CN109959848B - Electrical element compression test platform and test method - Google Patents
Electrical element compression test platform and test method Download PDFInfo
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- CN109959848B CN109959848B CN201910188096.1A CN201910188096A CN109959848B CN 109959848 B CN109959848 B CN 109959848B CN 201910188096 A CN201910188096 A CN 201910188096A CN 109959848 B CN109959848 B CN 109959848B
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- 238000012669 compression test Methods 0.000 title claims abstract description 21
- 238000010998 test method Methods 0.000 title description 6
- 238000012360 testing method Methods 0.000 claims abstract description 57
- 239000000725 suspension Substances 0.000 claims description 31
- 238000000034 method Methods 0.000 claims description 14
- 230000007246 mechanism Effects 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 24
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract description 5
- 239000004020 conductor Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
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- 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
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- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The utility model provides an electric elements compression test platform, includes the frame, and the frame includes horizontal stand and vertical support, and the tip of horizontal stand is fixed with the end connection of vertical support, installs between the vertical support and hangs the pole, hangs and has seted up the spout on the pole, is provided with a plurality of slider in the spout, be fixed with the installation pole on the slider, the one end that the slider was kept away from to the installation pole is fixed and is waited to detect the component. Through using this kind of electrical component compression test platform, avoided the safety risk of buildding interim support in the past, the arrester, contact box and female sheathed tube installation of arranging and dismantle more convenient and fast, and can install a plurality of arresters simultaneously on the test platform, contact box and female sleeve pipe of arranging, the efficiency of the test is improved, and the rigidity of frame in the experimentation, so guaranteed the installation standard of experimental lead wire, the potential safety hazard can not appear, the inside field intensity of equipment under test is even, ensure that the test result is accurate reliable.
Description
Technical Field
The invention belongs to the technical field of electrical equipment, and particularly relates to an electrical element compression test platform and a test method.
Background
The lightning arrester mainly has the advantages that various electrical equipment of an electric power system is protected from overvoltage impact, when the lightning arrester is subjected to direct-current withstand voltage and leakage current tests, because the bottom of the lightning arrester is of a stud structure, if the lightning arrester is horizontally placed for testing, the conductor end of the lightning arrester is close to the ground, and the distance between the conductor end of the lightning arrester and the ground is insufficient, the testing instrument is damaged, if the lightning arrester is vertically placed for testing, a tester needs to adopt a temporary object to support the lightning arrester to complete the testing, and the testing is very inconvenient; contact box wide application in various handcart-type cubical switchboard, the primary action is insulating isolation and hookup transition, 10KA contact box that the company commonly used is 630A, 1200A, 1600A series products, when carrying out power frequency withstand voltage test to the contact box, need build interim support and can accomplish fixed and experimental work of getting of taking of lead wire of contact box, also very inconvenient, when testing female sleeve pipe of arranging, in order to obtain better even electric field, need arrange the lead wire at female sleeve pipe positive center of arranging, it takes time to take a lot of work, the interim support of building does not have special fixing device, it is dangerous to have to empty, and because interim support's dielectric strength is not enough, often can cause the influence to the test result.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art, provides an electric element compression test platform and a test method, and aims to ensure the safety of a test environment and the correctness of a test result and improve the test efficiency.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides an electric elements compression test platform, includes the frame, the frame includes horizontal stand and vertical support, the tip of horizontal stand is fixed with the end connection of vertical support, install between the vertical support and hang the pole, hang and seted up the spout on the pole, be provided with a plurality of slider in the spout, be fixed with the installation pole on the slider, the one end that the slider was kept away from to the installation pole is fixed and is waited to detect the component.
The installation hangs the relative one side of two vertical supports of pole and has all seted up the mounting groove, hang the both ends of pole and install in the mounting groove.
First threaded holes are formed in the two ends of the mounting groove, and the two ends of the suspension rod are fixed with the vertical support through first screws.
The upper surface of the sliding block is provided with a second threaded hole, and the sliding block and the suspension rod are fixed through a second screw.
The test device is characterized in that a third threaded hole is formed in the element to be tested, one end, far away from the sliding block, of the mounting rod is in threaded connection with the element to be tested, a fourth threaded hole is formed in the sliding block, the other end of the mounting rod is in threaded connection with the sliding block, and the thread directions of the third threaded hole and the fourth threaded hole are opposite.
A plurality of reinforcing ribs parallel to the vertical support are arranged between the horizontal supports, and universal wheels are arranged at four corners of the frame.
The frame is provided with fixed stabilizer blade on the horizontal stand that is located the below, fixed stabilizer blade includes fixed disk and lead screw elevating system, the lower extreme at lead screw elevating system is fixed to the fixed disk, the lower surface of fixed disk is provided with a plurality of archs.
The lightning arrester installation structure is characterized in that a lightning arrester installation hole is formed in the horizontal support above the frame, and a level meter is arranged in the middle of the horizontal support above the frame.
The fixed support leg is connected with a grounding wire, and a leakage ammeter interface is arranged on the grounding wire.
An electric element compression test method comprises the following steps:
1) adjusting the height of the suspension rod according to the size of the element to be detected, and fixing the height of the suspension rod by screwing a first screw;
2) adjusting the distance between the sliding blocks, and fixing the distance between the sliding blocks by screwing a second screw;
3) screwing a third threaded hole in the element to be detected into the end part of the mounting rod, and screwing the other end of the mounting rod into a second threaded hole in the sliding block;
4) and the screw rod lifting mechanism is adjusted to enable the fixed disc to be in contact with the ground, and the height of each side is ensured to be the same by combining the level gauge in the height adjusting process.
5) A leakage ammeter is connected to the grounding wire;
6) fixing the lightning arrester on the lightning arrester mounting hole, applying direct current voltage to the lightning arrester, and testing the performance of the lightning arrester;
7) and applying alternating voltage to the elements to be detected which are arranged on the mounting rod respectively to test the performance of each electrical element.
An electric element compression test platform and a test method have the advantages that: the efficiency of the test is improved, make the test process safe and reliable, avoided putting up the temporary stand in the past to the arrester, the contact box, the safety risk when female row sleeve pipe is experimental, the arrester is connected fast and stable with being connected of installing the pole with female row sleeve pipe and contact box with the frame, equally, dismantle also convenient and fast more, easily take to the transformer test scene, the contact box, female sheathed tube test lead installation of arranging is convenient, the standard, the inside field intensity of equipment under test is even, the reliability of test result has been guaranteed.
Drawings
The specification includes the following figures, each of which is presented as:
FIG. 1 is a schematic view of an overall structure of a compression test platform for electrical components;
FIG. 2 is an enlarged schematic view at A;
FIG. 3 is an enlarged schematic view at B;
FIG. 4 is a schematic view of the slide block and the slide groove;
FIG. 5 is a schematic structural view of a fixing plate;
FIG. 6 is a schematic view of the construction of the mounting bar;
fig. 7 is an enlarged schematic view at C.
The reference numbers in the figures are:
1. a universal wheel;
2. a frame; 21. a vertical support; 22. a horizontal support;
3. a fixed leg; 31. fixing the disc; 32. a screw rod lifting mechanism;
4. a level gauge; 5. a lightning arrester mounting hole; 6. mounting a rod; 7. a ground line; 8. a first screw; 9. a protrusion; 10. a second screw; 11. a suspension rod; 12. a chute; 13. a slider; 14. mounting grooves; 15. and (5) reinforcing ribs.
Detailed Description
The following detailed description of the embodiments of the present invention will be provided to facilitate better understanding of the technical solutions by the related art through the description of the embodiments with reference to the accompanying drawings.
As shown in fig. 1 and 2, the electrical component compression test platform comprises a vehicle frame 2, wherein the vehicle frame 2 comprises a horizontal support 22 and a vertical support 21, the end portion of the horizontal support 22 is fixedly connected with the end portion of the vertical support 21, a suspension rod 11 is installed between the vertical supports 21, a sliding groove 12 is formed in the suspension rod 11, a plurality of sliding blocks 13 are arranged in the sliding groove 12, a mounting rod 6 is fixed on each sliding block 13, and an element to be detected is fixed at one end, far away from the sliding block 13, of the mounting rod 6.
The frame 2 comprises eight horizontal supports 22 and four vertical supports 21, the eight horizontal supports 22 and the four vertical supports 21 form a rectangular frame, the suspension rod 11 is installed between two vertical supports 21, the suspension rod 11 is provided with a sliding groove 12, a sliding block 13 arranged in the sliding groove 12 can slide in the sliding groove 12, the sliding block 13 is fixed with one end of the installation rod 6, the other end of the installation rod 6 is fixed with an element to be detected, then the electrical element can be tested by connecting test leads, generally, one element to be detected needs two installation rods 6 to be fixed, the element is firmly installed, different numbers of installation rods 6 can be arranged according to test requirements, therefore, a plurality of elements to be detected can be installed simultaneously, the test efficiency is improved, and the frame 2 is a rectangular frame, has strong stability and can not tilt in the test process, because test platform is fixed, the test lead wire arranges the standard, can not take place winding scheduling problem, and this test platform's dielectric strength is better, and is less to the influence of experimental result.
It is noted that electrical components commonly used by companies include lightning arresters, contact boxes of switch cabinets and busbar bushings, but here we refer to the components to be detected as contact boxes and busbar bushings.
As shown in fig. 1 and 3, mounting grooves 14 are formed in opposite sides of two vertical supports 21 for mounting the suspension rod 11, two ends of the suspension rod 11 are mounted in the mounting grooves 14, first threaded holes are formed in two ends of each mounting groove 14, and two ends of the suspension rod 11 are fixed to the vertical supports 21 through first screws 8.
The two ends of the suspension rod 11 can move up and down in the mounting groove 14, the design is designed to be suitable for elements to be detected with different sizes, due to the fact that the sizes of a contact box and a busbar sleeve commonly used by companies are different, the practicability is improved through the design, if the size of the element to be detected is large, the suspension rod 11 is adjusted to be at a high position to guarantee a proper ground clearance, correspondingly, if the size of the element to be detected is small, the suspension rod 11 is adjusted to be at a low position, first threaded holes are formed in the two ends of the suspension rod 11, after the suspension rod 11 is adjusted to be at a proper height, the first screw 8 is screwed into the first threaded hole, the position of the suspension rod 11 is fixed after screwing, the fixing mode is simple in structure, faults are not prone to occurring, and the structure is convenient to operate.
As shown in fig. 4, a second threaded hole is formed in the upper surface of the slider 13, and the slider 13 and the suspension rod 11 are fixed by a second screw 10.
The distance between the sliding blocks 13 is adjusted according to the size of the element to be detected, then the second screw 10 is screwed into the second threaded hole, the second screw 10 is screwed, the position of the sliding block 13 in the sliding groove 12 is fixed, and then the mounting rod 6 which is already fixed with the element to be detected is screwed into the second threaded hole.
As shown in fig. 1 and 6, a third threaded hole is formed in the element to be tested, one end, far away from the slide block 13, of the mounting rod 6 is in threaded connection with the element to be tested, a fourth threaded hole is formed in the slide block 13, the other end of the mounting rod 6 is in threaded connection with the slide block 13, and the thread directions of the third threaded hole and the fourth threaded hole are opposite.
Originally, just have the mounting hole on contact box and female sleeve pipe of arranging, when testing contact box and female sleeve pipe of arranging, can utilize the mounting hole to fix ingeniously, the mounting hole is named as the third screw hole here, the external screw thread is all seted up at the both ends of installation pole 6, the opposite direction of both ends external screw thread, because the both ends of installation pole 6 screw in respectively in third screw hole and the fourth screw hole, so the screw thread direction of corresponding third screw hole and fourth screw hole should also be opposite, it generally has four mounting holes on the component to treat, in order to guarantee fixed firm and convenient operation, we utilize two mounting holes wherein, so every component to treat is fixed by two installation poles 6, because the screw thread opposite direction of third screw hole and fourth screw hole, so two installation poles 6 can install simultaneously.
As shown in FIG. 1, a plurality of reinforcing ribs 15 parallel to the vertical brackets 21 are arranged between the horizontal brackets 22.
After the elements to be detected are fixed on the mounting rod 6, the frame 2 can support certain weight, the larger the size of the elements to be detected is, the larger the number of the elements to be detected is, the larger the weight borne by the frame 2 is, and in order to ensure the stability of the frame 2 and prevent the frame 2 from toppling over, a plurality of reinforcing ribs 15 parallel to the vertical support 21 are arranged between the upper horizontal support 22 and the lower horizontal support 22, and the arrangement of the reinforcing ribs 15 improves the test safety.
As shown in fig. 1, universal wheels 1 are provided at four corners of a vehicle body frame 2.
The universal wheels 1 are arranged to facilitate the movement of the frame 2, so that the test platform has portability, is convenient to bring to a test site for use, is also convenient to store in a team storehouse, and improves the practicability of the test platform.
As shown in fig. 1 and 5, the horizontal bracket 22 of the frame 2 below is provided with a fixing leg 3, the fixing leg 3 includes a fixing plate 31 and a screw rod lifting mechanism 32, the fixing plate 31 is fixed at the lower end of the screw rod lifting mechanism 32, and the lower surface of the fixing plate 31 is provided with a plurality of protrusions 9.
After the frame 2 moves to the appointed position, the fixing support legs 3 are extended out, the fixing disc 31 slowly contacts with the ground through the adjusting screw rod lifting mechanism 32, and the ground in the test environment is not flat, so that the plurality of protrusions 9 are arranged on the lower surface of the fixing disc 31, the protrusions 9 can be inserted into the ground to ensure the level and stability of the frame 2, the fixing effect of the frame 2 is improved, and the movement of the frame 2 in the test process is prevented.
As shown in fig. 1, a lightning arrester mounting hole 5 is provided on the horizontal bracket 22 of the vehicle frame 2 located above, and a level 4 is provided at the middle position of the horizontal bracket 22 of the vehicle frame 2 located above.
The lightning arrester installation hole 5 is formed in the upper horizontal support 22, the lightning arrester installation hole is used for installing the lightning arrester as the name suggests, when the direct-current withstand voltage and leakage current test is carried out on the lightning arrester, a screw rod at the lower end of the lightning arrester is installed in the middle of the lightning arrester installation hole 5, the lightning arrester is fixed at the moment, then the voltage is applied to the lightning arrester, tests of various performances are carried out, in order to guarantee the accuracy of test data, the lightning arrester is guaranteed to have proper distance to the ground by adjusting the height of the fixing support leg 3, and the level 5 is arranged in the middle of the upper horizontal support 22 to guarantee the level of the frame 2.
As shown in fig. 1, the fixed leg 3 is connected to a ground wire 7, and the ground wire 7 is provided with a leak ammeter port.
The grounding wire 7 is a wire directly connected with the ground, the grounding wire 7 is also called a safety return line, when danger occurs, high voltage can be directly transferred to the earth, the safety of workers is ensured, in the test, because a voltage withstand test is carried out, in the process of continuously pressurizing the element to be detected, when the voltage is greater than the voltage withstand limit of the element to be detected, the insulating property of the element to be detected is reduced at the moment, or the element to be detected is not insulated any more, the frame 2 is electrified, in order to ensure the safety, high voltage is transferred to the ground through the grounding wire 7, and when the performance test of the lightning arrester, the contact box and the busbar casing is carried out, the insulating property of each element can be reflected through the index of a leakage ammeter connected to the grounding wire 7.
The utility model provides an electric elements resistance to compression test platform which concrete use does: adjusting the height of a suspension rod 11 according to the size of an element to be detected, fixing the height of the suspension rod 11 by screwing a first screw 8, then adjusting the distance between sliders 13, determining the distance between the sliders 13 according to the size and the number of the element to be detected, then fixing the distance between the sliders 13 by screwing a second screw 10, screwing a third threaded hole on the element to be detected into the end part of a mounting rod 6, screwing the other end of the mounting rod 6 into a second threaded hole on the slider 13, fixing a lightning arrester on a lightning arrester mounting hole 5, adjusting a screw rod lifting mechanism 32 to enable a fixed disc 31 to be in contact with the ground, ensuring the heights of all sides to be the same by combining a level meter 4 in the process of adjusting the height, connecting a leakage current meter on a grounding wire 7, applying direct current voltage to the lightning arrester, testing the performance of the lightning arrester, and completing the test of the lightning arrester, and applying alternating voltage to the elements to be detected which are arranged on the mounting rod 6 respectively, testing the performance of each element to be detected, and completing the test of the elements to be detected, namely the whole using process of the test platform.
An electric element compression test method comprises the following steps:
1) adjusting the height of the suspension rod 11 according to the size of the element to be detected, and fixing the height of the suspension rod 11 by screwing the first screw 8;
2) adjusting the distance between the sliding blocks 13, and fixing the distance between the sliding blocks 13 by screwing the second screw 8;
3) screwing a third threaded hole in the element to be detected into the end part of the mounting rod 6, and screwing the other end of the mounting rod 6 into a second threaded hole in the sliding block 13;
4) and the screw rod lifting mechanism 32 is adjusted to enable the fixed disc 31 to contact the ground, and the height of each side is ensured to be the same by combining the level gauge 4 in the process of adjusting the height.
5) A leakage ammeter is connected to the ground wire 7;
6) fixing the lightning arrester on the lightning arrester mounting hole 5, applying direct current voltage to the lightning arrester, and testing the performance of the lightning arrester;
7) alternating voltage is applied to the elements to be detected mounted on the mounting bar 6, respectively, and the performance of each electrical element is tested.
An electric element compression test platform and a test method have the advantages that: the efficiency of the test is improved, make the test process safe and reliable, avoided putting up the temporary stand in the past to the arrester, the contact box, the safety risk when female row sleeve pipe is experimental, the arrester is with frame 2's installation and female row sleeve pipe and contact box and installation pole 6 be connected fast and stable, equally, dismantle also convenient and fast more, easily take to the transformer test scene, the contact box, female sheathed tube test lead wire installation of arranging is convenient, the norm, the inside field intensity of equipment under test is even, the reliability of test result has been guaranteed.
The invention is described above with reference to the accompanying drawings, it is obvious that the specific implementation of the invention is not limited by the above-mentioned manner, and it is within the scope of the invention to adopt various insubstantial modifications of the inventive concept and solution, or to apply the inventive concept and solution directly to other applications without modification.
Claims (6)
1. The utility model provides an electric elements resistance to compression test platform which characterized in that: the detection device comprises a frame (2), wherein the frame (2) comprises horizontal supports (22) and vertical supports (21), the end parts of the horizontal supports (22) are fixedly connected with the end parts of the vertical supports (21), suspension rods (11) are installed between the vertical supports (21), sliding grooves (12) are formed in the suspension rods (11), a plurality of sliding blocks (13) are arranged in the sliding grooves (12), mounting rods (6) are fixed on the sliding blocks (13), and elements to be detected are fixed at one ends, far away from the sliding blocks (13), of the mounting rods (6);
a third threaded hole is formed in the element to be detected, one end, far away from the sliding block (13), of the mounting rod (6) is connected with the element to be detected through threads, a fourth threaded hole is formed in the sliding block (13), the other end of the mounting rod (6) is connected with the sliding block (13) through threads, and the thread directions of the third threaded hole and the fourth threaded hole are opposite;
a horizontal support (22) of the frame (2) below is provided with a fixed support leg (3), the fixed support leg (3) comprises a fixed disc (31) and a screw rod lifting mechanism (32), the fixed disc (31) is fixed at the lower end of the screw rod lifting mechanism (32), and the lower surface of the fixed disc (31) is provided with a plurality of protrusions (9); a lightning arrester mounting hole (5) is formed in the horizontal support (22) of the frame (2) above the frame, and a level gauge (4) is arranged in the middle of the horizontal support (22) of the frame (2) above the frame;
the fixing support leg (3) is connected with a grounding wire (7), and a leakage ammeter interface is arranged on the grounding wire (7).
2. An electrical component compression test platform as claimed in claim 1, wherein: mounting grooves (14) are formed in the opposite sides of two vertical supports (21) for mounting the suspension rods (11), and two ends of each suspension rod (11) are mounted in the mounting grooves (14).
3. An electrical component compression test platform as claimed in claim 2, wherein: first threaded holes are formed in two ends of the mounting groove (14), and two ends of the suspension rod (11) are fixed with the vertical support (21) through first screws (8).
4. An electrical component compression test platform as claimed in claim 1, wherein: the upper surface of the sliding block (13) is provided with a second threaded hole, and the sliding block (13) and the suspension rod (11) are fixed through a second screw (10).
5. An electrical component compression test platform as claimed in claim 1, wherein: a plurality of reinforcing ribs (15) parallel to the vertical support (21) are arranged between the horizontal supports (22), and universal wheels (1) are arranged at four corners of the frame (2).
6. An electric element compression test method is characterized in that: the method requires the use of an electrical component compression test platform according to any one of claims 1 to 5, comprising the following steps:
1) the height of the suspension rod (11) is adjusted according to the size of the element to be detected, and the height of the suspension rod (11) is fixed by screwing a first screw (8);
2) adjusting the distance between the sliding blocks (13), and fixing the distance between the sliding blocks (13) by screwing the second screw (10);
3) screwing a third threaded hole in the element to be detected into the end part of the mounting rod, and simultaneously screwing the other end of the mounting rod (6) into a second threaded hole in the sliding block (13);
4) the screw rod lifting mechanism (32) is adjusted to enable the fixed disc (31) to be in contact with the ground, and the height of each side is guaranteed to be the same by combining the level meter (4) in the height adjusting process;
5) a leakage ammeter is connected to the grounding wire (7);
6) fixing the lightning arrester on the lightning arrester mounting hole (5), applying direct current voltage to the lightning arrester, and testing the performance of the lightning arrester;
7) alternating voltage is respectively applied to the elements to be detected which are arranged on the mounting rod (6), and the performance of each electrical element is tested.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910188096.1A CN109959848B (en) | 2019-03-13 | 2019-03-13 | Electrical element compression test platform and test method |
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|---|---|---|---|
| CN201910188096.1A CN109959848B (en) | 2019-03-13 | 2019-03-13 | Electrical element compression test platform and test method |
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| CN109959848B true CN109959848B (en) | 2021-07-27 |
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| CN110579673B (en) * | 2019-09-07 | 2021-10-19 | 武汉里得电力科技股份有限公司 | Leakage current measurement and control system and method for insulating bucket arm vehicle |
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| US7633734B2 (en) * | 2006-11-02 | 2009-12-15 | Duca Manufacturing & Consulting, Inc. | AC melt to bushing current detector |
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| CN204789639U (en) * | 2015-06-25 | 2015-11-18 | 国网山东章丘市供电公司 | Lightning arrester test platform |
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| CN109959848A (en) | 2019-07-02 |
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