A busbar withstand voltage test tooling

Abstract

The present invention relates to the technical field of electrical performance testing, and particularly relates to a busbar withstand voltage test tooling. The busbar withstand voltage test tooling includes a connecting busbar with insulators, a conductive contact seat is fixed on a metal insert of the insulator, a transition conductor is inserted in the conductive contact seat, and the transition conductor can rotate relative to the conductive contact seat. The busbar withstand voltage test tooling further includes a transition conductor mounting structure. The transition conductor mounting structure includes a base body fixed on the bottom wall of the conductive contact seat. A first stop portion is radially extended outwards on the base body, and the first stop portion and the bottom wall of the conductive contact seat are arranged at intervals along the axial direction of the conductive contact seat; a second stop portion is radially extended inwards on the transition conductor, and the second stop portion can be placed between the first stop portion and the conductive contact seat as the transition conductor rotates, and axially stop and cooperate with the first stop portion. When the second stop portion is placed between the first stop portion and the conductive contact seat, a pin component is inserted into a jack or a slot to prevent relative rotation between the transition conductor and the conductive contact seat.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical performance testing, and particularly relates to a busbar withstand voltage test tooling. Background Art

[0002] In recent years, with the rapid development of power grid construction, the quantity and scale of substation construction have been greatly improved. Correspondingly, the scale of GIS / HGIS widely used in power stations has also expanded, the length of the GIS busbar has increased, and the quantity and specifications of busbar units have increased, which puts forward higher requirements for the busbar withstand voltage test tooling. The busbar withstand voltage test tooling generally includes a connecting busbar. One end of the connecting busbar is connected to a withstand voltage device, and there is an insulator on the withstand voltage end of the connecting busbar. The insulator is used to connect with the busbar housing of the busbar to be tested; a conductive contact seat is fixedly installed on the metal insert of the insulator. The bottom wall of the conductive contact seat is fixed on the metal insert, and its opening is used for inserting and installing with the busbar conductor of the busbar to be tested to perform a withstand voltage test.

[0003] For busbars of different specifications, their outer diameters, lengths, and current-carrying capacities are all different. In the past, when performing a withstand voltage test on busbars of different specifications, a transition conductor needed to be installed on the conductive contact seat. Different specifications of transition conductors were designed and processed according to different specifications of busbars. The transition conductor was inserted into the conductive contact seat, and the busbar conductor of the busbar to be tested was inserted into the transition conductor to achieve conductive connection of the busbar conductor, the transition conductor, and the conductive contact seat. However, the problem lies in that the transition conductor is installed on the conductive contact seat by screws. Each time a busbar of a different specification is subjected to a withstand voltage test, the original transition conductor needs to be removed and a new specification of transition conductor needs to be installed, resulting in a large amount of assembly work and a long time-consuming. Summary of the Invention

[0004] The purpose of the present invention is to provide a busbar withstand voltage test tooling to solve the technical problem of inconvenient disassembly and assembly when replacing the transition conductor in the prior art.

[0005] To achieve the above purpose, the technical solution of the busbar withstand voltage test tooling of the present invention is: a busbar withstand voltage test tooling, including:

[0006] A connecting busbar, including an insulator for installing the busbar housing of the busbar to be tested;

[0007] A conductive contact seat fixedly arranged on the metal insert of the insulator;

[0008] A transition conductor inserted into the conductive contact seat and conductively connected to the conductive contact seat. The transition conductor is used for inserting and sleeving connection with the busbar conductor of the busbar to be tested, and the transition conductor can rotate relative to the conductive contact seat;

[0009] The busbar withstand voltage test tooling further includes a transition conductor installation structure for installing the transition conductor on the conductive contact seat;

[0010] The transition conductor mounting structure includes:

[0011] A base body, fixedly arranged on the bottom wall of the conductive contact seat, and the transition conductor is sleeved outside the base body;

[0012] A first stop portion and a second stop portion, the first stop portion is arranged on the base body and extends radially outwards, and the first stop portion and the bottom wall of the conductive contact seat are arranged at intervals along the axial direction of the conductive contact seat;

[0013] The second stop portion is arranged on the transition conductor and extends radially inwards, and the second stop portion can be placed between the first stop portion and the conductive contact seat as the transition conductor rotates, and is axially stop - cooperated with the first stop portion;

[0014] A pin component is axially movably penetrated in the first stop portion, and a jack or a slot is arranged on the second stop portion. When the second stop portion is placed between the first stop portion and the conductive contact seat as the transition conductor rotates, the pin component is inserted into the jack or the slot to prevent the relative rotation between the transition conductor and the conductive contact seat.

[0015] The beneficial effects of the present invention are as follows: By rotating the transition conductor, the first stop portion and the second stop portion can be axially stopped against each other, preventing the transition conductor from axially disengaging from the conductive contact seat. The pin component can cooperate with both the first stop portion and the second stop portion, thereby preventing the relative rotation of the transition conductor with respect to the conductive contact seat, so as to keep the first stop portion and the second stop portion in the axially stopped position and prevent disconnection. The transition conductor mounting structure in the present invention realizes the installation by the cooperation of the first stop portion and the second stop portion and the cooperation of the pin component with the two stop portions. During disassembly and assembly, only the pin component needs to be pulled out and the transition conductor needs to be rotated, without the need to turn screws, which is convenient to operate and takes less time.

[0016] As a further optimized solution, the transition conductor mounting structure further includes a compression spring that applies an elastic force to the pin component to drive the pin component to insert into the jack or the slot.

[0017] The effect of this solution is that the compression spring ensures that the pin component is inserted into the jack or the slot, realizing automatic insertion and retention, and is more reliable in use.

[0018] As a further optimized solution, a through - hole for the pin component to penetrate is arranged in the first stop portion, and the through - hole is a stepped hole, and the stepped hole has a stepped surface facing the busbar conductor;

[0019] The pin component includes a retaining ring for stop - cooperating with the stepped surface;

[0020] The transition conductor mounting structure further includes a compression - spring support member fixed on the through - hole, and the pin component passes through the compression - spring support member;

[0021] The compression spring is elastically pressed between the retaining ring and the compression - spring support member.

[0022] As a further optimized solution, the bolt component includes:

[0023] A T-shaped pin shaft, on which the retaining ring is formed, and the T-shaped pin shaft is used to be inserted into the jack or slot;

[0024] A handle, which is threadedly installed in the T-shaped pin shaft.

[0025] The effect of this solution is that the retaining ring is formed on the T-shaped pin shaft, the structure is simpler, the assembly is convenient, and the bolt component is arranged separately, which is more convenient for processing.

[0026] As a further optimized solution, a limiting groove is provided on the hole wall of the through hole, and a limiting protrusion for circumferentially limiting and blocking cooperation with the limiting groove is provided on the retaining ring.

[0027] The effect of this solution is that through the cooperation of the limiting groove and the limiting protrusion, the bolt component can be prevented from swinging.

[0028] As a further optimized solution, a C-shaped ring extends radially inward on the inner side of the transition conductor. The C-shaped ring has a notch adapted to the shape of the first stop portion, and the second stop portion is provided on the C-shaped ring.

[0029] The effect of this solution is that the notch of the C-shaped ring is adapted to the shape of the first stop portion, and the transition conductor can be inserted into the conductive contact seat appropriately, which is convenient for installation.

[0030] As a further optimized solution, the C-shaped ring includes a first part and a second part adjacent to the notch. The thickness of the first part is less than the interval width between the first stop portion and the bottom wall, and the first part forms the second stop portion; the thickness of the second part is greater than the interval width between the first stop portion and the bottom wall.

[0031] The effect of this solution is that the C-shaped ring includes two parts with uneven thicknesses, and the second stop portion is formed on the thinner part. The operator can only rotate in the direction where the first part is located, thereby guiding the operator's actions.

[0032] As a further optimized solution, an annular finger is provided between the transition conductor and the conductive contact seat, and an insulating plate is press-fitted between the transition conductor and the bottom wall.

[0033] The effect of this solution is that the insulating plate can ensure that the current can only flow through the finger, preventing contact between the end of the transition conductor and the bottom wall, which may cause shunting at this place during the withstand voltage test and affect the test results.

[0034] As a further optimized solution, the base body is installed on the bottom wall through fastening screws, and both the base body and the first stop portion are insulators.

[0035] The effect of this solution is that both the base body and the first stop portion are insulators, preventing current from flowing through the fastening screw, the base body, and the first stop portion to the second stop portion.

[0036] As a further optimized solution, the base body and the first stop portion are integrally formed by a nylon block. Description of the Drawings

[0037] Figure 1 It is a schematic diagram of Embodiment 1 of the bus bar withstand voltage test tooling of the present invention;

[0038] Figure 2 It is Figure 1 an enlarged view of part A in

[0039] Figure 3 It is a side view of the first stop portion in Embodiment 1 of the bus bar withstand voltage test tooling of the present invention;

[0040] Figure 4 It is a position relationship diagram of the first stop portion and the C-shaped ring when the transition conductor does not stop against the conductive contact seat in Embodiment 1 of the bus bar withstand voltage test tooling of the present invention;

[0041] Figure 5 It is a position relationship diagram of the first stop portion and the C-shaped ring when the transition conductor stops against the conductive contact seat in Embodiment 1 of the bus bar withstand voltage test tooling of the present invention;

[0042] In the attached Figure 1 figure: 100 - connecting bus bar; 101 - insulator; 102 - conductive contact seat; 1021 - bottom wall; 103 - connecting bus bar housing; 111 - transition conductor; 200 - bus bar to be tested; 201 - bus bar housing; 202 - bus bar conductor; 300 - finger.

[0043] In the attached Figure 2 figure: 1021 - bottom wall; 104 - base body; 105 - fastening screw; 106 - insulating plate; 107 - T-shaped pin shaft; 108 - first part; 109 - back-tightening nut; 110 - compression spring; 111 - transition conductor; 112 - first stop portion; 113 - retaining ring; 114 - handle; 115 - gasket; 116 - second part; 117 - perforation.

[0044] In the attached Figure 3 figure: 104 - base body; 109 - back-tightening nut; 112 - first stop portion; 118 - limiting groove; 119 - limiting protrusion.

[0045] In the attached Figure 4 figure: 108 - first part; 112 - first stop portion; 114 - handle; 116 - second part; 120 - C-shaped ring; 121 - notch; 122 - jack.

[0046] Attached Figure 5 Among them: 108 - the first part; 112 - the first stop portion; 114 - the handle; 116 - the second part; 121 - the notch. Specific Embodiment

[0047] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Usually, the components of the embodiments of the present invention described and shown in the accompanying drawings herein can be arranged and designed in various different configurations.

[0048] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present invention.

[0049] It should be noted that relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0050] The features and performance of the present invention will be further described in detail below in conjunction with the embodiments.

[0051] Specific Embodiment 1 of the bus bar withstand voltage test tooling of the present invention:

[0052] As Figures 1 to 5 shown, the bus bar withstand voltage test tooling includes a connecting bus bar 100, and the connecting bus bar 100 is connected to a withstand voltage device through structures such as disconnectors. The connecting bus bar 100 includes a connecting bus bar housing 103, and also includes an insulator 101 at one end. There is a metal insert in the insulator 101, and a conductive contact seat 102 is fixedly installed on the metal insert by screws. A transition conductor 111 is installed in the conductive contact seat 102 through a transition conductor installation structure.

[0053] As Figure 1 shown, the conductive contact base 102 is bowl-shaped. The conductive contact base 102 includes a bottom wall 1021 connected to the metal insert by screws. The opening of the conductive contact base 102 faces the bus bar 200 to be measured. The transition conductor 111 is an overall sleeve with a central through-hole. One end is inserted into the conductive contact base 102, and the other end allows the bus bar conductor 202 of the bus bar 200 to pass through. Electrical conduction connection between the transition conductor 111, the conductive contact base 102, and the bus bar conductor 202 is achieved through the contact fingers 300.

[0054] For bus bars 200 of different specifications, the outer diameter dimensions of their bus bar conductors 202 are different. To match them, different specifications of transition conductors 111 need to be replaced. The transition conductor installation structure in this embodiment can achieve the quick disassembly and assembly of different specifications of transition conductors 111 and the conductive contact base 102.

[0055] As Figures 1 to 3 shown, the transition conductor installation structure includes a base body 104 fixed on the bottom wall 1021. The base body 104 is fixedly installed on the bottom wall 1021 through fastening screws 105. Specifically, holes and countersunk holes are made on the base body 104 so that the fastening screws 105 can sink into the base body 104. The number of fastening screws 105 is two to prevent the base body 104 from rotating and misaligning. The transition conductor 111 can be sleeved outside the base body 104. The transition conductor installation structure also includes a first stop portion 112 arranged on the outer edge at one radial end of the base body 104. Among them, the first stop portion 112 is arranged along the radial extension of the conductive contact base 102. Among them, the first stop portion 112 is a radial protrusion integrally formed with the base body 104. In this embodiment, the first stop portion 112 and the base body 104 are integrally processed from an insulating block, specifically a nylon block here.

[0056] As Figure 2 shown, there is a gap between the first stop portion 112 and the bottom wall 1021 in the axial direction of the conductive contact base 102, and this gap can allow the first part 108 to swing and extend in.

[0057] The transition conductor installation structure also includes a second stop portion provided on the transition conductor 111. The second stop portion is arranged on the inner wall of the transition conductor 111 and extends radially inward along the conductive contact base 102. The second stop portion can extend between the first stop portion 112 and the bottom wall 1021 and achieve axial stop cooperation with the first stop portion 112.

[0058] The form of the second stop portion is as Figures 2 to 5As shown, a C-shaped ring 120 is radially and inwardly protruded on the inner wall of the transition conductor 111. The C-shaped ring 120 is integrally formed with the transition conductor 111. The C-shaped ring 120 has a notch 121, and the shape of the notch 121 is adapted to the first stop portion 112. The C-shaped ring 120 includes two parts located on both sides of the notch 121, namely the first part 108 and the second part 116. Among them, the thickness of the first part 108 is less than the thickness of the second part 116, and the thickness of the first part 108 is less than the interval width between the first stop portion 112 and the bottom wall 1021. The first part 108 can be swung in to form a second stop portion. The thickness of the second part 116 is greater than the interval width between the first stop portion 112 and the bottom wall 1021 and cannot be swung in. The purpose of designing the C-shaped ring 120 in this way is to be able to sleeved the transition conductor 111 on the outside of the nylon block in a set posture. Since the second part 116 cannot be swung into the space between the first stop portion 112 and the bottom wall 1021, the transition conductor 111 can only rotate in a set direction.

[0059] After the first stop portion 112 and the first part 108 are axially stopped against each other, it can prevent the axial separation of the transition conductor 111 and the conductive contact base 102. To further prevent the transition conductor 111 from rotating during use, the first stop portion 112 and the first part 108 are disengaged from the stop, resulting in their separation. As Figure 2 shown, a through hole 117 axially penetrating is formed in the first stop portion 112. The through hole 117 is a stepped hole with a stepped surface facing the busbar conductor 202 (i.e., facing Figure 2 the left side direction). A pin member is inserted into the through hole 117. Correspondingly, as Figure 4 and Figure 5 shown, a jack 122 is formed in the first part 108. The jack 122 can be inserted into by the pin member to realize the anti-rotation between the first stop portion 112 and the first part 108.

[0060] The structure of the pin member is specifically as Figure 2As shown, the latch part includes a handle 114 and a pin shaft that are threadedly connected. Here, the pin shaft is a T-shaped pin shaft 107. The end of the handle 114 penetrates into one end where the T-shaped side of the T-shaped pin shaft 107 is located and is threadedly connected. To strengthen the connection between the two, a back-tightening nut 109 is also threadedly sleeved on the handle 114, and the back-tightening nut 109 presses on the T-shaped pin shaft 107. The T-shaped side of the T-shaped pin shaft 107 forms a retaining ring that can press on the stepped surface of the through hole 117 to prevent the T-shaped pin shaft 107 from coming out. To apply a force towards the jack 122 to the T-shaped pin shaft 107, so as to keep the T-shaped pin shaft 107 in the state of being inserted into the jack 122. A compression spring 110 is also arranged in the through hole 117. The compression spring 110 is sleeved outside the handle 114 and the back-tightening nut 109. One end of the compression spring 110 presses against the T-shaped pin shaft 107. A compression spring support is also arranged in the through hole 117 to support the compression spring 110. Here, the compression spring support includes a retaining ring 113 clamped on the hole wall of the through hole 117. A gasket 115 is also arranged between the retaining ring 113 and the compression spring 110. The handle 114 passes through the retaining ring 113 and the gasket 115.

[0061] The latch component can slide back and forth in the through hole 117 and is inserted into the jack 122 under the action of the compression spring 110 when not subject to external force. To prevent the T-shaped pin shaft 107 from swinging circumferentially during use, as Figure 3 shown, a limiting groove 118 is opened on the hole wall of the through hole 117, and a limiting protrusion 119 is opened on the T-shaped pin shaft 107. The limiting protrusion 119 can be adaptively inserted into the limiting groove 118 to achieve circumferential limitation.

[0062] During the test, it is desired that the current between the transition conductor 111 and the conductive contact base 102 only flows through the finger 300, thereby reducing the resistance of the connection between the two. To achieve this purpose, as Figure 3 shown, there is an insulating plate 106 between the transition conductor 111 and the bottom wall 1021. The insulating plate 106 is fixedly pressed between the transition conductor 111 and the bottom wall 1021 by fastening screws 105. In addition, the base body 104 and the first stop portion 112 are formed by processing a non-conductive nylon block, further preventing the current from being transmitted to the transition conductor 111 through the base body 104 and the first stop portion 112.

[0063] When the present invention is in use, as Figure 4 shown, the transition conductor 111 is sleeved outside the base body 104 and the first stop portion 112, and the notch 121 is aligned with the first stop portion 112. Pull the handle 114 to retract the T-shaped pin shaft 107 into the through hole 117, and rotate the transition conductor 111 to Figure 5At this position, the perforation 117 is aligned with the jack 122. Release the handle 114. Under the action of the compression spring 110, the T-shaped pin shaft 107 extends into the jack 122, completing the installation of the complete transition conductor 111 and the conductive contact base 102. The disassembly process is the reverse of the installation process.

[0064] Specific embodiment 2 of the bus bar withstand voltage test tooling of the present invention:

[0065] In Embodiment 1, the base body and the first stop portion are integrally formed. In this embodiment, the base body and the first stop portion can be separately manufactured and fixedly connected, such as by bonding, screw connection, etc. In other embodiments, the materials of the base body and the first stop portion can be changed according to the actual situation. The base body and the first stop portion can also be made of metal. However, in this case, part of the current will conduct through here. This situation can be avoided by applying an insulating coating, etc. Or the transition conductor can include two parts. The part in contact with the finger has a smaller resistance to facilitate current conduction, and the part corresponding to the bottom wall has a larger resistance to avoid current conduction. At this time, the insulating plate between the transition conductor and the conductive finger can be cancelled.

[0066] Specific embodiment 3 of the bus bar withstand voltage test tooling of the present invention:

[0067] In Embodiment 1, a C-shaped ring is provided inside the transition conductor, and the second stop portion is formed on the C-shaped ring. In this embodiment, the thickness of the C-shaped ring is the same everywhere. At this time, whether it rotates forward or backward, the correspondence between the jack and the plug-in component can be achieved.

[0068] Specific embodiment 4 of the bus bar withstand voltage test tooling of the present invention:

[0069] In Embodiment 1, a C-shaped ring is provided inside the transition conductor, and the second stop portion is formed on the C-shaped ring. In this embodiment, the second stop portion is a stop protrusion protruding on the transition conductor, and its circumferential extension length can be reduced as long as it can meet the stop cooperation with the first stop portion.

[0070] Specific embodiment 5 of the bus bar withstand voltage test tooling of the present invention:

[0071] In Embodiment 1, the second stop portion is integrally formed on the transition conductor. In this embodiment, the second stop portion can be fixedly arranged in a split manner, such as by welding, bonding, etc.

[0072] Specific embodiment 6 of the bus bar withstand voltage test tooling of the present invention:

[0073] In Embodiment 1, the retaining ring in the plug-in component is formed on the T-shaped pin shaft. In this embodiment, the T-shaped pin shaft is replaced with a common equal-diameter pin shaft, and the retaining ring is welded separately to the outside of the pin shaft.

[0074] Specific embodiment 7 of the bus bar withstand voltage test tooling of the present invention:

[0075] In Embodiment 1, the compression spring support member includes a retaining ring and a gasket. In this embodiment, the compression spring support member can be a support sleeve that is threadedly assembled or press-fitted into the perforation. The pin member passes through the support sleeve, and one end of the compression spring abuts against the support sleeve.

[0076] Specific Embodiment 8 of the bus bar withstand voltage test tooling of the present invention:

[0077] In Embodiment 1, the pin member includes two separate parts. In this embodiment, the pin member has an integral structure. For example, the pin member only includes one pin, and the pin is slidably assembled in the perforation.

[0078] Specific Embodiment 9 of the bus bar withstand voltage test tooling of the present invention:

[0079] In Embodiment 1, by providing a compression spring to apply an elastic force to the pin member, the pin member is prevented from coming out. In this embodiment, when the outer diameter of the pin member is the same as the inner diameter of the perforation and the pin member is not easily disengaged from the perforation, the compression spring can be cancelled. After the compression spring is cancelled, structures such as the stepped surface and retaining ring corresponding to the compression spring can also be cancelled.

[0080] Specific Embodiment 10 of the bus bar withstand voltage test tooling of the present invention:

[0081] In Embodiment 1, the second stop portion is provided with a jack. In this embodiment, a slot can be provided on the second stop portion for the pin member to be inserted. Specifically, the slot can be a through slot that axially penetrates the second stop portion, and the through slot has a notch on the outer edge of the second stop portion.

[0082] The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention is subject to the claims. All equivalent structural changes made by using the description and drawings of the present invention should be included in the protection scope of the present invention by the same token.

Claims

1. A bus bar withstand voltage test tooling, comprising: A connecting bus bar, including an insulator for installing the bus bar housing of the bus bar to be tested; A conductive contact seat fixed on a metal insert on the insulator; A transition conductor inserted into the conductive contact seat and electrically connected to the conductive contact seat. The transition conductor is used to be inserted and sleeved with the bus bar conductor of the bus bar to be tested, and the transition conductor can rotate relative to the conductive contact seat; It is characterized in that: The bus bar withstand voltage test tooling further includes a transition conductor installation structure for installing the transition conductor on the conductive contact seat; The transition conductor installation structure includes: A base fixed on the bottom wall of the conductive contact seat, and the transition conductor is sleeved outside the base; A first stop portion and a second stop portion. The first stop portion is arranged on the base and extends radially outwards. The first stop portion and the bottom wall of the conductive contact seat are arranged at intervals along the axial direction of the conductive contact seat; The second stop portion is arranged on the transition conductor and extends radially inwards. The second stop portion can be placed between the first stop portion and the conductive contact seat as the transition conductor rotates, and axially stops and cooperates with the first stop portion; A pin component is axially movably inserted through the first stop portion. A jack or a slot is provided on the second stop portion. When the second stop portion is placed between the first stop portion and the conductive contact seat as the transition conductor rotates, the pin component is inserted into the jack or the slot to prevent the relative rotation between the transition conductor and the conductive contact seat.

2. The busbar withstand voltage test tooling according to claim 1, wherein: The transition conductor installation structure further includes a compression spring that applies an elastic force to the pin component to drive the pin component to insert into the jack or the slot.

3. The busbar withstand voltage test tooling according to claim 2, wherein: A through hole for the pin component to penetrate is provided in the first stop portion. The through hole is a stepped hole, and the stepped hole has a step surface facing the bus bar conductor; The pin component includes a retaining ring for axially stopping and cooperating with the step surface; The transition conductor installation structure further includes a compression spring support member fixed on the through hole, and the pin component passes through the compression spring support member; The compression spring is elastically pressed between the retaining ring and the compression spring support member.

4. The busbar withstand voltage test tooling according to claim 3, wherein: The pin component includes: A T-shaped pin shaft, on which the retaining ring is formed, and the T-shaped pin shaft is used to be inserted into the jack or the slot; A handle threadedly inserted into the T-shaped pin shaft.

5. The busbar withstand voltage test tooling according to claim 3 or 4, characterized in that: A limiting groove is provided on the inner wall of the through hole, and a limiting protrusion for circumferentially limiting and stopping cooperation with the limiting groove is provided on the retaining ring.

6. The busbar withstand voltage test tooling according to any one of claims 1-4, characterized in that: A C-shaped ring extends radially inwards on the inner side of the transition conductor. The C-shaped ring has a notch adapted to the shape of the first stop portion.

7. The busbar withstand voltage test tooling according to claim 6, characterized in that: The C-shaped ring includes a first part and a second part adjacent to the notch. The thickness of the first part is less than the interval width between the first stop portion and the bottom wall, and the first part forms the second stop portion; the thickness of the second part is greater than the interval width between the first stop portion and the bottom wall.

8. The busbar withstand voltage test tooling according to any one of claims 1-4, characterized in that: An annular finger is provided between the transition conductor and the conductive contact seat, and an insulating plate is elastically pressed between the transition conductor and the bottom wall.

9. The busbar withstand voltage test tooling according to claim 8, characterized in that: The base is installed on the bottom wall through a fastening screw, and both the base and the first stop portion are insulators.

10. The busbar withstand voltage test tooling according to claim 9, characterized in that: The base and the first stop portion are integrally formed by a nylon block.

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