Universal test module for testing current transformer

Abstract

The invention relates to the technical field of electronic component testing, in particular to a universal testing module for testing a current transformer, which comprises a fixing bracket, a jig positioning assembly, a jig assembly, a testing fixing assembly and a testing driving assembly, and is characterized in that the jig positioning assembly is arranged on the fixing bracket, the jig assembly is arranged on the jig positioning assembly, and the testing fixing assembly is arranged on the testing driving assembly; the test fixing assembly is used for fixing the jig assembly on the jig positioning assembly, and is used for fixing the jig assembly on the jig positioning assembly; the jig assembly comprises a jig main body and a connecting conductor, a sub-jig is arranged on the jig main body and used for fixing the current transformer, the connecting conductor comprises a positive electrode conductor and a negative electrode conductor, and the positive electrode conductor and the negative electrode conductor are arranged on the two sides of the jig main body respectively. The efficiency, the universality, the reliability and the automation level of the current transformer testing link are improved, and good technical value and application prospects are achieved.

Description

Technical Field

[0001] This invention relates to the field of electronic component testing technology, and in particular to a universal test module for testing current transformers. Background Technology

[0002] In the mass production and quality inspection of current transformers, frequent automated testing of their electrical performance across multiple models and in large quantities is required. Existing testing equipment generally suffers from insufficient versatility and efficiency: for current transformers of different dimensions and terminal specifications, testing often necessitates changing to corresponding specialized test fixtures or even the entire tooling platform, resulting in long changeover times, low equipment utilization, and high costs for purchasing and maintaining various specialized fixtures. Regarding test connection methods, most still rely on manual wiring or semi-automatic clamping by operators, which is not only inefficient and unable to meet production line pace, but also prone to introducing variables such as inconsistent contact resistance and unstable connections due to variations in the force and position of manual operation, affecting measurement accuracy and repeatability. Furthermore, manual operation also presents problems such as high labor intensity and electrical safety risks. Therefore, the industry urgently needs a universal testing platform that can quickly accommodate multiple product models and automate and standardize the electrical connection process to improve testing efficiency, accuracy, production line flexibility, and reduce overall testing costs. Summary of the Invention

[0003] To address the aforementioned issues, this invention improves the efficiency, versatility, reliability, and automation level of current transformer testing, presenting a universal testing module for current transformers with significant technical value and application prospects.

[0004] The technical solution adopted in this invention is: a universal test module for current transformer testing, including a fixed bracket, a fixture positioning component, a fixture assembly, a test fixing component, and a test driving component. The fixture positioning component is disposed on the fixed bracket, and the fixture assembly is disposed on the fixture positioning component and positioned by the fixture positioning component. The test fixing component is used to fix the fixture assembly on the fixture positioning component. The fixture assembly includes a fixture body and a connecting conductor. A sub-fixture is disposed on the fixture body for fixing the current transformer. The connecting conductor includes a positive conductor and a negative conductor, which are respectively disposed on both sides of the fixture body. Two sets of test driving components are disposed and located on both sides of the fixture body. The two sets of test driving components correspond to the positive conductor and the negative conductor, respectively, for driving the positive conductor and the negative conductor to contact the sub-fixture.

[0005] A further improvement to the above solution is that the fixed bracket includes a fixed base plate, a supporting connecting column, and a fixed top plate, wherein the fixed base plate is connected to the fixed top plate through the supporting connecting column.

[0006] A further improvement to the above solution is that the fixture positioning assembly includes a positioning base plate, a positioning mounting block, and a contact conductive block. The positioning base plate is disposed on the upper surface of the fixed top plate, the positioning mounting block is disposed on the side of the positioning base plate, and two contact conductive blocks are disposed on the two sides of the positioning base plate respectively. The positioning mounting block is used for positioning the contact conductive block during installation, and the two contact conductive blocks are respectively used for conductive connection of the positive conductor and the negative conductor.

[0007] A further improvement to the above solution is that two positioning conductive blocks are provided at the bottom of the fixture body, and the two positioning conductive blocks are respectively used to connect the positive conductor and the negative conductor; the two positioning conductive blocks are in contact with the two contact conductive blocks.

[0008] A further improvement to the above scheme is that the contact conductive block is provided with a trapezoidal protrusion, and the positioning conductive block is provided with a trapezoidal groove, wherein the trapezoidal groove matches the trapezoidal protrusion.

[0009] A further improvement to the above solution is that the test fixing components are provided in two sets, each set corresponding to a contact conductive block. Each test fixing component includes a clamping drive module and a clamping pull rod. The clamping drive module is mounted on a fixed bracket, and the clamping pull rod is mounted on the drive end of the clamping drive module. The clamping drive module is used to drive the clamping pull rod to press the fixture body toward the contact conductive block, so that the positioning conductive block and the contact conductive block remain in contact.

[0010] A further improvement to the above solution is that the fixture body is provided with a test fixing groove and a conductive positioning groove. The fixture body is set in the test fixing groove, and there are two conductive positioning grooves, which are respectively located on both sides of the fixture body and communicate with the test fixing groove. The positive electrode conductor and the negative electrode conductor are respectively set in the two conductive positioning grooves.

[0011] A further improvement to the above scheme is that the middle section of the conductive positioning groove is provided with an elastic fixing part, and the elastic fixing part is provided with a reset spring. The reset spring is used to reset the connecting conductor. The test drive assembly includes a test drive cylinder and a test drive shaft. The test drive cylinder is used to drive the test drive shaft to push the connecting conductor to slide in the conductive positioning groove and contact the sub-fixture. When the test is completed, the test drive cylinder drives the test drive shaft to reset, and the connecting conductor separates from the sub-fixture under the action of the reset spring.

[0012] A further improvement to the above solution is that the fixture body is provided with a fixing cover plate, which is used to confine the connecting conductor within the conductive positioning groove; the fixing cover plate is provided with an assembly buckle groove; a clamping component is provided on the upper side of the fixture body, which is used to clamp and fix the product on the sub-fixture, and assembly buckles are provided on both sides of the clamping component to cooperate with the assembly buckle groove.

[0013] A further improvement to the above scheme is that multiple sub-fixtures are provided, and the multiple sub-fixtures are continuously arranged along the length direction of the test fixing groove. A conductive connecting block is provided between two adjacent sub-fixtures, and a floating spring is provided between the conductive connecting blocks. When the positive conductor and the negative conductor come into contact with the sub-fixture, the adjacent sub-fixtures are connected through the conductive connecting block.

[0014] A further improvement to the above solution is that the sub-fixture is provided with a product positioning groove, and the clamping component is provided with an elastic pressure block for pressing and fixing the product in the product positioning groove.

[0015] The beneficial effects of this invention are: Compared to existing current transformer testing methods, this invention integrates a fixed bracket, fixture positioning components, fixture components, test fixing components, and test drive components, constructing a highly integrated and rapidly replaceable test platform. The coordinated design of the fixture positioning components and fixture components enables rapid and precise positioning and clamping of fixtures or current transformers of different specifications. By changing the fixture body equipped with different specifications of sub-fixtures, various models of current transformers can be quickly adapted, greatly expanding the applicability of a single test platform. This solves the pain points of existing technologies, such as the need for dedicated tooling for different products, cumbersome changeovers, and low equipment utilization, significantly reducing test preparation time and hardware costs. The design of this invention, where the connecting conductors (positive and negative conductors) are located on both sides of the fixture body and correspond one-to-one with the test drive components on both sides, achieves precise, independent driving and control of electrical contact. This ensures stable and reliable contact between the test probes or connectors and the current transformer terminals, effectively reducing test errors or data fluctuations caused by poor contact. Meanwhile, the design of the drive component automates the electrical connection establishment process, replacing traditional manual wiring. This not only improves testing efficiency but also reduces the uncertainty of human operation, ensuring the consistency of the testing process and the repeatability of results, thus facilitating automated batch testing. Through the aforementioned structural innovations, this invention effectively improves the efficiency, versatility, reliability, and automation level of current transformer testing, demonstrating significant technical value and application prospects. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the universal test module for current transformer testing according to the present invention; Figure 2 for Figure 1 Exploded view of a general test module for medium current transformer testing; Figure 3 for Figure 1 Front view schematic diagram of a general test module for medium current transformer testing; Figure 4 for Figure 1 Exploded view of a general test module for medium current transformer testing; Figure 5 for Figure 4 Enlarged diagram of point A in the diagram; Figure 6 for Figure 4 Enlarged diagram of point B in the image.

[0017] Explanation of reference numerals in the attached drawings: Fixed bracket 1, Fixed base plate 11, Support connecting column 12, Fixed top plate 13, Fixture positioning assembly 2, Positioning base plate 21, Positioning mounting block 22, Contact conductive block 23, Trapezoidal protrusion 231, Fixture assembly 3, Fixture body 31, Positioning conductive block 311, Trapezoidal groove 312, Test fixing groove 313, Conductive positioning groove 314, Elastic fixing part 315, Reset spring 316, Connecting conductor 32, Positive conductor 321, Negative conductor 322, Sub-fixture 33, Conductive connecting block 331, Floating spring 332, Product positioning groove 333, Test fixing assembly 4, Pressing drive module 41, Pressing pull rod 42, Test drive assembly 5, Test drive cylinder 51, Test drive shaft 52, Fixed cover plate 6, Assembly buckle groove 61, Pressing assembly 7, Assembly buckle 71, Elastic pressure block 72. Detailed Implementation

[0018] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0019] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0021] like Figures 1-6 As shown, in one embodiment of the present invention, a universal test module for testing current transformers is provided, including a fixed bracket 1, a fixture positioning component 2, a fixture assembly 3, a test fixing component 4, and a test driving component 5. The fixture positioning component 2 is disposed on the fixed bracket 1, and the fixture assembly 3 is disposed on the fixture positioning component 2 and positioned by the fixture positioning component 2. The test fixing component 4 is used to fix the fixture assembly 3 on the fixture positioning component 2. The fixture assembly 3 includes a fixture body 31 and a connecting conductor 32. A sub-fixture 33 is disposed on the fixture body 31 for fixing the current transformer. The connecting conductor 32 includes a positive conductor 321 and a negative conductor 322, which are respectively disposed on both sides of the fixture body 31. Two sets of test driving components 5 are provided and are respectively located on both sides of the fixture body 31. The two sets of test driving components 5 correspond to the positive conductor 321 and the negative conductor 322, respectively, for driving the positive conductor 321 and the negative conductor 322 to contact the sub-fixture 33. This embodiment integrates a fixed bracket 1, a fixture positioning component 2, a fixture component 3, a test fixing component 4, and a test drive component 5, constructing a highly integrated and quickly replaceable test platform. The cooperative design of the fixture positioning component 2 and fixture component 3 enables rapid and precise positioning and clamping of fixtures or current transformers of different specifications. By replacing the fixture body 31 with different specifications of sub-fixtures 33, various models of current transformers can be quickly adapted, greatly expanding the applicability of a single test platform. This solves the pain points of existing technologies, such as the need for dedicated tooling for different products, cumbersome changeovers, and low equipment utilization, significantly reducing test preparation time and hardware costs. In this embodiment, the connecting conductors 32 (positive and negative conductors 322) are respectively located on both sides of the fixture body 31, corresponding one-to-one with the test drive components 5 on both sides, achieving precise, independent driving and control of electrical contact. This ensures stable and reliable contact between the test probe or connector and the current transformer terminals, effectively reducing test errors or data fluctuations caused by poor contact. Meanwhile, the drive component's design automates the electrical connection establishment process, replacing traditional manual wiring. This not only improves testing efficiency but also reduces the uncertainty of human operation, ensuring consistency and repeatability of the testing process and facilitating automated batch testing. Through the aforementioned structural innovations, this embodiment effectively improves the efficiency, versatility, reliability, and automation level of current transformer testing, demonstrating significant technical value and application prospects.

[0022] The fixed bracket 1 includes a fixed base plate 11, a supporting connecting column 12, and a fixed top plate 13. The fixed base plate 11 is connected to the fixed top plate 13 via the supporting connecting column 12. Specifically, the fixture positioning assembly 2 includes a positioning base plate 21, a positioning mounting block 22, and a contact conductive block 23. The positioning base plate 21 is disposed on the upper surface of the fixed top plate 13, the positioning mounting block 22 is disposed on the side of the positioning base plate 21, and two contact conductive blocks 23 are provided, respectively disposed on both sides of the positioning base plate 21. The positioning mounting block 22 is used for positioning the contact conductive blocks 23, and the two contact conductive blocks 23 are respectively used for conductive connection between the positive conductor 321 and the negative conductor 322. In this embodiment, the fixed base plate 11, the supporting connecting column 12, and the fixed top plate 13 form a stable support frame, providing a rigid and vibration-resistant mechanical foundation to ensure structural stability during testing. The positioning base plate 21, positioning mounting block 22, and two contact conductive blocks 23 of the fixture positioning component 2 achieve precise positioning and installation of the fixture body 31, and also construct a standardized power supply interface module. The two contact conductive blocks 23, located on either side of the positioning base plate 21, correspond to the positive and negative terminals respectively, integrating and fixing the input / output interface of the test current with the mechanical positioning structure. This avoids cumbersome and error-prone wiring operations on-site.

[0023] Two positioning conductive blocks 311 are provided at the bottom of the fixture body 31. These two positioning conductive blocks 311 are used to connect the positive conductor 321 and the negative conductor 322, respectively; the two positioning conductive blocks 311 are in contact with the two contact conductive blocks 23. This embodiment specifies two positioning conductive blocks 311 at the bottom of the fixture body 31, which are respectively connected to the positive conductor 321 and the negative conductor 322, and are in contact with the two contact conductive blocks 23 on the positioning assembly. The electrical connection path is modularized and standardized, forming a clear correspondence between the positioning conductive blocks 311 and the contact conductive blocks 23. When different specifications of the fixture body 31 are replaced, its built-in positioning conductive blocks 311 contact the contact conductive blocks 23 fixed on the platform through a plane or a preset structure, automatically completing the electrical path connection. This eliminates the step of manually connecting test leads for different products, achieving automated and error-free electrical connections.

[0024] The contact conductive block 23 is provided with a trapezoidal protrusion 231, and the positioning conductive block 311 is provided with a trapezoidal groove 312, which matches the trapezoidal protrusion 231. In this embodiment, a matching structure of trapezoidal protrusion 231 and trapezoidal groove 312 is adopted. The trapezoidal cross section has automatic centering and guiding functions. When the fixture body 31 is placed on the positioning component, the inclined surface of the trapezoidal protrusion 231 and the groove can guide the two to quickly and accurately align, effectively compensating for minor deviations caused by manufacturing tolerances or repeated placement, and ensuring the positional repeatability accuracy of the electrical contact point.

[0025] Two sets of test fixing components 4 are provided, each corresponding to a contact conductive block 23. Each test fixing component 4 includes a clamping drive module 41 and a clamping pull rod 42. The clamping drive module 41 is mounted on the fixing bracket 1, and the clamping pull rod 42 is located at the drive end of the clamping drive module 41. The clamping drive module 41 drives the clamping pull rod 42 to press the fixture body 31 towards the contact conductive block 23, ensuring that the positioning conductive block 311 and the contact conductive block 23 remain in contact. The function of this embodiment is to achieve automatic clamping, ensuring that the positioning conductive block 311 and the contact conductive block 23 maintain tight and reliable contact during testing. The clamping drive module 41 (such as a cylinder, motor, etc.) provides active and controllable clamping force, pressing the fixture body 31 as a whole towards the contact conductive block 23 via the clamping pull rod 42. This solves the problems of poor contact, intermittent connection, or vibration-induced loosening that may occur if gravity or manual locking is relied upon alone. Especially during dynamic or long-term reliability testing, the active clamping mechanism can maintain constant contact pressure, thereby ensuring the stability and accuracy of test data.

[0026] The fixture body 31 is provided with a test fixing groove 313 and a conductive positioning groove 314. The fixture body 31 is disposed within the test fixing groove 313. Two conductive positioning grooves 314 are provided, located on both sides of the fixture body 31 and communicating with the test fixing groove 313. The positive conductor 321 and the negative conductor 322 are respectively disposed in the two conductive positioning grooves 314. In this embodiment, the test fixing groove 313 is used to accommodate and fix the sub-fixture 33 of the current transformer under test, realizing functional partitioning. The two conductive positioning grooves 314 are respectively disposed on both sides of the test fixing groove 313 and communicating with the test fixing groove 313, providing a precise guide and installation path for connecting conductors 32 (positive conductor 321 and negative conductor 322). This ensures that the relative relationship between the electrical connection point (the contact position between the conductor and the sub-fixture 33) and the mechanical fixing position (test fixing groove 313) is strictly determined structurally, avoiding connection point position drift caused by assembly or use. This ensures that the current accurately enters and exits the product under test through the set path during each test, improving the repeatability and consistency of the test.

[0027] An elastic fixing part 315 is provided in the middle section of the conductive positioning groove 314. The elastic fixing part 315 is equipped with a return spring 316, which is used to reset the connecting conductor 32. The test drive assembly 5 includes a test drive cylinder 51 and a test drive shaft 52. The test drive cylinder 51 drives the test drive shaft 52 to push the connecting conductor 32 to slide within the conductive positioning groove 314 and contact the sub-fixture 33. After the test is completed, the test drive cylinder 51 drives the test drive shaft 52 to reset, and the connecting conductor 32 separates from the sub-fixture 33 under the action of the return spring 316. In this embodiment, an elastic fixing part 315 with a return spring 316 is provided within the conductive positioning groove 314. Combined with the test drive assembly 5 composed of the test drive cylinder 51 and the drive shaft, a "active contact, automatic reset" working mode is achieved. During testing, the cylinder drive shaft pushes the connecting conductor 32 forward, ensuring reliable contact with the sub-fixture 33 and forming a test circuit. After the test, the cylinder retracts, and the connecting conductor 32 automatically disengages from the sub-gig 33 and returns to its initial position under the action of the return spring 316. This avoids wear, deformation, or overheating and adhesion problems caused by long-term contact of the test probe or conductor, effectively extending the service life of the core test component (conductor). At the same time, the separated state also facilitates the handling and replacement of the product.

[0028] The fixture body 31 is provided with a fixing cover plate 6, which is used to confine the connecting conductor 32 within the conductive positioning groove 314. The fixing cover plate 6 is provided with an assembly latch groove 61. A clamping assembly 7 is provided on the upper side of the fixture body 31, which is used to clamp and fix the product on the sub-fixture 33. Assembly latches 71 are provided on both sides of the clamping assembly 7 to cooperate with the assembly latch groove 61. In this embodiment, the fixing cover plate 6 is used to confine the connecting conductor 32 within the conductive positioning groove 314, preventing it from popping out due to vibration or misoperation, thus improving the safety and operational stability of the equipment. The assembly latch groove 61 on it cooperates with the assembly latches 71 on both sides of the clamping assembly 7 to form a quick installation and positioning structure. The main function of the clamping assembly 7 is to stably clamp and fix the current transformer product in the product positioning groove of the sub-fixture 33 from above during testing, preventing product displacement due to poor contact or external force. The snap-fit ​​design allows for tool-free installation and removal of the clamping component 7, making the operation quick and efficient. This significantly reduces the time required for fixture preparation and product changeover, while ensuring consistent positional accuracy and force for each clamping operation.

[0029] Multiple sub-fixtures 33 are provided, arranged continuously along the length of the test fixing groove 313. A conductive connecting block 331 is provided between adjacent sub-fixtures 33, and a floating spring 332 is provided between each conductive connecting block 331. When the positive conductor 321 and the negative conductor 322 contact the sub-fixture 33, adjacent sub-fixtures 33 are connected through the conductive connecting block 331. This embodiment achieves the simultaneous installation of multiple products under test by continuously arranging multiple sub-fixtures 33 along the length of the test fixing groove 313 in the fixture body 31 and providing a floating connection structure connected by conductive connecting blocks 331 and floating springs 332. When the positive and negative conductors 322 contact the first and last sub-fixtures 33 at their respective ends, the floating connection structure allows current to be stably transmitted between adjacent sub-fixtures 33 through the conductive connecting blocks 331, thereby enabling batch and simultaneous testing of all series-connected products. It improves the test throughput and is particularly suitable for the production testing of large batches of small-sized current transformers. Compared with single tests, the test efficiency is increased several times, and the overall structure is compact and occupies little space.

[0030] The sub-fixture 33 is provided with a product positioning groove 333, and the clamping assembly 7 is provided with an elastic pressure block 72 for clamping and fixing the product within the product positioning groove 333. In this embodiment, the sub-fixture 33 is provided with a specific product positioning groove 333, providing precise initial positioning for the current transformer under test and ensuring accurate alignment of the product with the conductor contact terminals. The clamping assembly 7 is equipped with an elastic pressure block 72 (such as a spring-loaded pressure head), whose function is to adapt to the slight height tolerances that may exist between different products during batch clamping, ensuring that each product is subjected to a moderate and uniform clamping force, and avoiding situations where individual products are not clamped or are damaged due to excessive force.

[0031] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A universal test module for testing current transformers, characterized in that: The device includes a fixed bracket, a fixture positioning component, a fixture assembly, a test fixing component, and a test driving component. The fixture positioning component is mounted on the fixed bracket, and the fixture assembly is mounted on the fixture positioning component and positioned by the fixture positioning component. The test fixing component is used to fix the fixture assembly on the fixture positioning component. The fixture assembly includes a fixture body and connecting conductors. A sub-fixture is provided on the fixture body for fixing a current transformer. The connecting conductor includes a positive conductor and a negative conductor, which are respectively located on both sides of the fixture body. Two sets of test driving components are provided, located on both sides of the fixture body. The two sets of test driving components correspond to the positive conductor and the negative conductor, respectively, to drive the positive conductor and the negative conductor to contact the sub-fixture.

2. The universal test module for current transformer testing according to claim 1, characterized in that: The fixed bracket includes a fixed base plate, a supporting connecting column, and a fixed top plate, wherein the fixed base plate is connected to the fixed top plate through the supporting connecting column; The fixture positioning assembly includes a positioning base plate, a positioning mounting block, and a contact conductive block. The positioning base plate is disposed on the upper surface of the fixed top plate, the positioning mounting block is disposed on the side of the positioning base plate, and two contact conductive blocks are disposed on the two sides of the positioning base plate respectively. The positioning mounting block is used for positioning the contact conductive block during installation, and the two contact conductive blocks are respectively used for conductive connection of the positive conductor and the negative conductor.

3. The universal test module for current transformer testing according to claim 2, characterized in that: The bottom of the fixture body is provided with two positioning conductive blocks, which are used to connect the positive conductor and the negative conductor respectively; the two positioning conductive blocks are in contact with the two contact conductive blocks.

4. The universal test module for current transformer testing according to claim 3, characterized in that: The contact conductive block is provided with a trapezoidal protrusion, and the positioning conductive block is provided with a trapezoidal groove, the trapezoidal groove matching the trapezoidal protrusion.

5. The universal test module for current transformer testing according to claim 4, characterized in that: The test fixing assembly is provided in two sets, and the two sets of test fixing assemblies are respectively corresponding to the contact conductive block. The test fixing assembly includes a clamping drive module and a clamping pull rod. The clamping drive module is mounted on the fixed bracket, and the clamping pull rod is mounted on the drive end of the clamping drive module. The clamping drive module is used to drive the clamping pull rod to press the fixture body toward the contact conductive block, so that the positioning conductive block and the contact conductive block are kept in contact.

6. The universal test module for current transformer testing according to claim 1, characterized in that: The fixture body is provided with a test fixing groove and a conductive positioning groove. The fixture body is set in the test fixing groove. There are two conductive positioning grooves, which are located on both sides of the fixture body and are connected to the test fixing groove. The positive electrode conductor and the negative electrode conductor are respectively set in the two conductive positioning grooves.

7. The universal test module for current transformer testing according to claim 6, characterized in that: The conductive positioning groove has an elastic fixing part in the middle section, and the elastic fixing part has a return spring. The return spring is used to reset the connecting conductor. The test drive assembly includes a test drive cylinder and a test drive shaft. The test drive cylinder is used to drive the test drive shaft to push the connecting conductor to slide in the conductive positioning groove and contact the sub-fixture. When the test is completed, the test drive cylinder drives the test drive shaft to reset, and the connecting conductor separates from the sub-fixture under the action of the return spring.

8. The universal test module for current transformer testing according to claim 7, characterized in that: The fixture body is provided with a fixing cover plate, which is used to confine the connecting conductor within the conductive positioning groove; the fixing cover plate is provided with an assembly buckle groove; a clamping component is provided on the upper side of the fixture body, which is used to clamp and fix the product on the sub-fixture, and assembly buckles are provided on both sides of the clamping component to cooperate with the assembly buckle groove.

9. The universal test module for current transformer testing according to claim 8, characterized in that: Multiple sub-fixtures are provided, and the multiple sub-fixtures are arranged continuously along the length direction of the test fixing groove. A conductive connecting block is provided between two adjacent sub-fixtures, and a floating spring is provided between the conductive connecting blocks. When the positive conductor and the negative conductor come into contact with the sub-fixture, the adjacent sub-fixtures are connected through the conductive connecting block.

10. The universal test module for current transformer testing according to claim 9, characterized in that: The sub-fixture is provided with a product positioning groove, and the clamping component is provided with an elastic pressure block for pressing and fixing the product in the product positioning groove.

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