stability connected.
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. 3, the invention discloses a kind of Transformer Bushing Tap signal ejector, Leakage Current on the end shield lead-out wire of drawing condenser bushing end shield, it comprises: be set in the coupling 1 on the interface of condenser bushing end shield by installing hole; The protective sleeve 4 be connected with coupling 1, this protective sleeve 4 offers wire guide; By the conducting rod 6 that elastic insulation pieces 9 is connected with protective sleeve 4, one end of the close installing hole of this conducting rod 6 circumferentially has at least two lobes to form the connection lobe 61 of the plug-in opening coordinated with end shield lead-out wire, and elastic insulation pieces 9 is set on connection lobe 61.
When detecting, coupling 1 being arranged on the interface of condenser bushing end shield, ensureing that end shield lead-out wire is inserted in the plug-in opening of connection lobe 61 formation simultaneously, namely achieving the current delivery on end shield lead-out wire on conducting rod 6.Plug-in opening connects lobe 61 by least two lobes and is formed, namely the large I of plug-in opening changes with the insertion depth of end shield lead-out wire, and be set in the elastic insulation pieces 9 connected on lobe 61, by the Flexible change of self, realize the clamping to the end shield lead-out wire be plugged in plug-in opening, therefore, the present invention changes the contact of end shield lead-out wire and bottom shielding of bushing signal ejector into face and contacts, namely with the circumferential contact of end shield lead-out wire, increase effectively contact area, and then improve the stability of connection.
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 the present embodiment, the axis of the axis of conducting rod 6 and protective sleeve 4 is set to be arranged in parallel, and offers the first screwed hole 62 in one end away from installing hole of conducting rod 6.Be inserted in the plug-in opening connecting lobe 61 formation for the ease of end shield lead-out wire, preferably, the dead in line of the axis of plug-in opening and installing hole arranged, namely the corresponding installing hole of plug-in opening is arranged.In testing process, conducting rod 6 is by being connected with end shield lead-out wire, and to realize by the current delivery on end shield lead-out wire on conducting rod, 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 specific embodiment, also comprising for connecting adapter 11 in protective sleeve 4 and elastic insulation pieces 9, namely when mounted, being realized the connection of protective sleeve 4 and elastic insulation pieces 9 by interior adapter 11.When actual setting, interior adapter 11 is set to hollow structure, and elastic insulation pieces 9 is fastened on the hollow position place of interior adapter 11, to realize the connection to elastic insulation pieces 9.Preferably, the outer ring of elastic insulation pieces 9 and the inner ring of interior adapter 11 are threaded connection, and the inner ring of elastic insulation pieces 9 and the outer ring of described conducting rod 6 are threaded connection.
Preferably, the outer surface of interior adapter 11 is connected by screw thread with the inwall of protective sleeve 4, and the outer surface of interior adapter 11 is provided with the second screwed hole (not marking in figure).It will be appreciated by persons skilled in the art that interior adapter 11 also realizes being connected by other connected modes with between protective sleeve 4, and all in protection range.
In further embodiment, this Transformer Bushing Tap signal ejector also comprises the protective resistance 7 be arranged between the first screwed hole 62 and the second screwed hole.One end of this protective resistance 7 is arranged in the first screwed hole 62, and the other end is arranged in the second screwed hole.By arranging protective resistance 7, 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.
Additionally provide the connected mode of a kind of protective sleeve 4 and coupling 1 in the present embodiment, particularly, realized the connection of coupling 1 and protective sleeve 4 by attaching nut 2.It will be appreciated by persons skilled in the art that and can to connect according to different connected modes in actual production, and all in the present embodiment protection range.
Particularly, attaching nut 2 arranges internal thread, the external screw thread with screw-internal thread fit is set in coupling 1 accordingly, namely by threaded engagement, realize the connection of attaching nut 2 and coupling 1.First projection is set in the side away from coupling 1 of attaching nut 2, and the internal diameter of the first projection is greater than the external diameter of protective sleeve 4, correspondingly, protruding in the arranged outside second of protective sleeve 4.When mounted, attaching nut 2 is connected with coupling 1 by screw thread, and convexes to form the first groove with first, and the second projection on protective sleeve 4 is just stuck in above-mentioned groove, thus by the connection of attaching nut 2 by coupling 1 and protective sleeve 4.
In addition, coupling 1 arranges the second groove, correspondingly, interior adapter 11 arranges the 3rd projection.During installation, the 3rd projection of interior adapter 11 can extend in the second groove of coupling 1, 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.
In actual mechanical process, after loosening to prevent being threaded between attaching nut 2 with coupling 1, attaching nut 2 comes off from coupling 1, is provided with the first spacing jump ring 3 moved to the direction away from coupling 1 for limited connection nut 2 in the present embodiment on protective sleeve 4.When attaching nut 2 loosens, there is relative displacement in itself and coupling 1, and when it moves to the first spacing jump ring 3 position, attaching nut 2 can not continue to run, thus prevents the problem that it comes off from coupling 1.
In addition, in order to prevent conducting rod 6 from departing from from elastic insulation pieces 9, the present embodiment is also provided with the second spacing jump ring 8, particularly, the second jump ring 8 is arranged on one end away from installing hole of conducting rod 6.Because elastic insulation pieces 9 inner ring is connected with conducting rod 6, outer ring is connected with interior adapter 11, therefore, when being extracted from connection lobe 61 by end shield lead-out wire, if conducting rod 6 be connected with elastic insulation pieces 9 tightr time, can cause conducting rod 6 with end shield lead-out wire depart from elastic insulation pieces 9.The application can prevent elastic insulation pieces 9 and conducting rod 6 from relative displacement occurring by the second jump ring 8, 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 Transformer Bushing Tap signal ejector, to prevent the problem of leaking electricity, also comprise the first sealing device 12 be arranged between coupling 1 and end shield interface in the present embodiment, and be arranged on the second sealing device 10 between coupling 1 and protective sleeve 4.Particularly, when coupling 1 is connected with the interface of condenser bushing end shield, the first sealing device 12 ensures sealing between the two; When coupling 1 is tightened with protective sleeve 4, the second sealing device 10 ensures sealing between the two.Preferably, this first sealing device 12 and the second sealing device 10 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 5 at wire guide place.The sealing to wire guide place is realized by water joint 5.The shell of this water joint 5 is metal material, to ensure intensity and the hardness of water joint 5; And inside is plastic material, to ensure insulating properties and the sealing of water joint 5.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 4 inside are installed, the water joint 5 of signal cable by protective sleeve 4 end is drawn.When mounted, first the ground connection cap of the interface of bottom shielding of bushing is backed out, and coupling 1 is fixed on the position of original ground connection cap by screw thread.Then mounted protective sleeve overall structure coupling 1 will be aimed at before, sleeve end shield lead-out wire is made just in time to insert in the plug-in opening of conducting rod 6, rotate protective sleeve overall structure, until cannot rotate, now, the 3rd projection of adapter 11 front end just in time snaps in the second groove of coupling 1.Finally the external screw thread that attaching nut 2 aims in coupling 1 is tightened, realize the connection between bottom shielding of bushing and coupling 1.
When carrying out sleeve pipe power failure test, need to pull down this signal ejector.Now turn on attaching nut 2, then protective sleeve overall structure pulled up, coupling 1 does not need to pull down.Protective resistance 7, 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 7 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 (10)
1. a Transformer Bushing Tap signal ejector, the Leakage Current on the end shield lead-out wire of drawing condenser bushing end shield, is characterized in that, comprising:
The coupling (1) on the interface of described condenser bushing end shield is set in by installing hole;
The protective sleeve (4) be connected with described coupling (1), (4) offer wire guide to described protective sleeve;
By the conducting rod (6) that elastic insulation pieces (9) is connected with described protective sleeve (4), one end of the close described installing hole of described conducting rod (6) circumferentially has at least two lobes to form the connection lobe (61) of the plug-in opening coordinated with described end shield lead-out wire, and described elastic insulation pieces (9) is set on described connection lobe (61).
2. device according to claim 1, is characterized in that, the axis of described conducting rod (6) and the axis being parallel of described protective sleeve (4), and one end away from described installing hole of described conducting rod (6) offers the first screwed hole (62).
3. device according to claim 2, is characterized in that, also comprises the interior adapter (11) for connecting described protective sleeve (4) and described elastic insulation pieces (9).
4. device according to claim 3, is characterized in that, the outer surface of described interior adapter (11) is connected by screw thread with the inwall of described protective sleeve (4), and the outer surface of described interior adapter (11) offers the second screwed hole.
5. device according to claim 4, is characterized in that, also comprises the protective resistance (7) be arranged in described first screwed hole (62) and the second screwed hole.
6. device according to claim 1, is characterized in that, also comprises the attaching nut (2) for connecting described coupling (1) and described protective sleeve (4).
7. device according to claim 6, it is characterized in that, described attaching nut (2) is provided with internal thread, described coupling (1) is provided with the external screw thread with described screw-internal thread fit, and described attaching nut (2) is provided with the first projection, described protective sleeve (4) is provided with the second projection.
8. device according to claim 6, is characterized in that, also comprises the outer surface being arranged on described protective sleeve (4), and for limiting the first spacing jump ring (3) that described attaching nut (2) moves to the direction away from described coupling (1); Be arranged on described conducting rod (6), for the second spacing jump ring (8) preventing described conducting rod (6) from departing from described elastic insulation pieces (9).
9. the device according to any one of claim 1-8, it is characterized in that, also comprising for sealing described coupling (1) and first sealing device (12) of the junction of described end shield interface and the second sealing device (10) for sealing described coupling (1) and described protective sleeve (4).
10. device according to claim 9, is characterized in that, also comprises the water joint (5) being arranged on described wire guide place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210551614.XA CN103050240B (en) | 2012-12-17 | 2012-12-17 | A kind of Transformer Bushing Tap signal ejector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210551614.XA CN103050240B (en) | 2012-12-17 | 2012-12-17 | A kind of Transformer Bushing Tap signal ejector |
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| Publication Number | Publication Date |
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| CN103050240A CN103050240A (en) | 2013-04-17 |
| CN103050240B true CN103050240B (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210551614.XA Active CN103050240B (en) | 2012-12-17 | 2012-12-17 | A kind of Transformer Bushing Tap signal ejector |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103325551A (en) * | 2013-06-28 | 2013-09-25 | 国家电网公司 | End screen outgoing line protection and anti-interference device |
| 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 |
| CN106940415B (en) * | 2017-02-07 | 2020-09-25 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Detection system for capacitive bushings with measurement terminal and end screen grounding terminal |
| CN108899159A (en) * | 2018-06-21 | 2018-11-27 | 广东电网有限责任公司 | A kind of protective device of for transformer |
| CN109177957A (en) * | 2018-08-21 | 2019-01-11 | 吉林东光奥威汽车制动系统有限公司 | A kind of vacuum booster of pair of input power push rod limit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101661848A (en) * | 2009-10-09 | 2010-03-03 | 闫淼江 | Contact assembly of isolating switch |
| CN202256571U (en) * | 2011-10-31 | 2012-05-30 | 马鞍山市万缘电气有限责任公司 | Leakage current signal lead-out device of power transformer sleeve for online monitoring |
| CN202443837U (en) * | 2012-02-08 | 2012-09-19 | 广西电网公司南宁供电局 | Leading-out device for bushing end shield of transformer |
| CN202996530U (en) * | 2012-12-17 | 2013-06-12 | 浙江省电力公司电力科学研究院 | Transformer bushing end screen signal leading-out apparatus |
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2012
- 2012-12-17 CN CN201210551614.XA patent/CN103050240B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101661848A (en) * | 2009-10-09 | 2010-03-03 | 闫淼江 | Contact assembly of isolating switch |
| CN202256571U (en) * | 2011-10-31 | 2012-05-30 | 马鞍山市万缘电气有限责任公司 | Leakage current signal lead-out device of power transformer sleeve for online monitoring |
| CN202443837U (en) * | 2012-02-08 | 2012-09-19 | 广西电网公司南宁供电局 | Leading-out device for bushing end shield of transformer |
| CN202996530U (en) * | 2012-12-17 | 2013-06-12 | 浙江省电力公司电力科学研究院 | Transformer bushing end screen signal leading-out apparatus |
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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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Free format text: CORRECT: APPLICANT; FROM: THE ELECTRIC POWER RESEARCH INSTITUTE OF ZHEJIANG ELECTRIC POWER CORPORATION TO: ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID ZHEJIANG ELECTRIC POWER COMPANY |
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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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