CN106707112B - Capacitor test device - Google Patents
Capacitor test device Download PDFInfo
- Publication number
- CN106707112B CN106707112B CN201611016716.6A CN201611016716A CN106707112B CN 106707112 B CN106707112 B CN 106707112B CN 201611016716 A CN201611016716 A CN 201611016716A CN 106707112 B CN106707112 B CN 106707112B
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- CN
- China
- Prior art keywords
- conductor
- capacitor
- voltage
- shell
- test device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000003990 capacitor Substances 0.000 title claims abstract description 108
- 238000012360 testing method Methods 0.000 title claims abstract description 69
- 239000004020 conductor Substances 0.000 claims abstract description 124
- 238000007789 sealing Methods 0.000 claims abstract description 50
- 239000012212 insulator Substances 0.000 claims description 30
- 230000007704 transition Effects 0.000 claims description 16
- 210000001503 joint Anatomy 0.000 abstract description 2
- 238000003780 insertion Methods 0.000 description 7
- 230000037431 insertion Effects 0.000 description 7
- 238000009413 insulation Methods 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000002788 crimping Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2688—Measuring quality factor or dielectric loss, e.g. loss angle, or power factor
- G01R27/2694—Measuring dielectric loss, e.g. loss angle, loss factor or power factor
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The invention relates to the field of electrical appliance test devices, in particular to a capacitor test device. The capacitor test device comprises a shell, a bottom sealing seat arranged at the bottom of the shell and a high-voltage lead-in conductor arranged in the shell, wherein a fixing structure used for being fixedly connected with one end of the capacitor is arranged on the bottom sealing seat, a high-voltage connecting conductor used for being electrically connected with the other end of the capacitor is further arranged in the shell, and the high-voltage lead-in conductor is in press fit with the high-voltage connecting conductor or is in plug fit along the upper and lower directions. The capacitor is fixedly supported through the bottom sealing seat, and the high-voltage connecting conductor, the high-voltage introducing conductor and the bottom sealing seat are arranged up and down, so that the butt joint type assembly of the two ends of the test device can be realized, the assembly efficiency is improved, and the problem of low assembly efficiency of the conventional capacitor test device is solved.
Description
Technical Field
The invention relates to the field of electrical appliance test devices, in particular to a capacitor test device.
Background
The high-voltage cylindrical capacitor is commonly used for equalizing and dividing voltage in high-voltage gas insulated electrical appliances, and has simple structure and convenient installation, and is widely applied to SF6 gas insulated metal enclosed environments. At present, in order to guarantee the reliability of a capacitor, the insulation voltage resistance, partial discharge and dielectric loss performance of the capacitor are usually tested by using a capacitor test device, the structure of the current capacitor test device is complex, and the actual use environment working conditions of a high-voltage cylindrical capacitor are lacked, for example, the insulation test device of a capacitor disclosed in Chinese patent with an authorized bulletin number of CN103487733B and a bulletin day of 2016.06.29 comprises a shell for accommodating the capacitor, an upper opening, a lower opening and a voltage-resistant port are formed in the shell, an upper sealing cover is detachably connected to the upper opening, a lower sealing cover is detachably connected to the lower opening, the lower sealing cover is a bottom sealing seat arranged at the bottom of the shell, the upper sealing cover is a top sealing cover, and the upper sealing cover is connected with a high-voltage side metal support through a high-voltage side insulation support. The high-voltage side insulating support and the high-voltage side metal support are both positioned in the shell, the high-voltage side metal support is provided with a protruding portion extending to the pressure-resistant port, the pressure-resistant port is sealed by an insulating partition, the insulating partition is provided with an insertion hole for passing through a high-voltage contact conductor, the high-voltage contact conductor is electrically connected with the high-voltage side metal support, and the high-voltage contact conductor is a high-voltage lead-in conductor. The capacitor test device can test a single capacitor or a whole group of capacitors, but before the capacitor starts to test, the capacitor is required to be fixed on an upper sealing cover through a high-voltage side metal support piece and a high-voltage side insulating support piece, a high-voltage contact conductor is assembled on a shell, then an upper sealing cover provided with the capacitor is assembled on the shell, the end part of a first bulge is abutted against the end part of the high-voltage contact conductor, and finally a wiring terminal at the bottom is connected with the upper sealing cover and the lower sealing cover, so that the capacitor is complex in assembly operation and low in assembly efficiency before the test is completed.
Disclosure of Invention
The invention aims to provide a capacitor test device so as to solve the problem of low assembly efficiency of the conventional capacitor test device.
In order to achieve the above object, a first technical scheme of the capacitor test device of the present invention is as follows: the capacitor test device comprises a shell, a bottom sealing seat arranged at the bottom of the shell and a high-voltage lead-in conductor arranged in the shell, wherein a fixing structure used for being fixedly connected with one end of the capacitor is arranged on the bottom sealing seat, a high-voltage connecting conductor used for being electrically connected with the other end of the capacitor is further arranged in the shell, and the high-voltage lead-in conductor is in press fit with the high-voltage connecting conductor or is in plug fit along the upper and lower directions.
The second technical scheme of the capacitor test device of the invention is as follows: according to the capacitor test device of the first technical scheme of the capacitor test device, the high-voltage connecting conductor comprises a body used for being connected with the capacitor and a conducting rod fixedly connected with the body, one end, far away from the body, of the conducting rod is a conducting rod inserting end, and the high-voltage connecting conductor is in inserting fit with the high-voltage introducing conductor through the conducting rod inserting end.
The third technical scheme of the capacitor test device of the invention is as follows: according to the capacitor test device of the second technical scheme of the capacitor test device, the conducting rod is provided with the conducting rod flange, and the conducting rod is fixedly connected with the body through the conducting rod flange.
The fourth technical scheme of the capacitor test device of the invention is as follows: according to the capacitor test device of any one of the first to third technical schemes of the capacitor test device, the top of the shell is provided with the basin-shaped insulator, the basin-shaped insulator forms a top sealing cover of the shell, the basin-shaped insulator is provided with an insulator conductor, the high-voltage lead-in conductor comprises the insulator conductor and a transition connection conductor connected with the insulator conductor, the transition connection conductor is positioned in the shell, and the transition connection conductor is provided with a splicing structure for splicing and matching with the high-voltage connection conductor or a crimping structure for crimping and matching with the high-voltage connection conductor.
The fifth technical scheme of the capacitor test device of the invention is as follows: according to the capacitor test device of the fourth technical scheme of the capacitor test device, the insulator conductor is also connected with a high-voltage lead conductor, and the high-voltage lead conductor is arranged outside the shell.
The sixth technical scheme of the capacitor test device of the invention is as follows: according to the capacitor test device of the fourth technical scheme of the capacitor test device, the transitional connecting conductor is provided with a plugging structure for being plugged and matched with the high-voltage connecting conductor, and the plugging structure is a conductor plugging hole arranged on the transitional connecting conductor.
The seventh technical scheme of the capacitor test device of the invention is as follows: according to the capacitor test device of any one of the first to third technical aspects of the capacitor test device of the present invention, the casing is provided with a casing flange connected with the bottom sealing seat.
The eighth technical scheme of the capacitor test device of the invention is as follows: according to the capacitor test device of any one of the first to third aspects of the capacitor test device of the present invention, the high-voltage connection conductor is provided with a shielding equalizing cover at an end portion for connection with the capacitor.
The beneficial effects of the invention are as follows: compared with the prior capacitor test device, the capacitor test device of the invention is assembled by fixedly assembling the capacitor on the bottom sealing seat, fixing the high-voltage connecting conductor on the capacitor, assembling the bottom sealing seat with the capacitor on the shell, butting the high-voltage connecting conductor with the high-voltage connecting conductor, and fixing the shell with the bottom sealing seat. The capacitor is fixedly supported through the bottom sealing seat, and the high-voltage connecting conductor, the high-voltage introducing conductor and the bottom sealing seat are arranged up and down, so that the butt joint type assembly of the two ends of the test device can be realized, the assembly efficiency is improved, and the problem of low assembly efficiency of the conventional capacitor test device is solved.
Drawings
FIG. 1 is a schematic view showing a structure of a capacitor test apparatus according to an embodiment 1 of the present invention;
fig. 2 is a schematic structural view of a columnar capacitor assembled in embodiment 1 of the capacitor test apparatus of the present invention;
fig. 3 is a bottom view of fig. 2.
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
In a specific embodiment 1 of the capacitor test device of the present invention, as shown in fig. 1, the capacitor test device comprises a cylindrical shell 1, a bottom sealing seat 2 and a basin-shaped insulator 3 are arranged on the shell 1, the basin-shaped insulator 3 forms a top sealing cover of the shell, the basin-shaped insulator 3 comprises an insulator conductor 51, the capacitor test device further comprises a high-voltage introducing conductor 5, the high-voltage introducing conductor comprises the insulator conductor 51 and a transition connecting conductor 52 connected with the insulator conductor 51, and the transition connecting conductor 52 is positioned inside the shell 1.
The bottom sealing seat 2 is provided with a bolt fixing hole for fixing the columnar capacitor 7, and the bolt fixing hole forms a fixing structure arranged on the bottom sealing seat. A high-voltage connection conductor 4 for connection with a capacitor 7 is provided in the housing 1, and the high-voltage connection conductor 4, the high-voltage introduction conductor 5 and the bottom sealing seat 2 are arranged up and down. The high-voltage connection conductor 4 is in plug-in fit with the high-voltage introduction conductor 5 along the up-down direction, the transition connection conductor 52 is provided with a conductor plug-in hole 521, and the conductor plug-in hole 521 forms a plug-in structure for plug-in fit with the high-voltage connection conductor. As shown in fig. 2 and 3, the columnar capacitor 7 in the present embodiment includes a stacked capacitor 71 and shields 72 provided at both ends of the stacked capacitor 71, the shields being provided with mounting bolt holes 73.
Through directly fixing the condenser on the bottom seal seat, by bottom seal seat supporting condenser, arrange from top to bottom simultaneously high voltage connection conductor, high voltage introduction conductor and bottom seal seat, simplified the inside structure of casing 1, can realize test device both ends and cut straightly the assembly, improved assembly efficiency. In addition, the capacitor is supported by the bottom sealing seat, so that the fixing strength of the capacitor can be improved. The high-voltage lead-in conductor 5 extends in the up-down direction, and the high-voltage connection conductor 4 is in plug-in fit with the high-voltage lead-in conductor 5 in the up-down direction. The high-voltage connecting conductor 4 and the high-voltage introducing conductor 5 which are in plug-in fit not only improve the assembly efficiency, but also can adapt to certain assembly errors.
The bottom sealing seat 2 of the present embodiment is located at the bottom of the housing 1, and the basin-type insulator 3 includes an insulating portion and an insulator conductor 51 located at the center of the insulating portion. The transition connection conductor is detachably and fixedly connected with the insulator conductor 51, so that the installation error can be adjusted, and the high-voltage connection conductor 4 can be conveniently detached. The insulator conductor 51 is connected with a high-voltage lead conductor 53, the transition conductor 52 and the high-voltage lead conductor 53 are detachably connected with the insulator conductor 51, the transition conductor 52 is positioned in the shell 1, and the high-voltage lead conductor 53 is positioned outside the shell 1. The insulator conductor 51, the transition conductor 52, and the high voltage lead conductor 53 are arranged one above the other.
In this embodiment, the high-voltage connection conductor 4 includes a body 41 fixedly connected to the high-voltage side of the capacitor and a conductive rod 42 fixedly connected to the body 41, a conductive rod flange 421 is disposed on the conductive rod 42, the conductive rod 42 is fixedly connected to the body 41 through the conductive rod flange 421, in this embodiment, the conductive rod 42 and the body 41 are fixed together through screws, and in other embodiments, the conductive rod and the body may be integrally structured or fixed together through welding. The end part of the body 41 connected with the capacitor is provided with a shielding voltage equalizing cover 43, and the shielding voltage equalizing cover 43 can shield an electric field at the end part of the high-voltage connecting conductor 4 and control partial discharge of the test device to meet detection requirements.
The conductor insertion hole 521 is provided with a spring contact finger, one end of the conductive rod 42 away from the body 41 is a conductive rod insertion end, and the conductive rod insertion end is provided with a conductive rod insertion part which is in insertion fit with the conductor insertion hole 521.
The shell 1 is provided with an inflation and deflation valve 6, inflation and deflation can be performed, and the inflation and deflation valve 6 is provided with a barometer.
The bottom of the shell 1 is provided with a shell flange 11 fixedly connected with the bottom sealing seat 2, and the bottom sealing seat 2 is fixedly connected with the shell flange 11 through bolts. The bottom sealing seat 2 is connected with a grounding lead wire which is connected with the grounding end of each capacitor. In this embodiment, one or more columnar capacitors may be mounted on the bottom seal holder 2. The bottom sealing seat 2 is provided with screw fixing holes which form a fixing structure for fixing the capacitor. The bottom sealing seat 2 is made of conductive metal materials, a mounting bolt hole is formed in a shielding piece of the capacitor, when the capacitor is tested by the capacitor test device, a bolt penetrates through a bolt fixing hole in the bottom sealing seat and is screwed into the mounting bolt hole of the capacitor, and the bottom sealing seat is electrically connected with the capacitor through the bolt. The structure at both ends of the capacitor is the same, and one end connected with the high-voltage connecting conductor is also provided with a mounting bolt hole, and the high-voltage connecting conductor is electrically connected with the capacitor through a bolt.
In this embodiment, the high voltage lead-in conductor 5 is electrically connected to not only the high voltage power supply, but also test signal lines for detecting the dielectric breakdown voltage, partial discharge, and dielectric loss properties of the columnar capacitor. In this embodiment, the test signal line is a signal high-voltage wire, and the test device for testing the insulation voltage resistance, partial discharge and dielectric loss performance of the columnar capacitor is electrically connected to the high-voltage lead-in conductor 5 through the signal high-voltage wire. The information of the insulation voltage resistance, partial discharge and dielectric loss performance of the capacitor to be tested can be fed back to the testing device through the signal high-voltage wire, so that the insulation voltage resistance, partial discharge and dielectric loss performance of the capacitor can be tested.
Before the test of the capacitor test device, the columnar capacitor to be tested is directly fixed on the bottom sealing seat 2, then the assembled capacitor, the bottom sealing seat 2 and the high-voltage connecting conductor 4 are assembled on the shell 1, then the basin-type insulator 3 with the high-voltage introducing conductor 5 is fixed on the shell 1, and the conducting rod 42 of the high-voltage connecting conductor is inserted into the conductor inserting hole 521, so that the assembly work before the test is completed.
Specific example 2 of the capacitor test apparatus of the present invention differs from the above-described example only in that: the end, far away from the body, of the conducting rod is provided with a connecting spring, and the transitional connecting conductor is in press fit with the conducting rod through the connecting spring.
In other embodiments of the present invention, the high voltage connection conductor and the high voltage introduction conductor may be connected by a flexible conductive tape; the top sealing cover is not formed by a basin-type insulator, and can be a top sealing plate at the moment, a high-voltage wall bushing is arranged on the top sealing plate, and the top sealing plate and the high-voltage wall bushing form the top sealing cover at the moment; the lead conductor can also be connected with a capacitor inside the shell through a wall bushing; the transition connection conductor and the insulator conductor can be of an integrated structure; the basin-type insulator can be arranged on one side of the shell, and the matching mode of the high-voltage lead-in conductor and the high-voltage connecting conductor can refer to the connecting mode in the document cited in the background art at the moment, and the difference is that the high-voltage connecting conductor is only fixedly connected with the capacitor, and the high-voltage connecting conductor and the high-voltage lead-in conductor are in press fit along the left-right direction at the moment; the high voltage lead conductor may also be part of a high voltage lead conductor.
Claims (7)
1. The utility model provides a capacitor test device, includes the casing, sets up the bottom seal seat in the casing bottom and sets up the high voltage introduction conductor in the casing, its characterized in that: the bottom sealing seat is connected with a grounding outgoing line, the grounding outgoing line is connected with the grounding end of each capacitor, a fixing structure used for being fixedly connected with one end of each capacitor is arranged on the bottom sealing seat, the fixing structure can realize the electric connection between the capacitor and the bottom sealing seat, a high-voltage connecting conductor used for being electrically connected with the other end of each capacitor is also arranged in the shell, and the high-voltage introducing conductor and the high-voltage connecting conductor are in plug-in fit along the up-down direction; the high-voltage connecting conductor comprises a body connected with the capacitor and a conducting rod connected with the body, and a shielding equalizing cover is arranged at the end part of the body connected with the capacitor.
2. The capacitor testing device of claim 1, wherein: the end of the conducting rod, which is far away from the body, is a conducting rod inserting end, and the high-voltage connecting conductor is in inserting fit with the high-voltage introducing conductor through the conducting rod inserting end.
3. The capacitor testing device of claim 2, wherein: the conducting rod is provided with a conducting rod flange, and the conducting rod is fixedly connected with the body through the conducting rod flange.
4. A capacitor test device according to any one of claims 1-3, wherein: the top of the shell is provided with a basin-type insulator, the basin-type insulator forms a top sealing cover of the shell, the basin-type insulator is provided with an insulator conductor, the high-voltage lead-in conductor comprises the insulator conductor and a transition connection conductor connected with the insulator conductor, the transition connection conductor is positioned in the shell, and a plug-in structure for being in plug-in fit with the high-voltage connection conductor is arranged on the transition connection conductor.
5. The capacitor testing device of claim 4, wherein: the insulator conductor is also connected with a high-voltage lead conductor which is arranged outside the shell.
6. The capacitor testing device of claim 4, wherein: the transition connection conductor is provided with a plug structure for being matched with the high-voltage connection conductor in a plug manner, and the plug structure is a conductor plug hole arranged on the transition connection conductor.
7. A capacitor test device according to any one of claims 1-3, wherein: the shell is provided with a shell flange connected with the bottom sealing seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611016716.6A CN106707112B (en) | 2016-11-18 | 2016-11-18 | Capacitor test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611016716.6A CN106707112B (en) | 2016-11-18 | 2016-11-18 | Capacitor test device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106707112A CN106707112A (en) | 2017-05-24 |
| CN106707112B true CN106707112B (en) | 2024-03-15 |
Family
ID=58940541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611016716.6A Active CN106707112B (en) | 2016-11-18 | 2016-11-18 | Capacitor test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106707112B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1186658A (en) * | 1997-09-02 | 1999-03-30 | Mitsubishi Electric Corp | Capacitor bushing |
| CN201717082U (en) * | 2010-06-07 | 2011-01-19 | 中国西电电气股份有限公司 | Intelligent online monitoring oil-impregnated paper condenser type transformer bushing |
| CN202583258U (en) * | 2012-05-14 | 2012-12-05 | 杭州银湖电气设备有限公司 | Capacitor aging experiment table |
| CN103105568A (en) * | 2013-01-16 | 2013-05-15 | 重庆市电力公司电力科学研究院 | Transformer paper oil insulation experiment device integrated with electric heating combination ageing and partial discharge |
| CN103487733A (en) * | 2013-09-26 | 2014-01-01 | 河南平高东芝高压开关有限公司 | Insulation test device of capacitor |
| CN103954847A (en) * | 2014-05-12 | 2014-07-30 | 国家电网公司 | Testing device for oiled paper compound insulation frequency domain dielectric spectrum and conductivity test |
| CN104360241A (en) * | 2014-09-26 | 2015-02-18 | 国家电网公司 | System and method for impulse withstanding performance test of gas-insulated impulse voltage generator unit |
| CN106093723A (en) * | 2016-06-16 | 2016-11-09 | 平高集团有限公司 | DC Insulator insulation test device and method |
| CN206281873U (en) * | 2016-11-18 | 2017-06-27 | 国家电网公司 | Gas-insulated locking device for detecting high-voltage capacitor |
-
2016
- 2016-11-18 CN CN201611016716.6A patent/CN106707112B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1186658A (en) * | 1997-09-02 | 1999-03-30 | Mitsubishi Electric Corp | Capacitor bushing |
| CN201717082U (en) * | 2010-06-07 | 2011-01-19 | 中国西电电气股份有限公司 | Intelligent online monitoring oil-impregnated paper condenser type transformer bushing |
| CN202583258U (en) * | 2012-05-14 | 2012-12-05 | 杭州银湖电气设备有限公司 | Capacitor aging experiment table |
| CN103105568A (en) * | 2013-01-16 | 2013-05-15 | 重庆市电力公司电力科学研究院 | Transformer paper oil insulation experiment device integrated with electric heating combination ageing and partial discharge |
| CN103487733A (en) * | 2013-09-26 | 2014-01-01 | 河南平高东芝高压开关有限公司 | Insulation test device of capacitor |
| CN103954847A (en) * | 2014-05-12 | 2014-07-30 | 国家电网公司 | Testing device for oiled paper compound insulation frequency domain dielectric spectrum and conductivity test |
| CN104360241A (en) * | 2014-09-26 | 2015-02-18 | 国家电网公司 | System and method for impulse withstanding performance test of gas-insulated impulse voltage generator unit |
| CN106093723A (en) * | 2016-06-16 | 2016-11-09 | 平高集团有限公司 | DC Insulator insulation test device and method |
| CN206281873U (en) * | 2016-11-18 | 2017-06-27 | 国家电网公司 | Gas-insulated locking device for detecting high-voltage capacitor |
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| Publication number | Publication date |
|---|---|
| CN106707112A (en) | 2017-05-24 |
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| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 100031 No. 86 West Chang'an Avenue, Beijing, Xicheng District Applicant after: STATE GRID CORPORATION OF CHINA Applicant after: XJ Group Corp. Address before: 100031 No. 86 West Chang'an Avenue, Beijing, Xicheng District Applicant before: State Grid Corporation of China Applicant before: XJ Group Corp. |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20230831 Address after: 100031 No. 86 West Chang'an Avenue, Beijing, Xicheng District Applicant after: STATE GRID CORPORATION OF CHINA Applicant after: XJ Group Corp. Applicant after: XJ ELECTRIC Co.,Ltd. Address before: 100031 No. 86 West Chang'an Avenue, Beijing, Xicheng District Applicant before: STATE GRID CORPORATION OF CHINA Applicant before: XJ Group Corp. |
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