CN117169774A - Auxiliary tool for testing voltage transformation neutral point lightning arrester - Google Patents
Auxiliary tool for testing voltage transformation neutral point lightning arrester Download PDFInfo
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- CN117169774A CN117169774A CN202310981584.4A CN202310981584A CN117169774A CN 117169774 A CN117169774 A CN 117169774A CN 202310981584 A CN202310981584 A CN 202310981584A CN 117169774 A CN117169774 A CN 117169774A
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- neutral point
- opening
- insulating sleeve
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- 238000012360 testing method Methods 0.000 title claims abstract description 38
- 230000007935 neutral effect Effects 0.000 title claims abstract description 36
- 230000009466 transformation Effects 0.000 title claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 10
- 229920001971 elastomer Polymers 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 9
- 230000015556 catabolic process Effects 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 8
- 230000005684 electric field Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 6
- 239000003822 epoxy resin Substances 0.000 description 3
- 239000012634 fragment Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
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Abstract
The application belongs to the technical field of high-voltage test auxiliary tools, and discloses a test auxiliary tool for a voltage transformation neutral point arrester, which comprises an insulating sleeve, a conical clamping sleeve and an operating rod, wherein one end of the insulating sleeve is a sealed end, and the other end of the insulating sleeve is an open end; the large-diameter end of the conical clamping sleeve is communicated with the opening end, the opening of the small-diameter end is an electrode rod clamping opening, and the electrode rod clamping opening is arranged towards the sealing end; one end of the operating rod is detachably connected with the insulating sleeve. Because the insulating effect of the insulating sleeve changes the tip charge of the gap tip in the direct current leakage test of the arrester, the electric field distribution of the discharge gap is changed, and the breakdown voltage of the discharge gap is increased to be higher than the test voltage under the condition of unchanged distance, so that the discharge gap is prevented from being broken down in advance, therefore, the electrode rod at one side of the neutral point discharge gap and a connecting sheet and equipment connected with the electrode rod are not required to be removed, the field dismantling work is omitted, the high falling risk is reduced, the operation difficulty is reduced, the operation procedure is simplified, and the operation efficiency is improved.
Description
Technical Field
The application relates to the technical field of high-voltage test auxiliary tools, in particular to a test auxiliary tool for a voltage transformation neutral point arrester.
Background
A transformer neutral point arrester is a device for protecting the neutral point of a transformer in an electrical power system from electrical overvoltage fluctuations. In power systems, the neutral point of the transformer is typically grounded to balance the voltage in the circuit. However, when the system is subjected to overvoltage surges, current may be generated through the neutral point, possibly causing damage to the electrical equipment. The transformer neutral point arrestor protects the neutral point from overvoltage by leading the overvoltage to ground. It is typically made of metal oxide piezoresistors with low voltage response characteristics that release energy quickly and direct the overvoltage to ground. This is important to protect transformers and other related equipment from over-voltages.
At present, in the direct current 1mA leakage test of the 220kV main transformer neutral point lightning arrester, in order to avoid the prior breakdown of a discharge gap, an electrode rod at one side of the neutral point discharge gap or a connecting sheet and equipment connected with the electrode rod are required to be removed. The problems existing in the current stage in operation are as follows:
1. the discharge gap is narrow in space at the position, so that the site dismantling work is not easy to carry out, and a great high falling risk exists;
2. the field operation space is limited, and the field operation difficulty is high;
3. the distance between the two electrodes needs to be subjected to breakdown test according to regulations to recover the discharge gap, so that the operation procedure is complicated and the efficiency is low.
Therefore, there is a need for a test aid for a voltage transformation neutral point arrester to solve the above problems.
Disclosure of Invention
The application provides an auxiliary tool for testing a voltage transformation neutral point arrester, which can omit the field dismantling work, reduce the high falling risk, reduce the operation difficulty, simplify the operation procedure and improve the operation efficiency.
The embodiment of the application provides an auxiliary tool for testing a voltage transformation neutral point lightning arrester, which comprises the following components:
one end of the insulating sleeve is a sealing end, and the other end of the insulating sleeve is an opening end;
the large-diameter end of the conical clamping sleeve is communicated with the opening end, the opening of the small-diameter end is an electrode rod clamping opening, and the electrode rod clamping opening is arranged towards the sealing end;
and one end of the operating rod is detachably connected with the insulating sleeve.
In some embodiments, the conical clamping sleeve comprises a plurality of clamping elastic pieces, one end of each clamping elastic piece is connected to the opening end, the other end of each clamping elastic piece is located in the insulating sleeve and is obliquely arranged towards the central shaft of the insulating sleeve, the plurality of clamping elastic pieces are sequentially arranged at intervals along the inner periphery of the insulating sleeve, and the other ends of the clamping elastic pieces encircle the electrode rod clamping opening.
In some embodiments, the tapered clamping sleeve is made of a soft gel material.
In some embodiments, the insulating sleeve comprises an inner sleeve and an outer sleeve sleeved outside the inner sleeve, and the conical clamping sleeve is connected with the inner sleeve.
In some embodiments, the tapered clamping sleeve and the inner sleeve are integrally formed.
In some embodiments, the outer wall of the insulating sleeve is provided with a connecting portion, and one end of the operating rod is provided with a connector detachably connected with the connecting portion.
In some embodiments, the connecting portion comprises a clamping sleeve, one end of the clamping sleeve is connected to the outer wall of the insulating sleeve, a penetrating opening communicated with the inner cavity of the clamping sleeve is formed in the end portion of the other end of the clamping sleeve, a clamping opening is formed in the penetrating opening of the clamping sleeve, a clamping connector is connected to one end of the operating rod in an included angle mode, one end of the operating rod penetrates into the clamping sleeve, and the clamping connector is clamped to the clamping opening.
In some embodiments, the snap fit is a trumpet-like structure.
In some embodiments, an opening of the clamping notch is provided with a leading-in inclined plane.
In some embodiments, the outer wall of the outer sleeve includes a concave arcuate surface extending along the circumference of the outer sleeve.
The beneficial effects of the application are that
The embodiment provides a voltage transformation neutral point arrester test appurtenance, it includes insulating cover, toper clamping sleeve and action bars, and the one end of insulating cover is sealed end, and the other end is the open end, and the big footpath end of toper clamping sleeve communicates in the open end, and the opening of path end is the electrode rod clamping mouth, and the electrode rod clamping mouth sets up towards sealed end, and the one end of action bars can be dismantled and connect in insulating cover. When the lightning arrester direct current leakage test is carried out, an operator stands on the ground to connect one end of an operating rod with an insulating sleeve, holds the other end of the operating rod, moves the insulating sleeve to a neutral point of the lightning arrester, and sleeves the insulating sleeve on an electrode rod through an opening of a large-diameter end of a conical clamping sleeve until the electrode rod is clamped by an electrode rod clamping opening, then, the operating rod is separated from the insulating sleeve, and the tip charge of a gap tip in the lightning arrester direct current leakage test is changed due to the insulating effect of the insulating sleeve, so that the electric field distribution of a discharge gap is changed, the breakdown voltage of the discharge gap is increased to be higher than the test voltage under the condition that the distance is unchanged, and then, the electrode rod on one side of the discharge gap of a neutral point and connecting sheets and equipment connected with the electrode rod are not required to be removed, so that the work of site dismantling is omitted, the high falling risk is reduced, the operation difficulty is reduced, the operation procedure is simplified, and the operation efficiency is improved.
The big footpath end of toper clamping sleeve communicates in the open end of insulating sleeve, and the opening of path end sets up towards the sealed end of insulating sleeve, therefore, at the in-process of insulating sleeve cover to the electrode rod, the electrode rod penetrates the toper through the opening of the big footpath end of toper clamping sleeve earlier and presss from both sides tightly the cover, then penetrates the electrode rod and presss from both sides tight mouthful, and the in-process that whole cup joints, the toper presss from both sides tightly the cover and has played the guide effect, cup joints the back in place with the electrode rod and presss from both sides tightly the electrode rod with the tight mouthful of electrode rod, has realized the insulating isolation to the electrode rod to cup jointed easy operation further improves the operating efficiency.
The operation rod is detachably connected with the insulating sleeve, so that the operation rod can be separated from the insulating sleeve after the insulating sleeve is sleeved on the electrode rod, the operation rod is prevented from affecting the accuracy of a test result, and the operation rod can be separated from another insulating sleeve, so that materials are saved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following description will briefly explain the drawings needed in the description of the embodiments of the present application, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the contents of the embodiments of the present application and these drawings without inventive effort for those skilled in the art.
Fig. 1 shows a schematic diagram of a part of the auxiliary tool for testing the voltage transformation neutral point lightning arrester.
In the figure;
11. an inner sleeve; 12. a jacket; 121. a concave arc surface;
2. a conical clamping sleeve; 21. clamping the elastic sheet; 22. an electrode rod clamping opening;
3. an operation lever; 31. a clamping joint;
4. a connection part; 41. a clamping sleeve; 411. a clamping notch; 412. and (5) introducing an inclined plane.
Detailed Description
For the purposes of making the objects and embodiments of the present application more apparent, an exemplary embodiment of the present application will be described in detail below with reference to the accompanying drawings in which exemplary embodiments of the present application are illustrated, it being apparent that the exemplary embodiments described are only some, but not all, of the embodiments of the present application.
It should be noted that the brief description of the terminology in the present application is for the purpose of facilitating understanding of the embodiments described below only and is not intended to limit the embodiments of the present application. Unless otherwise indicated, these terms should be construed in their ordinary and customary meaning.
The terms first, second, third and the like in the description and in the claims and in the above-described figures are used for distinguishing between similar or similar objects or entities and not necessarily for describing a particular sequential or chronological order, unless otherwise indicated. It is to be understood that the terms so used are interchangeable under appropriate circumstances.
The terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or apparatus that comprises a list of elements is not necessarily limited to all elements explicitly listed, but may include other elements not expressly listed or inherent to such product or apparatus.
The technical scheme of the application is further described below by the specific embodiments with reference to the accompanying drawings.
The application provides an auxiliary tool for a voltage transformation neutral point arrester test, which is used for sleeving an insulating sleeve outside an electrode rod when a direct current leakage test of the arrester is carried out, so as to avoid the prior breakdown of a discharge gap, thereby omitting the work of dismantling the electrode rod and connecting sheets and equipment connected with the electrode rod on site, further reducing the risk of high falling, reducing the operation difficulty, and omitting the breakdown test required for recovering the discharge gap, further simplifying the flow of the direct current leakage test and improving the operation efficiency.
As shown in fig. 1, the auxiliary tool for testing the voltage transformation neutral point lightning arrester provided by the application comprises an insulating sleeve, a conical clamping sleeve 2 and an operating rod 3, wherein one end of the insulating sleeve is a sealed end, and the other end of the insulating sleeve is an open end; the large-diameter end of the conical clamping sleeve 2 is communicated with the opening end, the opening of the small-diameter end is an electrode rod clamping opening 22, and the electrode rod clamping opening 22 is arranged towards the sealing end; one end of the operating rod 3 is detachably connected to the insulating sleeve.
The experimental appurtenance of vary voltage neutral point arrester that this embodiment provided, including insulating cover, toper clamping sleeve 2 and action bars 3, the one end of insulating cover is sealed end, and the other end is the open end, and the big footpath end of toper clamping sleeve 2 communicates in the open end, and the opening of path end is electrode bar clamping opening 22, and electrode bar clamping opening 22 sets up towards sealed end, and the one end of action bars 3 can be dismantled and connect in insulating cover. When the lightning arrester direct current leakage test is carried out, an operator stands on the ground to connect one end of the operating rod 3 with the insulating sleeve, holds the other end of the operating rod 3, lifts the insulating sleeve to move to the neutral point of the lightning arrester, sleeves the insulating sleeve on the electrode rod through the opening of the large-diameter end of the conical clamping sleeve 2 until the electrode rod clamping opening 22 clamps the electrode rod, then separates the operating rod 3 from the insulating sleeve, changes the tip charge of the gap tip due to the insulating effect of the insulating sleeve, thereby changing the electric field distribution of the discharge gap, increasing the breakdown voltage of the discharge gap to above the test voltage under the condition that the distance is unchanged, and then avoiding the prior breakdown of the discharge gap, thereby omitting the work of dismantling the electrode rod at one side of the neutral point discharge gap and connecting sheets and equipment connected with the electrode rod, reducing the high-drop risk, reducing the operation difficulty, simplifying the operation procedure and improving the operation efficiency.
The big footpath end of toper clamping sleeve 2 communicates in the open end of insulating cover, and the opening of path end sets up towards the sealed end of insulating cover, therefore, at the in-process of insulating cover to the electrode rod, the electrode rod penetrates toper clamping sleeve 2 in through the opening of the big footpath end of toper clamping sleeve 2 earlier, then penetrates electrode rod clamping opening 22, the in-process of whole cup jointing, the guide effect has been played to the inner wall of toper clamping sleeve 22, cup joint the back in place, electrode rod clamping opening 22 presss from both sides the electrode rod tightly, the insulating isolation to the electrode rod has been realized, the easy operation of cup jointing further improves the operating efficiency.
The operation rod 3 is detachably connected with the insulating sleeve, so that after the insulating sleeve is sleeved on the electrode rod, the operation rod 3 can be separated from the insulating sleeve, the operation rod 3 is prevented from influencing the accuracy of a test result, and the operation rod 3 can be separated and connected with another insulating sleeve, so that materials are saved.
Alternatively, in other embodiments, the tapered clamping sleeve 2 may be a sleeve-like structure that is continuous along its circumference, and may perform the function of clamping the electrode rod.
Specifically, in this embodiment, the conical clamping sleeve 2 includes a plurality of clamping elastic pieces 21, one end of the clamping elastic piece 21 is connected to the open end, the other end is located in the insulating sleeve and is inclined toward the central axis of the insulating sleeve, the plurality of clamping elastic pieces 21 are sequentially arranged at intervals along the inner periphery of the insulating sleeve, and the other ends of the plurality of clamping elastic pieces 21 enclose an electrode rod clamping opening 22. The interval sets up between the tight shell fragment 21 of clamp for the tight shell fragment 21 of clamp has great deformation space, and the size of electrode rod clamp mouth 22 can change along with the diameter size of electrode rod, thereby makes toper clamp sleeve 2 can press from both sides the electrode rod of different diameters, and, the tight mouth 22 of electrode rod clamp is to the tight power of electrode rod be unlikely too big, has avoided damaging the performance of electrode rod, and the interval between the tight shell fragment 21 of clamp is as the passageway of inside and outside air current, has avoided inside and outside to form the atmospheric pressure difference and has led to difficult dismantlement.
More specifically, the clamping spring piece 21 is a trapezoid sheet structure, the long bottom edge of the trapezoid sheet structure is connected to the edge of the opening end of the insulating sleeve, the short bottom edge of the trapezoid sheet structure is located in the inner cavity of the insulating sleeve, and the short bottom edges of all trapezoid sheet structures enclose the electrode rod clamping opening 22. The arrangement is such that a plurality of clamping spring plates 21 form a conical clamping sleeve 2.
In particular, the conical clamping sleeve 2 is made of a soft rubber material. The conical clamping sleeve 2 made of soft rubber material has certain elasticity, and is in flexible contact with the electrode rod, so that the electrode rod is prevented from being scratched.
More specifically, the soft rubber material may be rubber, silicone rubber, TPU, TPE, soft PVC, or the like.
Alternatively, in other embodiments, the conical clamping sleeve 2 may also be made of a hard plastic material.
Specifically, the insulating sleeve includes an inner sleeve 11 and an outer sleeve 12 sleeved outside the inner sleeve 11, and the tapered clamping sleeve 2 is connected to the inner sleeve 11. The insulating sleeve is arranged into a double-layer structure, so that the double insulation effect is achieved, and the insulation effect is improved.
More specifically, the tapered clamping sleeve 2 and the inner sleeve 11 are integrally formed. The connection strength of the conical clamping sleeve 2 and the inner sleeve 11 is improved, and the service life is prolonged.
Specifically, the inner sleeve 11 is made of a soft rubber material.
Specifically, the outer sleeve 12 is made of epoxy resin, and the epoxy resin has excellent insulating property and mechanical property, so that the outer sleeve 12 has excellent insulating property and mechanical property, and the tip charge of the tip of the discharge gap of the main transformer neutral point can be well changed; moreover, the jacket 12 made of epoxy resin is lighter in weight and is convenient to lift to the electrode rod, so that the operation of the direct current leakage test of the lightning arrester is more convenient and quicker.
Specifically, the outer wall of the insulating sheath is provided with a connecting portion 4, and one end of the operating lever 3 is provided with a connector 31 detachably connected with the connecting portion 4. The arrangement of the connecting part 4 and the connecting head 31 realizes the detachable connection of the insulating sleeve and the operating rod 3.
More specifically, the connecting portion 4 includes a clamping sleeve 41, one end of the clamping sleeve 41 is connected to the outer wall of the insulating sleeve, the end of the other end is provided with a penetrating opening communicated with the inner cavity of the clamping sleeve 41, a clamping opening 411 is formed in the penetrating opening of the clamping sleeve 41, one end of the operating rod 3 is connected with a clamping head 31 in an included angle manner, one end of the operating rod 3 penetrates into the clamping sleeve 41, and the clamping head 31 is clamped in the clamping opening 411. One end of the operating rod 3 penetrates into the clamping sleeve 41, alignment accuracy when the operating rod 3 is connected with the connecting part 4 is improved, and the clamping connector 31 and the clamping notch 411 are matched and clamped, so that the operating rod 3 and the clamping sleeve 41 are detachably connected.
In this embodiment, the clamping connector 31 is vertically connected to one end of the operating rod 3, which is beneficial to improving the reliability of the clamping connection between the clamping connector 31 and the clamping notch 411.
Alternatively, in other embodiments, the snap-fit sleeve 41 may be a round sleeve structure.
Specifically, in the present embodiment, the clip 41 has a horn-like structure. The inner wall of loudspeaker form structure is the circular cone profile, plays the guide effect to the joint of counterpoint of action bars 3, has improved the convenience that action bars 3 and connecting portion 4 are connected.
Specifically, the connecting portion 4 further includes a connecting shaft, and an end of the clamping sleeve 41 facing away from the penetration port is fixedly connected to an outer wall of the outer jacket 12 through the connecting shaft.
Specifically, an opening of the clamping notch 411 is provided with an introduction inclined plane 412. The lead-in slope 412 plays a role in guiding the click-in of the click-in connector 31. In this embodiment, the opposite sides of the opening of the clamping opening 411 are provided with the guiding inclined planes 412, which further improves the alignment accuracy.
Specifically, the outer wall of the outer jacket 12 includes a concave arcuate surface 121 extending along the circumference of the outer jacket 12. The concave arcuate surface 121 is easy to grasp and the provision of the concave arcuate surface 121 reduces the bulk of the jacket 12 and saves material.
Specifically, the operating lever 3 includes a telescopic rod, one end of the telescopic rod is vertically connected to the clamping connector 31, and the other end of the telescopic rod is provided with a holding portion, which can be any structure in the prior art that is convenient to hold, and is not described here again.
When not in use, the telescopic rod can be shortened, the telescopic rod is convenient to carry, and when in use, the telescopic rod is stretched for lifting the insulating sleeve to the electrode rod. The telescopic rod can be any telescopic rod-shaped structure in the prior art, and can be a manual telescopic rod, for example, the telescopic rod is similar to a telescopic rod part on a selfie stick; or may be an automatic telescopic rod, for example, a pneumatic telescopic rod, etc. And are not listed here.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.
The foregoing description, for purposes of explanation, has been presented in conjunction with specific embodiments. However, the illustrative discussions above are not intended to be exhaustive or to limit the embodiments to the precise forms disclosed above. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles and the practical application, to thereby enable others skilled in the art to best utilize the embodiments and various embodiments with various modifications as are suited to the particular use contemplated.
Claims (10)
1. A voltage transformation neutral point arrester test appurtenance, characterized by comprising:
one end of the insulating sleeve is a sealing end, and the other end of the insulating sleeve is an opening end;
the large-diameter end of the conical clamping sleeve (2) is communicated with the opening end, the opening of the small-diameter end is an electrode rod clamping opening (22), and the electrode rod clamping opening (22) is arranged towards the sealing end;
and one end of the operating rod (3) is detachably connected with the insulating sleeve.
2. The auxiliary tool for testing the voltage transformation neutral point arrester according to claim 1, wherein the conical clamping sleeve (2) comprises a plurality of clamping elastic pieces (21), one end of each clamping elastic piece (21) is connected to the open end, the other end of each clamping elastic piece is located in the insulating sleeve and is obliquely arranged towards the central axis of the insulating sleeve, the plurality of clamping elastic pieces (21) are sequentially arranged at intervals along the inner periphery of the insulating sleeve, and the other ends of the plurality of clamping elastic pieces (21) encircle the electrode rod clamping opening (22).
3. The auxiliary tool for testing the voltage transformation neutral point arrester according to claim 1, wherein the conical clamping sleeve (2) is made of a soft rubber material.
4. The auxiliary tool for testing the voltage transformation neutral point arrester according to claim 1, wherein the insulating sleeve comprises an inner sleeve (11) and an outer sleeve (12) sleeved outside the inner sleeve (11), and the conical clamping sleeve (2) is connected with the inner sleeve (11).
5. The auxiliary tool for testing a voltage transformation neutral point arrester according to claim 4, wherein the conical clamping sleeve (2) and the inner sleeve (11) are integrally formed.
6. The auxiliary tool for testing the voltage transformation neutral point arrester according to claim 1, wherein a connecting portion (4) is arranged on the outer wall of the insulating sleeve, and a connector (31) detachably connected with the connecting portion (4) is arranged at one end of the operating rod (3).
7. The auxiliary tool for testing the voltage transformation neutral point arrester according to claim 6, wherein the connecting portion (4) comprises a clamping sleeve (41), one end of the clamping sleeve (41) is connected to the outer wall of the insulating sleeve, a penetrating opening communicated with the inner cavity of the clamping sleeve is formed in the end of the other end of the clamping sleeve, a clamping gap (411) is formed in the penetrating opening of the clamping sleeve (41), a clamping connector (31) is connected to one end of the operating rod (3) in an included angle mode, one end of the operating rod (3) penetrates into the clamping sleeve (41), and the clamping connector (31) is clamped in the clamping gap (411).
8. The auxiliary tool for testing the voltage transformation neutral point arrester according to claim 7, wherein the clamping sleeve (41) is of a horn-shaped structure.
9. The auxiliary tool for testing the voltage transformation neutral point arrester according to claim 7, wherein an introduction inclined plane (412) is arranged at the opening of the clamping notch (411).
10. The auxiliary tool for testing a voltage transformation neutral point arrester according to claim 4, wherein the outer wall of the outer sleeve (12) comprises a concave arc-shaped surface (121) extending along the circumferential direction of the outer sleeve (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310981584.4A CN117169774A (en) | 2023-08-07 | 2023-08-07 | Auxiliary tool for testing voltage transformation neutral point lightning arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310981584.4A CN117169774A (en) | 2023-08-07 | 2023-08-07 | Auxiliary tool for testing voltage transformation neutral point lightning arrester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117169774A true CN117169774A (en) | 2023-12-05 |
Family
ID=88932682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310981584.4A Pending CN117169774A (en) | 2023-08-07 | 2023-08-07 | Auxiliary tool for testing voltage transformation neutral point lightning arrester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117169774A (en) |
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2023
- 2023-08-07 CN CN202310981584.4A patent/CN117169774A/en active Pending
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