Current transformer detection device and method

Abstract

The invention provides a current transformer detection device and method, and belongs to the technical field of transformer detection, the current transformer detection device comprises a mounting body, a movable body capable of being movably adjusted is arranged in the mounting body, and one end of the moving body in the moving direction is provided with a first mounting groove and a second mounting groove; an iron core is installed in the first installation groove, a battery is installed in the second installation groove, a wire is wound on the iron core, the two ends of the wire are connected with the battery respectively, and a switch is connected to the wire. A plurality of moving bodies are arranged, and the plurality of moving bodies are arranged at intervals; the mounting body is fixedly connected with a circuit board; the moving body, the iron core and the battery are positioned between the mounting body and the circuit board; the two ends of the moving body in the moving direction are each provided with a positioning guide hole for a wire to penetrate through, and the two positioning guide holes are coaxially formed. According to the current transformer detection device provided by the invention, the detection operation on the transformer is relatively rapid, the detection accuracy is relatively high, and the operation efficiency of equipment is not influenced.

Description

Technical Field

[0001] This invention belongs to the field of current transformer detection technology, and more specifically, relates to a current transformer detection device and method. Background Technology

[0002] In today's field of electrical automation, frequency converters, as important power control devices, are widely used in various industrial production scenarios. The stable operation of frequency converters is crucial for ensuring the continuity and efficiency of production. Among the components, current transformers play an indispensable role in frequency converters. They accurately detect the magnitude of AC / DC current and convert the current value into a voltage signal, which is then transmitted to the frequency converter's main control board. The main control board uses this voltage signal to control the frequency converter's output and determine whether the output current is normal. Typically, a frequency converter is equipped with multiple current transformers to meet the detection needs of different circuits.

[0003] However, these current transformers are prone to damage during use. Due to their complex operating environment, they are susceptible to various factors such as electrical interference, temperature changes, and mechanical vibration. When a current transformer fails, it can severely impact the normal operation of the frequency converter. Currently, there are many challenges in the fault detection and replacement of current transformers. Conventional testing methods are insufficient to accurately determine the condition of a current transformer and identify which specific current transformer is faulty. Blindly replacing multiple current transformers would significantly increase maintenance costs. On the other hand, replacing each component individually for testing would be time-consuming, greatly extending the fault diagnosis time and severely impacting equipment operating efficiency. Therefore, there is an urgent need for an effective current transformer testing device and method to solve these problems. Summary of the Invention

[0004] The purpose of this invention is to provide a current transformer detection device and method to solve the technical problem in the prior art that the damage of the current transformer cannot be accurately determined, which affects the operating efficiency.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A current transformer detection device is provided, comprising a mounting body, wherein a movable and adjustable moving body is provided within the mounting body, and a current transformer is fixedly connected to the moving body; one end of the moving body in the direction of movement is provided with a first mounting groove and a second mounting groove; an iron core is installed in the first mounting groove, and a battery is installed in the second mounting groove; a wire is wound around the iron core, and both ends of the wire are respectively connected to the battery, and a switch is connected to the wire; multiple moving bodies are provided, and the multiple moving bodies are arranged at intervals; a circuit board is fixedly connected to the mounting body, and the moving body, the iron core, and the battery are located between the mounting body and the circuit board; positioning guide holes for wires to pass through are provided at both ends in the direction of movement of the moving body, and two positioning guide holes are coaxially arranged.

[0006] In one possible implementation, the mounting body is provided with a slide groove, the movable body is slidably connected in the slide groove, the bottom of the slide groove is provided with a through groove, the through groove is provided along the moving direction of the movable body, the movable body is provided with a connecting post connected to the through groove, the connecting post extends to the back of the mounting body, and a fastening nut is threaded onto the connecting post.

[0007] In one possible implementation, the current transformer has two measurement connection pins.

[0008] In one possible implementation, the circuit board is provided with a measuring slot corresponding to the measuring connection pin, and the measuring slot is arranged along the moving direction of the moving body.

[0009] In one possible implementation, a metal contact piece is provided on the inner sidewall of the measuring groove, the measuring connecting foot extends into the measuring groove, and the measuring connecting foot is electrically connected to the metal contact piece.

[0010] In one possible implementation, the metal contact piece is annular or elongated, and metal contact posts are provided at both ends of the metal contact piece along its length.

[0011] In one possible implementation, the measuring connection foot makes elastic contact with the metal contact piece.

[0012] In one possible implementation, the switch is located on the back of the mounting body.

[0013] In one possible implementation, the first mounting slot is located between the second mounting slot and the movable body.

[0014] The beneficial effects of the current transformer testing device provided by this invention are as follows: Compared with the prior art, when testing a current transformer, the current transformer testing device of this invention energizes the wires on the iron core, making the iron core magnetic. The transformer moves towards the iron core, and a multimeter is used to measure the two measuring pins simultaneously. If the transformer is not damaged, its induced current will change linearly; otherwise, the transformer is damaged. It can test individual transformers separately, and the testing is convenient and simple to operate. This method of transformer testing is fast, accurate, and will not affect the normal operation of the equipment.

[0015] Another objective of this invention is to provide a current transformer detection method, including the aforementioned current transformer detection device. When the transformer needs to be tested, the switch is turned on, the wires on the iron core are energized, and the iron core becomes magnetic. Then, the fastening nut is loosened by rotating, and the moving body is driven to move through the connecting post, so that the transformer approaches the magnetic iron core. At the same time, a multimeter is used to measure the two measuring connection pins. If the transformer is not damaged, its induced current will change linearly; otherwise, the transformer is damaged.

[0016] The current transformer detection method provided by this invention uses a current transformer detection device, which makes the detection operation of the transformer relatively quick, with high detection accuracy, short time consumption, and significantly reduced fault judgment time, without affecting the operating efficiency of the equipment. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the current transformer detection device provided in an embodiment of the present invention; Figure 2 A schematic diagram of the disassembled circuit board provided in an embodiment of the present invention. Figure 1 ; Figure 3 for Figure 1 Enlarged view of point A in the middle; Figure 4 A schematic diagram of the disassembled circuit board provided in an embodiment of the present invention. Figure 2 ; Figure 5 A schematic diagram of the disassembly of the current transformer provided in the embodiments of the present invention. Figure 1 ; Figure 6 A schematic diagram of the disassembly of the current transformer provided in the embodiments of the present invention. Figure 2 ; Figure 7 This is a schematic diagram of the connection between the metal contact piece and the measuring connection pin provided in an embodiment of the present invention; The following are the labeling elements in the figure: 1. Mounting body; 11. Slide groove; 12. Through groove; 13. Connecting column; 14. Tighten the nuts; 15. Measure the connecting pins; 16. Measuring groove; 17. Metal contact piece; 18. Metal contact post; 2. Moving body; 3. Current transformer; 4. First mounting slot; 5. Second mounting slot; 6. Iron core; 7. Battery; 8. Switch; 9. Circuit board; 10. Positioning guide hole. Detailed Implementation

[0019] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0020] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0021] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] For reference as follows Figures 1-7 The present invention will be described as follows: Example: A current transformer detection device includes a mounting body 1, which is a plastic shell-like structure. The device mainly comprises the mounting body 1, which is made of plastic and has a shell-like structure. This plastic material has good insulation properties, effectively preventing electrical interference and ensuring the stable operation of the detection device.

[0024] The mounting body 1 contains movable and adjustable moving bodies 2. The mounting body 1 has a sliding groove 11 within it. The moving bodies 2 are slidably connected to and restrained by the sliding groove 11, preventing them from detaching. Multiple moving bodies 2 are arranged at intervals, and multiple corresponding sliding grooves 11 are also provided. The mounting body 1 contains movable and adjustable moving bodies 2. To ensure the stability and accuracy of the moving bodies 2 during movement, the mounting body 1 has a sliding groove 11. The moving bodies 2 are slidably connected to the sliding groove 11, and the sliding groove 11 restrains the moving bodies 2, preventing them from detaching during movement. Multiple moving bodies 2 are arranged at intervals, and multiple corresponding sliding grooves 11 are provided. This design allows for the simultaneous testing of multiple current transformers 3, improving testing efficiency. Alternatively, individual current transformers 3 can be tested separately.

[0025] The movable body 2 has a U-shaped structure, and a current transformer 3 is fixedly connected to it. The current transformer 3 can be adjusted in position using the movable body 2. The movable body 2 is made of plastic, and this structural design provides high stability and reliability. The current transformer 3, fixedly connected to the movable body 2, can be adjusted in position using the movable body 2. This design allows the current transformer 3 to be adjusted in position according to actual needs, facilitating the detection of current at different locations.

[0026] A first mounting groove 4 and a second mounting groove 5 are provided at one end of the moving body 2 in the direction of movement. The first mounting groove 4 is located between the second mounting groove 5 and the moving body 2.

[0027] An iron core 6 is installed in the first mounting slot 4, and a battery 7 is installed in the second mounting slot 5. A wire is wound around the iron core 6, and the two ends of the wire are connected to the battery 7 respectively. A switch 8 is connected to the wire. When the switch 8 is turned on, the wire is energized and the iron core 6 becomes magnetic.

[0028] A first mounting slot 4 and a second mounting slot 5 are provided at one end of the moving body 2 in the direction of movement. The first mounting slot 4 is located between the second mounting slot 5 and the moving body 2. An iron core 6 is installed in the first mounting slot 4, and the iron core 6 is an important component of the detection device. A battery 7 is installed in the second mounting slot 5 to provide power to the detection device. Wires are wound around the iron core 6, and the two ends of the wires are connected to the battery 7. A switch 8 is connected to the wires. When the switch 8 is turned on, the wires are energized, and the iron core 6 becomes magnetic.

[0029] When testing the current transformer 3, first turn on switch 8 to energize the wires on the iron core 6, thus making the iron core 6 magnetic. Under the influence of magnetism, the current transformer 3 will move towards the iron core 6. Simultaneously, use a multimeter to measure the two measuring pins 15 on the current transformer 3. If the current transformer 3 is not damaged, its induced current will change linearly; conversely, if the induced current does not change linearly, it indicates that the current transformer 3 is damaged.

[0030] This current transformer testing device has the following advantages: First, it can test multiple current transformers 3 simultaneously, improving testing efficiency, and it can also test a single current transformer 3 individually. Second, the design of the moving body 2 allows the current transformer 3 to be repositioned, facilitating current testing at different locations. Third, the magnetism of the iron core 6 is used to attract the current transformer 3, making the testing process more accurate and reliable. In summary, this testing device provides an effective solution for fault detection and maintenance of current transformers 3.

[0031] It also includes a circuit board 9 fixedly connected to the mounting body 1, with the movable body 2, iron core 6, and battery 7 located between the mounting body 1 and the circuit board 9. The circuit board 9 plays a crucial role in the entire device, enabling the integration and control of various electronic components.

[0032] The moving part 2, the iron core 6, and the battery 7 are all located between the mounting body 1 and the circuit board 9. This layout design has several advantages. On the one hand, the mounting body 1 and the circuit board 9 provide good protection for the moving part 2, the iron core 6, and the battery 7, preventing them from being interfered with or damaged by the external environment. On the other hand, this compact layout makes the entire detection device more stable, occupies less space, and is easier to install and use.

[0033] The movable body 2 can slide more smoothly in the slide groove 11 within the space between the mounting body 1 and the circuit board 9, thereby adjusting the position of the current transformer 3. The iron core 6 and the battery 7 also function stably within this space. The battery 7 provides a continuous power supply to the entire detection device, ensuring that when the current transformer 3 needs to be tested, the wires on the iron core 6 can be energized in a timely manner, causing them to become magnetic. After being energized, the iron core 6 can effectively attract the current transformer 3, providing the necessary conditions for the detection process.

[0034] Circuit board 9 manages and controls the power supply to battery 7, ensuring a stable power output. Simultaneously, circuit board 9 can connect to current transformer 3, receiving, analyzing, and processing the signals transmitted by current transformer 3. Through the processing by circuit board 9, it is possible to more accurately determine whether current transformer 3 is damaged, improving the accuracy and reliability of the detection.

[0035] In summary, the mounting body 1, the circuit board 9, and the moving body 2, the iron core 6, and the battery 7 located between them together constitute a complete and efficient current transformer detection device, providing strong support for fault detection and maintenance of electrical equipment.

[0036] The moving body 2 has positioning guide holes 10 at both ends of its moving direction for wires to pass through, and the positioning guide holes 10 at both ends of the moving body 2 are coaxially arranged. The wires passing through the current transformer 3 pass through the two positioning guide holes 10, keeping the wires in a straight line, corresponding to the linear movement of the moving body 2. In this way, the moving body 2 will not pull on the wires during the movement.

[0037] In this current transformer detection device, positioning guide holes 10 for wires to pass through are provided at both ends of the moving body 2 in the direction of movement. These two positioning guide holes 10 are coaxially arranged to ensure that the passing wires can remain in a straight line.

[0038] The wires passing through the current transformer 3 and the two positioning guide holes 10 play a crucial role. First, they ensure that the wires remain in a straight line. When the moving body 2 moves in a straight line, the wires are kept straight and constrained by the positioning guide holes 10, preventing the moving body 2 from pulling on the wires during movement. This effectively protects the wires, preventing damage from being pulled by the movement of the moving body 2, and ensuring the stability and reliability of the electrical connection.

[0039] In practical applications, the stability of the power line is crucial for the normal operation of the current transformer 3. If the power line is pulled during movement, it may cause problems such as wire breakage or poor contact, thereby affecting the detection accuracy of the current transformer 3 and the reliability of the entire detection device. By setting the positioning guide hole 10, the movement of the power line can be coordinated with the movement of the moving body 2, ensuring the stable operation of the system.

[0040] Furthermore, the coaxially arranged positioning guide hole 10 facilitates installation and maintenance. When installing wires, it is easier to pass them through the positioning guide hole 10, ensuring accurate positioning. During maintenance, if it is necessary to inspect or replace the wires, this can also be easily done through the positioning guide hole 10, improving maintenance efficiency.

[0041] In summary, the positioning guide holes 10 at both ends of the moving body 2 provide a stable channel for the wires, ensuring that the moving body 2 will not pull on the wires during movement. This is an important design element in the current transformer detection device.

[0042] The bottom of the slide groove 11 is provided with a through groove 12, which is arranged along the moving direction of the moving body 2. The moving body 2 is provided with a connecting post 13 connected to the through groove 12. The connecting post 13 extends to the back of the mounting body 1, and a fastening nut 14 is threaded onto the connecting post 13. When the fastening nut 14 is tightened, the moving body 2 and the mounting body 1 form a fixed connection. When it is necessary to move the moving body 2, the fastening nut 14 is loosened, and the moving body 2 can then be moved.

[0043] The bottom of the slide 11 is provided with a through groove 12. The through groove 12 is arranged along the moving direction of the moving body 2, and this design provides an important structural basis for the position adjustment of the moving body 2.

[0044] The movable body 2 is provided with a connecting post 13 that connects to the through slot 12. The connecting post 13 extends to the back of the mounting body 1, serving to connect and fix the movable body 2. A fastening nut 14 is threaded onto the connecting post 13. When the fastening nut 14 is tightened, the movable body 2 and the mounting body 1 are fixedly connected. This fixed connection method ensures that the movable body 2 can be stably positioned in a specific location when it does not need to be moved, thus guaranteeing the detection accuracy and stability of the current transformer 3.

[0045] When it is necessary to move the movable body 2, simply loosen the fastening nut 14. At this time, the movable body 2 is no longer fixedly connected to the mounting body 1, and can thus move freely in the slide groove 11. This adjustable design allows users to flexibly adjust the position of the movable body 2 according to actual testing needs, and thus adjust the position of the current transformer 3, so as to better detect the current at different locations.

[0046] This design, which uses the fastening nut 14 and connecting post 13 to fix and move the movable body 2, has the advantages of simple operation and high reliability. Users can easily fix and move the movable body 2 by tightening or loosening the fastening nut 14, without the need for complicated tools and operating procedures. At the same time, this design also ensures the stability and accuracy of the movable body 2 during movement, avoiding detection errors caused by improper movement.

[0047] In summary, the through groove 12 at the bottom of the slide 11, the connecting post 13 on the moving body 2, and the fastening nut 14 together constitute a flexible and reliable position adjustment system for the moving body 2, which facilitates the detection of the current transformer 3.

[0048] The current transformer 3 is equipped with two measuring connection pins 15. A multimeter is connected to the two measuring connection pins 15 to realize the testing of the current transformer 3.

[0049] These two measuring connection pins 15 are key components for enabling the detection of the current transformer 3.

[0050] When testing current transformer 3 is required, connect a multimeter to the two measuring pins 15. A multimeter, as a commonly used electronic measuring instrument, can accurately measure electrical parameters such as current, voltage, and resistance. By connecting the multimeter to the measuring pins 15 of current transformer 3, various electrical characteristics of current transformer 3 can be measured, thereby determining whether current transformer 3 is operating normally.

[0051] Specifically, during the testing process, when the wires on the iron core 6 are energized, making the iron core 6 magnetic, the current transformer 3 will move towards the iron core 6. At this time, the electrical parameters between the two measuring connection pins 15 on the current transformer 3 are measured using a multimeter. If the current transformer 3 is not damaged, its induced current will change linearly, and the parameters measured by the multimeter will change accordingly. Conversely, if the current transformer 3 is damaged, the parameters measured by the multimeter may be abnormal, such as unstable current or abnormal resistance values.

[0052] This method of testing current transformer 3 by connecting a multimeter to the measuring connection pin 15 has the advantages of simple operation and high accuracy. Users only need to correctly connect the multimeter to the measuring connection pin 15 to perform quick and accurate testing. Furthermore, this method is applicable to different types of current transformers 3, demonstrating high versatility.

[0053] In summary, the two measuring connection pins 15 on the current transformer 3 provide a connection interface for the multimeter, making the testing of the current transformer 3 more convenient and accurate.

[0054] The switch 8 is located on the back of the mounting body 1, on the same side as the fastening nut 14, for easy operation.

[0055] The circuit board 9 has a measuring slot 16 corresponding to the measuring connection pin 15, and the measuring slot 16 is arranged along the moving direction of the moving body 2. Since the current transformer 3 is located inside the circuit board 9, the measuring slot 16 is provided so that the measuring connection pin 15 can be exposed, and the multimeter is connected to the measuring connection pin 15 through the measuring slot 16.

[0056] These two measuring connection pins 15 are key components for enabling the detection of the current transformer 3.

[0057] When testing current transformer 3 is required, connect a multimeter to the two measuring pins 15. A multimeter, as a commonly used electronic measuring instrument, can accurately measure electrical parameters such as current, voltage, and resistance. By connecting the multimeter to the measuring pins 15 of current transformer 3, various electrical characteristics of current transformer 3 can be measured, thereby determining whether current transformer 3 is operating normally.

[0058] Specifically, during the testing process, when the wires on the iron core 6 are energized, making the iron core 6 magnetic, the current transformer 3 will move towards the iron core 6. At this time, the electrical parameters between the two measuring connection pins 15 on the current transformer 3 are measured using a multimeter. If the current transformer 3 is not damaged, its induced current will change linearly, and the parameters measured by the multimeter will change accordingly. Conversely, if the current transformer 3 is damaged, the parameters measured by the multimeter may be abnormal, such as unstable current or abnormal resistance values.

[0059] This method of testing current transformer 3 by connecting a multimeter to the measuring connection pin 15 has the advantages of simple operation and high accuracy. Users only need to correctly connect the multimeter to the measuring connection pin 15 to perform quick and accurate testing. Furthermore, this method is applicable to different types of current transformers 3, demonstrating high versatility.

[0060] In summary, the two measuring connection pins 15 on the current transformer 3 provide a connection interface for the multimeter, making the testing of the current transformer 3 more convenient and accurate.

[0061] A metal contact piece 17 is provided on the inner wall of the measuring slot 16. A measuring connection foot 15 extends into the measuring slot 16 and is electrically connected to the metal contact piece 17. The metal contact piece 17 is elongated, with metal contact posts 18 at both ends along its length. The measuring connection foot 15 makes elastic contact with the metal contact piece 17. The electrical connection between the metal contact piece 17 and the measuring connection foot 15 allows the multimeter to test the current transformer 3 by detecting the metal contact piece 17. Simultaneously, the metal contact posts 18 can also serve as the power connection pins of the current transformer 3.

[0062] When testing is performed, the measuring connection pin 15 on the current transformer 3 extends into the measuring slot 16 and makes an electrical connection with the metal contact piece 17.

[0063] The metal contact piece 17 is designed in a ring or elongated shape, which has specific advantages. The elongated metal contact piece 17 has metal contact posts 18 at both ends along its length. The measuring connection pin 15 makes elastic contact with the metal contact piece 17, ensuring the stability and reliability of the connection. Even under certain external interference or vibration, the measuring connection pin 15 can always maintain a good electrical connection with the metal contact piece 17.

[0064] After the metal contact 17 is electrically connected to the measuring connection pin 15, the multimeter can test the current transformer 3 by testing the metal contact 17. This design makes the testing process more convenient and efficient. The multimeter does not need to perform a complicated connection operation directly with the measuring connection pin 15; it can obtain the electrical parameters of the current transformer 3 simply by contacting the metal contact 17.

[0065] Meanwhile, the metal contact post 18 can also serve as a power connection pin for the current transformer 3, further expanding its functionality. In practical applications, the metal contact post 18 can be easily connected to external circuits to provide power to the current transformer 3 or transmit signals. This multifunctional design improves the practicality and flexibility of the entire detection device.

[0066] In summary, the design of the metal contact piece 17 and the metal contact post 18 within the measuring slot 16 provides a reliable solution for the testing and connection of the current transformer 3. They not only ensure the stability and accuracy of the electrical connection but also make the testing process simpler and more efficient, providing a strong guarantee for the normal operation of the current transformer testing device.

[0067] A current transformer testing method includes the aforementioned testing device. When testing the current transformer 3, switch 8 is turned on, energizing the wires on the iron core 6, making the iron core 6 magnetic. Then, the loosening locking nut is rotated, and the moving body 2 is moved through the connecting post 13, bringing the current transformer 3 close to the magnetic iron core 6. At the same time, a multimeter is used to measure the two measuring connection pins 15. If the current transformer 3 is not damaged, its induced current will change linearly; otherwise, the current transformer 3 is damaged.

[0068] When testing the current transformer 3, switch 8 is first turned on. This energizes the wires on the iron core 6, causing it to quickly become magnetic. This operation injects crucial energy into the testing process, laying the foundation for subsequent testing steps. Next, the loosening nut is rotated. This step removes the fixed restriction on the moving body 2, allowing it to move freely. Then, the moving body 2 is driven to move via the connecting post 13. The connecting post 13 plays a crucial transmission role here, transmitting external operating force to the moving body 2, enabling it to move precisely towards the target position. During this movement, the current transformer 3 approaches the magnetic iron core 6. This process requires precise control of the distance and speed of movement to ensure testing accuracy.

[0069] Meanwhile, a multimeter is used to measure the two measuring pins 15. As a high-precision measuring tool, the multimeter can accurately capture changes in the electrical parameters of the current transformer 3. If the current transformer 3 is not damaged, its induced current will change linearly as it approaches the magnetic core 6. This linear change is an important indicator of the normal operation of the current transformer 3, showing that it can accurately sense changes in the magnetic field and generate corresponding current changes. Conversely, if the induced current does not change linearly during the test, then the current transformer 3 can be determined to be damaged.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A current transformer detection device, characterized by, The utility model provides a kind of movable transformer, including installation body (1), the mobile body (2) of being arranged in the installation body (1) is movably adjusted, mutual inductor (3) is used for fixedly connected on the mobile body (2);The first installation slot (4) and the second installation slot (5) are equipped in the moving direction of the mobile body (2) one end;Iron core (6) is installed in the first installation slot (4), battery (7) is installed in the second installation slot (5), the wire is wound on the iron core (6), the wire is connected with the battery (7) respectively at both ends, and switch (8) is connected on the wire;The mobile body (2) is equipped with multiple, and multiple mobile body (2) is arranged at intervals;The installation body (1) is fixedly connected with circuit board (9), and the mobile body (2), the iron core (6), the battery (7) are located between the installation body (1) and the circuit board (9);The both ends of the moving direction of the mobile body (2) are equipped with the positioning guide hole (10) for wire to pass through, and the positioning guide hole (10) coaxially is arranged.

2. The current transformer detection device of claim 1, wherein, The installation body (1) is equipped with sliding slot (11), and the mobile body (2) is slidably connected in the sliding slot (11), and the bottom of the sliding slot (11) is equipped with through groove (12), and the through groove (12) is arranged along the moving direction of the mobile body (2), and the connecting column (13) is equipped on the mobile body (2) and is connected with the through groove (12), and the connecting column (13) extends to the back of the installation body (1), and the fastening nut (14) is threadedly connected on the connecting column (13).

3. The current transformer detection device of claim 2, wherein, The mutual inductor (3) is equipped with two measurement connecting feet (15).

4. The current transformer detection device of claim 3, wherein, The circuit board (9) is equipped with the measurement slot (16) corresponding with the measurement connecting foot (15), and the measurement slot (16) is arranged along the moving direction of the mobile body (2).

5. The current transformer detection device of claim 4, wherein, The inner side wall of the measurement slot (16) is equipped with metal contact sheet (17), the measurement connecting foot (15) extends into the measurement slot (16), and the measurement connecting foot (15) is electrically connected with the metal contact sheet (17).

6. The current transformer detection device of claim 5, wherein, The metal contact sheet (17) is annular, the metal contact sheet (17) is long strip, and the both ends of the length direction of the metal contact sheet (17) are equipped with metal contact column (18) respectively.

7. The current transformer detection device of claim 5, wherein, The measurement connecting foot (15) is elastically contacted with the metal contact sheet (17).

8. The current transformer detection device of claim 1, wherein, The switch (8) is located on the back of the installation body (1).

9. The current transformer detection device of claim 1, wherein, The first installation slot (4) is located between the second installation slot (5) and the mobile body (2).

10. A current transformer detection device method characterized by, The current transformer detection device comprises the current transformer detection device as claimed in any one of claims 3-7, when the current transformer (3) needs to be detected, the switch (8) is opened, the wire on the iron core (6) is electrified, the iron core (6) has magnetism; the fastening nut is loosened and rotated, the moving body (2) is driven to move through the connecting column (13), the current transformer (3) approaches the iron core (6) with magnetism, and the two measurement connecting feet (15) are measured by using a universal meter; if the current transformer (3) is not damaged, the induced current linearly changes, otherwise, the current transformer (3) is damaged.

Images