Lightning arrester test tool

Abstract

A lightning arrester test tool disclosed by the utility model relates to the technical field of lightning arresters, and comprises a plurality of test modules which are connected in parallel, each test module comprises a plurality of support plates, resistor discs and a connecting assembly, the plurality of support plates are arranged in a laminated manner, the plurality of resistor discs are arranged between two adjacent support plates, and the resistor discs are flatly laid on the support plates and are arranged at intervals. The connecting assembly comprises a first conductive connecting sheet and a second conductive connecting sheet, the first conductive connecting sheet is conductively connected between the resistor discs on the same layer of supporting plate, and the second conductive connecting sheet is conductively connected between the resistor discs on different layers of supporting plates, so that all the resistor discs in each test module are sequentially connected in series. According to the lightning arrester test tool disclosed by the utility model, by adopting a mode of tiling the resistor discs, the number of the resistor discs per unit height is increased, and the height of a single-column resistor disc column is effectively reduced, so that the overall structural height of the test tool can be effectively reduced, and the stability and the safety of the test tool are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of lightning arresters, and more specifically to a lightning arrester test tool. Background Art

[0002] Lightning arrester, also known as overvoltage protector or overvoltage limiter, is an electrical device used to protect electrical equipment from high transient overvoltage and limit the follow-on time or follow-on amplitude. Lightning arrester is usually connected between the cable and the ground, in parallel with the protected equipment. Lightning arrester can effectively protect communication equipment. Once abnormal voltage occurs, the lightning arrester will be activated to play a protective role.

[0003] Most of the existing AC and DC UHV arresters are designed to have multiple resistor columns in parallel, with the number of columns ranging from 2 to 6, and some types even have dozens of resistor columns in parallel. According to the requirements of GB / T11032-2020 and GB / T 22389-2008, the arrester needs to be tested for current distribution. However, in actual operation, due to the high electrical parameters of the arrester and the large number of resistors inside the arrester, the structural height of a single resistor column can often reach 1.5 meters or even more. During the test, the placement of the resistor column is very inconvenient and has safety hazards. In addition, for resistor columns with a large number of resistors, the existing technology uses a segmented measurement method for testing, which will affect the measurement accuracy, and the measurement of the entire section of the resistor column will have a greater safety risk.

[0004] Therefore, how to safely implement the current distribution test of the lightning arrester has become a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0005] In view of this, an object of the present invention is to provide a lightning arrester test fixture to safely implement a current distribution test of the lightning arrester.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A lightning arrester test fixture comprises a plurality of test modules connected in parallel, wherein the test modules comprise:

[0008] A plurality of support plates are stacked;

[0009] Resistor sheets, a plurality of which are arranged between two adjacent support plates, and the resistor sheets are laid flat on the support plates and arranged at intervals;

[0010] The connecting component includes a first conductive connecting plate and a second conductive connecting plate, wherein the first conductive connecting plate is conductively connected between the resistor plates on the same layer of the support plate, and is used to connect the resistor plates on the same layer of the support plate in series in sequence, and the second conductive connecting plate is conductively connected between the resistor plates on different layers of the support plate, so that the resistor plates in each of the test modules are connected in series in sequence.

[0011] Optionally, in the above-mentioned arrester test fixture, the two resistor sheets located on the same layer of the support plate and along the series connection direction of the resistor sheets, and located at the ends are respectively a high-voltage resistor sheet and a low-voltage resistor sheet;

[0012] Any two of the support plates are respectively a first support plate and a second support plate;

[0013] The second conductive connecting sheet is conductively connected between the low voltage resistor sheet on the first supporting plate and the high voltage resistor sheet on the second supporting plate, and each of the high voltage resistor sheet and the low voltage resistor sheet is conductively connected to only one of the second conductive connecting sheets.

[0014] Optionally, in the above-mentioned arrester test fixture, the support plate located at the top in the vertical direction in each of the test modules is the top support plate, the high-voltage resistor on the support plate located on a layer below the top support plate is the first resistor, and along the electrical flow direction, the first resistor is the most upstream of the high-voltage resistors;

[0015] A high-voltage connection plate is provided on the top support plate in each of the test modules, and each of the first resistor sheets is conductively connected to the high-voltage connection plate.

[0016] Optionally, in the above-mentioned lightning arrester test fixture, a conductive connection hole is opened on the top support plate, the conductive connection hole is opposite to the first resistor and the high-voltage connection plate, and the first resistor is conductively connected to the high-voltage connection plate at the conductive connection hole.

[0017] Optionally, in the above-mentioned lightning arrester test fixture, the connection assembly also includes a third conductive connecting plate, the third conductive connecting plate bypasses the top support plate and the two ends of the third conductive connecting plate are conductively connected to the first resistor and the high-voltage connecting plate respectively.

[0018] Optionally, in the above-mentioned arrester test fixture, the support plate located at the bottom in the vertical direction in each of the test modules is a bottom support plate, the low-voltage resistor located on the bottom support plate is a second resistor, and along the electrical flow direction, the second resistor is the most downstream of the low-voltage resistors;

[0019] Each of the second resistor sheets is conductively connected to a low-voltage output terminal.

[0020] Optionally, in the above-mentioned arrester test fixture, the two resistors connected in series on the support plate at the same layer are respectively a third resistor and a fourth resistor, and the first conductive connecting sheet includes:

[0021] A transition portion extending between the low voltage end of the third resistor and the high voltage end of the fourth resistor;

[0022] A first connecting portion, used for conductively connecting to the low voltage end of the third resistor, and arranged at the first end of the transition portion;

[0023] The second connecting portion is used for conductive connection with the high voltage end of the fourth resistor and is arranged at the second end of the transition portion.

[0024] Optionally, in the above-mentioned arrester test fixture, the resistor sheets are arranged in an array of x rows and y columns between two adjacent support plates, and both x and y are positive integers.

[0025] Optionally, the above-mentioned arrester test fixture further includes a fixing component, and the fixing component includes:

[0026] A support column, wherein a fixing hole is formed on the support plate, and the fixing hole avoids the position of the resistor, the support column passes through the fixing hole, and the end is locked by a locking member;

[0027] A fixed insulating pad is arranged at one end of the support column for contacting the ground.

[0028] Optionally, in the above-mentioned arrester test fixture, the support plate is made of insulating material; or,

[0029] An insulating protective pad is arranged between the support plate and each of the resistor sheets.

[0030] The lightning arrester test fixture provided by the utility model includes a plurality of test modules connected in parallel, the test modules include a support plate, a resistor and a connection assembly, the support plates are stacked to form different support structure layers, a plurality of resistors are arranged between two adjacent support plates, the resistors are laid flat on the support plates and arranged at intervals. The connection assembly includes a first conductive connection plate and a second conductive connection plate, the first conductive connection plate is conductively connected between the resistors on the same layer of support plates, and is used to connect the resistors on the same layer of support plates in series, and the second conductive connection plate is conductively connected between the resistors on different layers of support plates, so that all the resistors in each test module are connected in series in sequence.

[0031] Each test module can effectively reduce the height of the resistor column by arranging multiple resistors on each layer of support plates, and the connecting components can connect the resistors on the same layer and different layers of support plates in series in sequence, so that the current distribution test of the lightning arrester with multiple resistor columns in parallel can be simulated by connecting the test modules in parallel.

[0032] Compared with the prior art, the lightning arrester test fixture provided by the utility model increases the number of resistors per unit height by adopting the method of flattening resistors, effectively reduces the height of single-column resistor columns, and effectively reduces the overall structural height of the test fixture, thereby ensuring the stability and safety of the test fixture. The structure is simple and reliable, providing a guarantee for the safe implementation of current distribution tests. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 An axonometric diagram of a test module disclosed in an embodiment of the utility model;

[0035] Figure 2 It is a front view of the test module disclosed in the embodiment of the utility model;

[0036] Figure 3 A side view of the test module disclosed in the embodiment of the utility model;

[0037] Figure 4 A top view of the test module disclosed in the embodiment of the utility model;

[0038] Figure 5 An axonometric view of a lightning arrester test fixture disclosed in an embodiment of the utility model;

[0039] Figure 6 It is a front view of the arrester test tooling disclosed in the embodiment of the utility model;

[0040] Figure 7 A side view of a lightning arrester test fixture disclosed in an embodiment of the utility model;

[0041] Figure 8 The utility model is a top view of the arrester test tooling disclosed in the embodiment.

[0042] Wherein, 100 is a test module, 110 is a support plate, 111 is a conductive connection hole, 120 is a resistor, 130 is a first conductive connection sheet, 131 is a second conductive connection sheet, and 140 is a low voltage output terminal;

[0043] 200 is a high voltage connection plate. DETAILED DESCRIPTION

[0044] The core of the utility model is to disclose a lightning arrester test tool to safely implement the current distribution test of the lightning arrester.

[0045] The following describes the embodiments with reference to the accompanying drawings. In addition, the embodiments shown below do not limit the contents of the utility model described in the claims. In addition, the entire contents of the structures represented by the following embodiments are not limited to those necessary as solutions of the utility model described in the claims. It should be noted that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings. In the absence of conflict, the embodiments in the utility model and the features in the embodiments can be combined with each other.

[0046] Combination Figure 1 and Figure 5 The lightning arrester test fixture disclosed in the embodiment of the utility model includes a plurality of test modules 100 connected in parallel with each other. The test module 100 includes a support plate 110, a resistor 120 and a connection assembly. The support plates 110 are stacked to form different support structure layers. A plurality of resistors 120 are arranged between two adjacent support plates 110. The resistors 120 are laid flat on the support plates 110 and arranged at intervals. The connection assembly includes a first conductive connection sheet 130 and a second conductive connection sheet 131. The first conductive connection sheet 130 is conductively connected between the resistors 120 on the same layer (or layers) of the support plates 110 to connect the resistors 120 on the same layer of the support plates 110 in series. The second conductive connection sheet 131 is conductively connected between the resistors 120 on different layers of the support plates 110 to connect all the resistors 120 in each test module 100 in series.

[0047] Each test module 100 can effectively reduce the height of the resistor column by arranging multiple resistors 120 on each layer of the support plate 110, and the connecting component can connect the resistors 120 located on the same layer and different layers of the support plate 110 in series in sequence, so that the current distribution test of the lightning arrester with multiple resistor columns connected in parallel can be simulated by connecting each test module 100 in parallel.

[0048] Compared with the prior art, the lightning arrester test fixture disclosed in the embodiment of the utility model increases the number of resistor sheets 120 per unit height by adopting the method of flattening the resistor sheets 120, effectively reduces the height of the single-column resistor sheet column, and effectively reduces the overall structural height of the test fixture, thereby ensuring the stability and safety of the test fixture, and the structure is simple and reliable, providing a guarantee for the safe implementation of the current distribution test.

[0049] Along the series connection direction of the resistors 120, the two resistors 120 located at the ends on the same layer of support plates 110 are defined as a high-voltage resistor and a low-voltage resistor, respectively. The current is used to flow in the direction from the high-voltage resistor to the low-voltage resistor. Any two support plates 110 are defined as the first support plate and the second support plate, respectively. The second conductive connecting plate 131 is conductively connected between the low-voltage resistor on the first support plate and the high-voltage resistor on the second support plate, and each high-voltage resistor and low-voltage resistor is only connected once (conductively connected to only one second conductive connecting plate 131), so that each resistor 120 in each test module 100 is connected in series in sequence.

[0050] Among them, along the vertical direction, the first support plate can be arranged above or below the second support plate, and the first support plate and the second support plate can be adjacent or non-adjacent. In one embodiment, the first support plate and the second support plate are adjacent, that is, the second conductive connecting plate 131 is connected layer by layer between the low-voltage resistors on the two adjacent layers of the first support plate and the high-voltage resistors on the second support plate, so that when current is passed to the high-voltage resistors on the top (or bottom) support plate 110, the current can flow from the high-voltage resistors on each support plate 110 to the low-voltage resistors in turn, and be drawn out by the low-voltage resistors on the bottom (or top) support plate 110.

[0051] Specifically, combined Figure 5 and Figure 8 In each test module 100, the (one) support plate 110 located at the top in the vertical direction is defined as the top support plate, the high-voltage resistor on the support plate 110 below the top support plate is the first resistor, and along the direction of electrical flow, the first resistor is located at the most upstream position among the high-voltage resistors (that is, the first resistor is the one with the highest voltage among the high-voltage resistors), then a high-voltage connecting plate 200 is provided on the top support plate in each test module 100, and each first resistor is conductively connected to the high-voltage connecting plate 200.

[0052] The high voltage connection plates 200 may be electrically connected via conductive connecting sheets, or may be Figure 8 The structure shown is an integrated structure, so that by passing current into the high-voltage connection plate 200, the same current can be applied to each test module 100 at the same time, and a current distribution test can be performed.

[0053] In one embodiment, in combination Figure 4 A conductive connection hole 111 is provided on the top support plate. The conductive connection hole 111 is opposite to the first resistor and the high-voltage connection plate 200 . The high-voltage end of the first resistor is conductively connected to the high-voltage connection plate 200 at the conductive connection hole 111 .

[0054] In order to ensure that the parameters of each resistor 120 are the same, a conductive connecting plate can be set at the conductive connecting hole 111, and the two ends of the conductive connecting plate are respectively conductively connected to the first resistor and the high-voltage connecting plate 200, so that the first resistor does not need to extend from the conductive connecting hole 111 to the high-voltage connecting plate 200 and be connected thereto, and the structure is simple.

[0055] In another embodiment, the connection assembly further includes a third conductive connection sheet, the structure of the third conductive connection sheet is similar to that of the second conductive connection sheet 131, and the first resistor sheet and the high voltage connection board 200 are connected via the third conductive connection sheet. Figure 6 When the first resistor and the high-voltage connecting plate 200 are both arranged at the same end of the top supporting plate, the third conductive connecting plate can be passed from the first resistor around the end of the top insulating plate until it is connected to the high-voltage connecting plate 200.

[0056] Combination Figure 2 In each test module 100, the (one) support plate 110 located at the bottom in the vertical direction is defined as the bottom support plate, the low-voltage resistor located on the bottom support plate is the second resistor, and along the flow direction of electricity, the second resistor is located at the most downstream position among the low-voltage resistors (that is, the second resistor is the one with the lowest voltage among the low-voltage resistors), and each second resistor is conductively connected to a low-voltage output terminal 140 to conduct electricity.

[0057] The low voltage output terminal 140 may be a conductive connecting piece or wiring piece compressed between the bottom support plate and the second resistor piece.

[0058] It should be noted that, according to the different connection positions of the second conductive connecting sheet 131 (the number of layers of the supporting plate 110 where the second conductive connecting sheet 131 is connected to the resistor 120), the low-voltage output terminal 140 can be set on different layers of the supporting plate 110, and it is only necessary to ensure that the low-voltage output terminal 140 is connected to the lowest voltage end of the resistor 120 (the low-voltage end of the resistor 120 at the end along the electrical flow direction). Among them, the low-voltage output terminal 140 is set on the bottom support plate 110, the high-voltage connecting plate 200 is set on the top support plate 110, and the resistors 120 of each layer are connected in series layer by layer, which is a preferred solution for simulating the wiring of a commonly used lightning arrester.

[0059] During the test, the high voltage is connected at the high voltage connection board 200 , and is successively reduced to a low voltage through the series electrical structure composed of the connection components and the resistor 120 , and is finally led out through the low voltage output terminal 140 .

[0060] In a specific embodiment disclosed in the present utility model, the first conductive connecting sheet 130 includes a transition portion, a first connecting portion and a second connecting portion, and the two resistors 120 located on the same layer of the support plate 110 and connected in series are defined as a third resistor and a fourth resistor, and along the direction of electrical flow, the third resistor is located upstream of the fourth resistor, and the transition portion extends between the low-voltage end of the third resistor and the high-voltage end of the fourth resistor, the first connecting portion is used for conductive connection with the low-voltage end of the third resistor, and is arranged at the first end of the transition portion, and the second connecting portion is used for conductive connection with the high-voltage end of the fourth resistor, and is arranged at the second end of the transition portion.

[0061] The transition portion, the first connection portion and the second connection portion are all made of conductive materials to achieve series connection of the resistor 120 .

[0062] Combination Figure 2 The first connection portion and the second connection portion on a first conductive connection sheet 130 may be arranged on the same plane or on different planes. When the electrical current flows in the third resistor sheet and the fourth resistor sheet in the same direction (for example Figure 6 As shown from top to bottom), the first connection portion and the second connection portion can be arranged in the same plane, and the transition portion, the first connection portion and the second connection portion are also arranged in the same plane, so that after the electricity flows out from the low-voltage end of the third resistor, it can enter the high-voltage end of the fourth resistor in parallel along the first connection portion, the transition portion and the second connection portion in sequence, and then enter the next resistor 120 after moving in the vertical direction inside the fourth resistor.

[0063] like Figure 2 As shown, when the directions of electrical flow in the third resistor and the fourth resistor are opposite, the first connection portion and the second connection portion of the first conductive connecting sheet 130 are arranged in different planes, and the transition portion is bent and connected between the first connection portion and the second connection portion.

[0064] Specifically, the transition portion may have a cross-section similar to a "Z" shape, and the angles between the various bending portions of the transition portion may be 90° or greater than 90°.

[0065] It should be noted that, according to the different locations where the high-voltage resistor and the low-voltage resistor are actually arranged on the support plate 110 , the structure of the second conductive connecting sheet 131 is also different.

[0066] Combination Figure 3In one embodiment, the high-voltage resistor and the low-voltage resistor on two adjacent support plates 110 are positioned opposite to each other and are both arranged at the end of one end of the support plate 110. The structure of the second conductive connecting plate 131 is similar to that of the first conductive connecting plate 130, including a third connecting portion, a fourth connecting portion and an extension portion connected between the third connecting portion and the fourth connecting portion. The third connecting portion is used to connect to the low-voltage resistor on the first support plate, and the fourth connecting portion is used to connect to the high-voltage resistor on the second support plate, and the two ends of the extension portion extend respectively to between the low-voltage resistor on the first support plate and the high-voltage resistor on the second support plate.

[0067] Different from the first conductive connecting sheet 130 , the third connecting portion and the fourth connecting portion are disposed on the same side of the extending portion, and the extending portion spans the first supporting plate or the second supporting plate (the supporting plate 110 between the first supporting plate and the second supporting plate).

[0068] In another embodiment, the high-voltage resistor and the low-voltage resistor on two adjacent support plates 110 are opposite to each other and are both arranged near the middle (or non-edge) of the support plate 110. Then, an avoidance hole can be opened on the support plate 110 at a position close to the high-voltage resistor or the low-voltage resistor (and an avoidance hole can be opened at a position corresponding to the high-voltage resistor on the support plate 110 between the first support plate and the second support plate), so that the second conductive connecting plate 131 can directly pass through each support plate 110 at the avoidance hole to achieve conductive connection between the high-voltage resistor and the low-voltage resistor on different layers of support plates 110.

[0069] Since the resistor 120 is generally cylindrical or pancake-shaped, in order to ensure the conductive connection effect with the resistor 120, the first connecting part, the second connecting part, the third connecting part and the fourth connecting part can all be designed to be disc-shaped and correspond to the cross-sectional size of the resistor 120, or slightly smaller than the cross-sectional size of the resistor 120.

[0070] It should be noted that the number of layers of the support plate 110 can be adjusted according to the number of resistors 120 in the resistor column that actually need to be tested, and the number of resistors 120 in each layer can be the same or different, as long as it does not affect the introduction or extraction of electricity (current).

[0071] Specifically, the resistor sheets 120 on a layer of support plates 110 can be arranged in a variety of ways, for example, an array of x rows and y columns of resistor sheets 120 is arranged between two adjacent support plates 110, where x and y are both positive integers. By laying the resistor sheets 120 flat on each layer of support plates 110, the height of the resistor sheet column can be effectively reduced.

[0072] In one embodiment, in combination Figure 6 and Figure 7There are four test modules 100, each of which includes four support plates 110 and three layers of resistors 120. Each layer of resistors 120 is arranged in a column and three rows, and a current distribution test is performed thereon. Overall, the electrical current moves from top to bottom in each test module 100 in an "S" shape.

[0073] The arrester test fixture disclosed in the utility model can be built by directly stacking the resistor 120 and the support plate 110. In order to improve the stability of the test fixture structure, in a specific embodiment disclosed in the utility model, the test fixture also includes a fixing component, and the fixing component includes a support column and a fixed insulating pad. A fixing hole is provided on the support plate 110, and the fixing hole avoids the position of the resistor 120, and the positions of the fixing holes on each support plate 110 are corresponding. The support column can pass through each fixing hole in the vertical direction, and the end is locked by a locking member to press the resistor 120 on each support plate 110. The fixed insulating pad is used to be set at one end of the support column that is used to contact the ground to achieve insulation protection between the support column and the ground.

[0074] Specifically, the support column is a plurality of (eg, four) support columns evenly arranged around the support plate 110. The locking member may be a locking device including a locking nut. When the locking member is a locking nut, the support column may be a rod-shaped structure with a threaded end.

[0075] It should be noted that the support plate 110 can be directly made of insulating materials, so that the test tooling disclosed in the embodiment of the utility model can be directly set on the ground.

[0076] In one embodiment, the support plate 110 is made of a metal material with high structural strength, and insulating protective pads are provided between the support plate 110 and each resistor 120, between the support plate 110 and the high-voltage connecting plate 200, between the support plate 110 and the low-voltage terminal, and between the support plate 110 and the ground to ensure the safety of the test.

[0077] Combination Figure 8 The structures and materials of the support plate 110 and the high voltage connection plate 200 may be the same or different.

[0078] In order to ensure the conductive connection effect between each conductive connecting plate (the first conductive connecting plate 130, the second conductive connecting plate 131 and the third conductive connecting plate) and the resistor 120, an embedding groove for the end of the conductive connecting plate to be embedded is also provided on the insulating protective pad. The shape of the embedding groove corresponds to the shape of the end of the conductive connecting plate to facilitate the placement of the conductive connecting plate. By pressing the insulating protective pad, the connection effect between the resistor 120 and the conductive connecting plate can be ensured.

[0079] Furthermore, in order to better embed the conductive connecting sheet and prevent the conductive connecting sheet from being offset relative to the insulating protective pad, the connection between the insulating protective pad and the first conductive connecting sheet 130 is taken as an example below:

[0080] The embedding groove includes a connection part embedding groove for positioning and cooperating with the first connection part or the second connection part, and a transition part embedding groove for embedding the end of the transition part. The transition part embedding groove is connected to the connection part embedding groove and is arranged on one side of the connection part embedding groove. Through the setting of the transition part embedding groove, while ensuring the fitting effect between the insulating protection pad and the transition part, the assembly of the first conductive connecting plate 130 and the fixed insulating pad can be guided, thereby facilitating the placement of the first conductive connecting plate 130.

[0081] The connection between the embedding groove and the second conductive connecting plate 131 and the third conductive connecting plate is similar to the above connection, which will not be described in detail.

[0082] The above-mentioned insulating protective pads and fixed insulating pads are both made of high-strength insulating materials, and the connecting components are made of metal materials (such as copper) with excellent electrical conductivity and good ductility.

[0083] The above description of the disclosed embodiments enables professionals and technicians in the field to implement or use the utility model. Various modifications to these embodiments will be obvious to professionals and technicians in the field, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. The specific technical means in some embodiments can be combined in part or in whole into another embodiment without being explicitly excluded by another embodiment. Therefore, the utility model will not be limited to the embodiments shown in this article, but will conform to the widest range consistent with the principles and novel features disclosed herein.

Claims

1. A lightning arrester test tool, characterized in that: The invention comprises a plurality of test modules (100) connected in parallel with each other, wherein the test module (100) comprises: A plurality of support plates (110) are stacked; Resistor sheets (120), a plurality of resistor sheets (120) being arranged between two adjacent support plates (110), and the resistor sheets (120) being laid flat on the support plates (110) and arranged at intervals; A connection assembly comprises a first conductive connection sheet (130) and a second conductive connection sheet (131), wherein the first conductive connection sheet (130) is conductively connected between the resistor sheets (120) on the same layer of the support plate (110) so as to connect the resistor sheets (120) on the same layer of the support plate (110) in series, and the second conductive connection sheet (131) is conductively connected between the resistor sheets (120) on different layers of the support plate (110) so as to connect the resistor sheets (120) in series in sequence.

2. The arrester test fixture according to claim 1, characterized in that: The two resistor sheets (120) located on the same layer of the support plate (110) and located at the ends along the series connection direction of the resistor sheets are respectively a high voltage resistor sheet and a low voltage resistor sheet; Any two of the support plates (110) are respectively a first support plate and a second support plate; The second conductive connecting sheet (131) is conductively connected between the low-voltage resistor sheet on the first supporting plate and the high-voltage resistor sheet on the second supporting plate, and both the high-voltage resistor sheet and the low-voltage resistor sheet are conductively connected to only one of the second conductive connecting sheets (131).

3. The arrester test fixture according to claim 2, characterized in that: The support plate (110) located at the top in the vertical direction in each of the test modules (100) is a top support plate, the high-voltage resistor on the support plate (110) located at a layer below the top support plate is a first resistor, and along the electrical flow direction, the first resistor is the most upstream of the high-voltage resistors; A high-voltage connection plate (200) is provided on the top support plate in each of the test modules (100), and each of the first resistor sheets is conductively connected to the high-voltage connection plate (200).

4. The arrester test fixture according to claim 3, characterized in that: A conductive connection hole (111) is provided on the top support plate, the conductive connection hole (111) is opposite to the first resistor and the high-voltage connection plate (200), and the first resistor is conductively connected to the high-voltage connection plate (200) at the conductive connection hole (111).

5. The arrester test fixture according to claim 3, characterized in that: The connection assembly also includes a third conductive connecting plate, which bypasses the top support plate and has two ends conductively connected to the first resistor plate and the high-voltage connecting plate (200) respectively.

6. The arrester test fixture according to claim 2, characterized in that: The support plate (110) located at the bottom in the vertical direction in each of the test modules (100) is a bottom support plate, the low-voltage resistor located on the bottom support plate is a second resistor, and along the electrical flow direction, the second resistor is the most downstream of the low-voltage resistors; Each of the second resistor sheets is conductively connected to a low-voltage output terminal (140).

7. The arrester test fixture according to any one of claims 1 to 6, characterized in that: The two resistor sheets (120) connected in series on the same layer of the support plate (110) are respectively a third resistor sheet and a fourth resistor sheet, and the first conductive connecting sheet (130) comprises: A transition portion extending between the low voltage end of the third resistor and the high voltage end of the fourth resistor; A first connecting portion, used for conductively connecting to the low voltage end of the third resistor, and arranged at the first end of the transition portion; The second connecting portion is used for conductive connection with the high voltage end of the fourth resistor and is arranged at the second end of the transition portion.

8. The arrester test fixture according to any one of claims 1 to 6, characterized in that: The resistor sheets (120) are arranged in an array of x rows and y columns between two adjacent support plates (110), and both x and y are positive integers.

9. The arrester test fixture according to any one of claims 1 to 6, characterized in that: Also included is a fixing assembly, the fixing assembly comprising: A support column, wherein a fixing hole is provided on the support plate (110), and the fixing hole avoids the position of the resistor (120), and the support column passes through the fixing hole, and the end portion is locked by a locking member; A fixed insulating pad is arranged at one end of the support column for contacting the ground.

10. The arrester test fixture according to any one of claims 1 to 6, characterized in that: The support plate (110) is made of insulating material; or, An insulating protective pad is provided between the support plate (110) and each resistor sheet (120).

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