Current transformer

Abstract

The invention relates to the technical field of current detection, and particularly discloses a current transformer which comprises a framework, a coil winding, a magnetic core assembly and a guide piece, a through hole in the framework extends in the first direction, a winding groove is formed in the framework, the coil winding is arranged in the winding groove, the magnetic core assembly is connected with the framework, the magnetic core assembly is arranged in the circumferential direction of the framework, and the guide piece is connected with the coil winding. The magnetic core assembly partially penetrates through the through hole, the guide pieces extend in the circumferential direction of the coil winding, connecting structures connected with the framework are arranged on the two sides of the guide pieces, and the guide pieces can be supported away from the surface of the coil winding through the connecting structures, so that the guide pieces can be distributed in the circumferential direction of the coil winding and keep a certain preset distance. The whole size of the current transformer can be reduced, the two sides of the guide vane are erected and supported on the framework through the connecting structures, and the situation that the distance between the guide vane and the coil winding is reduced and even the guide vane directly stamps the coil winding to scratch the coil winding due to the fact that the guide vane is deviated and inclined during assembly can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of current detection, and in particular to a current transformer. Background Art

[0002] A current transformer is a device used in power systems to measure electronic circuits and protect power systems. Its main function is to convert high current into low current to facilitate the use of measurement and protection equipment.

[0003] In the related art, the current transformer includes an iron core, a primary winding and a secondary winding. The primary winding and the secondary winding are mostly insulated and separated by films such as tape. However, the shielding effect of the film is limited and it is easy to be damaged. In addition, the corners of the coil are not tightly shielded, which can easily cause a short circuit between the primary winding and the secondary winding under high voltage conditions, thereby inducing high voltage in the circuit of the secondary winding, which will endanger the safety of people and equipment. Summary of the invention

[0004] The object of the present invention is to provide a current transformer to solve the problem in the related art that the primary winding and the secondary winding are prone to short circuit and high voltage occurs at the induction point.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] The present invention provides a current transformer, which comprises:

[0007] A frame, wherein a through hole is provided in the frame, and the through hole is extended along a first direction, and a winding groove is provided on the frame, and the winding groove is arranged along the circumference of the through hole;

[0008] A coil winding, wherein the coil winding is arranged in the winding slot;

[0009] A magnetic core component, the magnetic core component is connected to the skeleton, the magnetic core component is arranged in the circumference of the skeleton, and the magnetic core component is partially inserted into the through hole;

[0010] A guide piece, the guide piece is extended along the circumferential direction of the coil winding, and the guide piece is arranged between the coil winding and the magnetic core component. Connecting structures are arranged on both sides of the guide piece, and the connecting structures are connected to the skeleton. The connecting structures can support the guide piece from the surface of the coil winding.

[0011] In one embodiment, the connection structure includes:

[0012] A support portion, the support portion is connected to the guide piece, the support portion is extended along the first direction, and the support portion is covered on the top of the frame;

[0013] A limiting portion, wherein the limiting portion is connected to the supporting portion and is arranged vertically along the first direction, and the limiting portion is blocked on the side wall of the frame.

[0014] In one embodiment, the magnetic core assembly includes a first core body and a second core body that are detachably connected, and the first core body and the second core body are respectively arranged at two ends of the through hole.

[0015] In one embodiment, the first core body and the second core body each include a bottom plate, a middle column and side columns whose ends are connected to the bottom plate, the middle column of the first core body and the middle column of the second core body are inserted into the through hole and connected, and the side columns of the first core body and the side columns of the second core body are arranged on the side of the frame and connected.

[0016] In one of the embodiments, the magnetic core assembly further includes a clamping member, which is disposed on the outside of the first core body and the second core body, and is configured to provide a clamping force to a connection position of the first core body and the second core body.

[0017] In one embodiment, the clamping member is an annular sheet structure, and the annular sheet structure is sleeved on the circumference of the first core body and the second core body. The annular sheet structure is provided with a fracture, and the fracture is located at the position of the bottom plate.

[0018] In one embodiment, support structures are provided on both sides of the skeleton, and the support structures are extended vertically along the first direction. The top of the support structure supports the magnetic core assembly from the bottom surface of the skeleton, and the side of the support structure is provided with pins for electrical connection, and the pins are electrically connected to the coil winding.

[0019] In one embodiment, the guide piece has a first electrical connection end and a second electrical connection end, and the first electrical connection end and the second electrical connection end are respectively arranged on two sides of the connection structure.

[0020] In one embodiment, the support structure extends out of the side wall of the frame along the first direction, the guide plate is arranged between two support structures, and the first electrical connection end and the second electrical connection end can extend outward from the bottom of the magnetic core component.

[0021] In one of the embodiments, an insulating member is disposed in the winding groove, the insulating member is disposed between the coil winding and the guide piece, and the insulating member covers the entire surface of the coil winding.

[0022] The beneficial effects of the present invention are:

[0023] The present invention provides a current transformer, which adopts a conductor structure as a primary side winding, and can support the conductor away from the surface of the coil winding by using the connection structure on both sides of the conductor, so that the conductor can be arranged in the circumference of the coil winding and maintain a certain preset spacing, which can reduce the overall volume of the current transformer, and the conductor is supported on the skeleton by the connection structure on both sides, which can avoid the situation that the distance between the conductor and the coil winding is reduced due to the deviation and distortion of the conductor assembly, or even the conductor directly pokes the coil winding and scratches the coil winding, so that there is a good insulation effect between the conductor and the coil winding, and the situation that the primary side winding and the secondary side winding are prone to short circuit under high voltage is reduced, and the high voltage is avoided in the line of the secondary side winding, thereby ensuring the safety of people and equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the overall structure of a current transformer in an embodiment of the present invention;

[0025] Figure 2 is a top view of a current transformer in an embodiment of the present invention;

[0026] Figure 3 is a longitudinal cross-sectional view of a current transformer in an embodiment of the present invention;

[0027] Figure 4 Schematic diagram of the structure of the guide plate in the embodiment of the present invention;

[0028] Figure 5 It is a schematic diagram of the structure of the first core and the second core in an embodiment of the present invention;

[0029] Figure 6 It is a schematic diagram of the structure of the skeleton in an embodiment of the present invention;

[0030] Figure 7 FIG. 4 is another longitudinal cross-sectional view of the current transformer in the embodiment of the present invention.

[0031] In the figure:

[0032] 1. Skeleton; 11. Through hole; 12. Winding groove; 13. Support structure; 14. Pin;

[0033] 2. Coil winding;

[0034] 3. Magnetic core assembly; 31. First core body; 32. Second core body; 33. Bottom plate; 34. Middle column; 35. Side column; 36. Clamping piece; 361. Fracture;

[0035] 4. guide piece; 41. connection structure; 411. support part; 412. limit part; 42. first electrical connection end; 43. second electrical connection end;

[0036] 5. Insulation parts. DETAILED DESCRIPTION

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0038] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0040] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0041] like Figures 1 to 3As shown, the X direction in the figure is a schematic diagram of the first direction. An embodiment of the present invention provides a current transformer, which includes a skeleton 1, a coil winding 2, a magnetic core assembly 3 and a guide plate 4. A through hole 11 is provided in the skeleton 1, and the through hole 11 is extended along the first direction. A winding groove 12 is provided on the skeleton 1, and the winding groove 12 is arranged along the circumference of the through hole 11. The coil winding 2 is arranged in the winding groove 12, and the magnetic core assembly 3 is connected to the skeleton 1. The magnetic core assembly 3 is arranged in the circumference of the skeleton 1, and the magnetic core assembly 3 is partially penetrated in the through hole 11, that is, the magnetic core assembly 3 is penetrated on the skeleton 1 along the first direction, and the coil winding 2 can be wound on the magnetic core assembly 3 by being wound in the winding groove 12 of the skeleton 1, as a secondary side winding.

[0042] The guide piece 4 is extended along the circumferential direction of the coil winding 2, and is arranged between the coil winding 2 and the magnetic core assembly 3, so that the guide piece 4 is wound on the assembly to form a primary side winding, and connecting structures 41 are arranged on both sides of the guide piece 4, and the connecting structure 41 is connected to the skeleton 1, and the connecting structure 41 can support the guide piece 4 from the surface of the coil winding 2.

[0043] On the basis of the insulation structure of the coil winding 2 itself, the present embodiment adopts the guide piece 4 structure as the primary side winding, and the connecting structure 41 on both sides of the guide piece 4 can be supported by the skeleton 1 to separate the guide piece 4 from the surface of the coil winding 2, so that the guide piece 4 can be arranged in the circumference of the coil winding 2 and maintain a certain preset spacing, which can reduce the overall volume of the current transformer. Figure 3 The g shown in the figure is a schematic diagram of the preset distance between the guide piece 4 and the coil winding 2, and g is greater than zero. Moreover, the two sides of the guide piece 4 are supported on the frame through the connection structure, which can avoid the situation that the distance between the guide piece 4 and the coil winding 2 is reduced due to the deviation and skewness of the guide piece 4 assembly, or even the guide piece 4 directly pokes the coil winding 2 and scratches the coil winding 2, so that there is a good insulation effect between the guide piece 4 and the coil winding 2, reducing the situation that the primary side winding and the secondary side winding are prone to short circuit under high voltage, avoiding the induction of high voltage in the circuit of the secondary side winding, ensuring the safety of people and equipment, and solving the problem that the primary side winding and the secondary side winding are prone to short circuit and high voltage induction in the related technology.

[0044] In this embodiment, the shape of the skeleton 1 can be, but is not limited to, a rectangular parallelepiped, a cube or a multi-prism structure, and can be selected according to actual needs. The first direction can be the length direction or the axial direction of the skeleton 1. The coil winding 2 is formed by winding a coil having an insulating wrapping layer such as an enameled wire. The guide plate 4 is a long sheet structure, and the guide plate 4 is a non-insulating material that can conduct electricity. The guide plate 4 can be in contact with the magnetic core assembly 3 and connected to the ground. The conductor of the coil winding 2 can be, but is not limited to, a single strand or multiple strands, and the cross-sectional shape of the conductor can be, but is not limited to, a flat sheet or a circle, and the material of the conductor can be, but is not limited to, copper, aluminum or silver. The surface of the coil winding 2 is retracted into the notch of the winding slot 12, and there is a sufficient safety distance between the coil winding 2 and the guide plate 4.

[0045] like Figures 1 to 4 As shown, in some embodiments, the connection structure 41 includes a support portion 411 and a limiting portion 412, the support portion 411 is connected to the guide piece 4, and the support portion 411 is extended along the first direction, and the support portion 411 is covered on the top of the frame 1, and the limiting portion 412 can be separated from the guide piece 4 in the first direction, so that the guide piece 4 can be mounted above the winding groove 12 to reduce the contact between the guide piece 4 and the frame 1, and reduce the position interference. The limiting portion 412 is connected to the support portion 411, and the limiting portion 412 is vertically arranged along the first direction, and the limiting portion 412 is blocked on the side wall of the frame 1, so that during the assembly operation, the assembly position of the guide piece 4 and the frame 1 is limited, and the movement of the guide piece 4 relative to the frame 1 after assembly is reduced, and the guide piece 4 is prevented from shifting, sinking or tilting and contacting the coil winding 2, thereby controlling the distance between the guide piece 4 and the coil winding 2.

[0046] In this embodiment, the limiting portion 412 and the supporting portion 411 can both be sheet-like structures or rod-like structures. Each connection structure 41 can be provided with one or more limiting portions 412. Multiple limiting portions 412 are connected to the supporting portion 411. Multiple limiting portions 412 can be set on the side wall of the skeleton 1, or some limiting portions 412 are set on the side wall of the skeleton 1, and other limiting portions 412 are set at the position of the winding groove 12. The same connection structure 41 can limit the guide plate 4 in both positive and negative directions in the first direction, further reducing the movement of the guide plate 4 and the skeleton 1, and improving the assembly position accuracy of the guide plate 4 and the skeleton 1. The side wall of the limiting portion 412 can be abutted against the side wall of the skeleton 1, or a certain gap can be set to facilitate the installation and disassembly of the connection structure 41 and the skeleton 1. Figure 3 The f shown in the figure is a schematic diagram of the gap between the side wall of the limiting portion 412 and the side wall of the frame 1. f may be greater than zero. Of course, in order to improve the limiting accuracy, f may also be equal to zero. It can be set according to actual needs.

[0047] In addition, in addition to assembling and positioning the frame 1 and the guide piece 4 through the limiting portion 412, the connection structure 41 may also be provided with a detachable fixing structure such as an adhesive, a clamping member or a bolt on the limiting portion 412 or the supporting portion 411 to further limit the guide piece 4 and the frame 1, improve the connection stability, and maintain the distance between the guide piece 4 and the coil winding 2. The cross-sectional shape of the limiting portion 412 may be, but is not limited to, square, circular, arc or V-shaped, and may also be other irregular shapes, as long as the guide piece 4 and the frame 1 can be limited and mounted.

[0048] like Figures 1 to 3 As shown, in some embodiments, the magnetic core assembly 3 includes a first core body 31 and a second core body 32 that are detachably connected, and the first core body 31 and the second core body 32 are respectively arranged at two ends of the through hole 11. During assembly, the coil winding 2 can be wound on the skeleton 1. After the guide plate 4 is connected to the skeleton 1, the first core body 31 and the second core body 32 can be inserted into the through hole 11 for connection and fixation, thereby reducing the position interference between the magnetic core assembly 3 and the skeleton 1 and facilitating assembly.

[0049] like Figures 5 and 6 As shown, specifically, the first core body 31 and the second core body 32 each include a bottom plate 33, a middle column 34 and a side column 35 whose ends are connected to the bottom plate 33. The middle column 34 of the first core body 31 and the middle column 34 of the second core body 32 are inserted into the through hole 11 and connected to each other, and the side columns 35 of the first core body 31 and the side columns 35 of the second core body 32 are arranged on the side of the skeleton 1 and connected to each other, that is, the first core body 31 and the second core body 32 can be connected to the skeleton 1 through the middle columns 34 of the two for erection and fixation, and the middle column 34 is inserted into the inner side of the coil winding 2, and the first core body 31 and the second core body 32 can be surrounded by the outer circumference of the coil winding 2 through the side columns 35 and the bottom plate 33 of the two, which can ensure the magnetic flux density and improve the sensitivity of the current transformer.

[0050] In this embodiment, two side columns 35 may be provided in the first core body 31 and the second core body 32 . The two side columns 35 may be provided on both sides of the middle column 34 and both are connected to the bottom plate 33 .

[0051] like Figures 1 to 3 As shown, in some embodiments, the magnetic core assembly 3 also includes a clamping member 36, which is arranged on the outside of the first core body 31 and the second core body 32, and the clamping member 36 is configured to provide a clamping force to the connection position of the first core body 31 and the second core body 32, that is, after the first core body 31 and the second core body 32 are connected, the clamping member 36 can be sleeved or clamped on both sides or circumferentially of the first core body 31 and the second core body 32 combination to clamp the first core body 31 and the second core body 32, so as to avoid the first core body 31 and the second core body 32 from being separated or shifted from each other, thereby improving the assembly accuracy and connection stability of the first core body 31 and the second core body 32.

[0052] like Figures 1 to 3 As shown, in some embodiments, the clamping member 36 is an annular sheet structure, which is sleeved on the circumference of the first core 31 and the second core 32. The annular sheet structure can form a good sleeve wrapping for the first core 31 and the second core 32. A fracture 361 is provided on the annular sheet structure, which can provide a certain deformation space for the annular sheet structure, so as to facilitate the assembly and disassembly of the annular sheet structure with the first core 31 and the second core 32. The fracture 361 is located at the position of the bottom plate 33 to avoid the connection position between the first core 31 and the second core 32, so that the annular sheet structure can cover the connection position between the first core 31 and the second core 32 and form a strong clamping effect on the connection position, so as to avoid the overlap of the fracture 361 with the connection position of the first core 31 and the second core 32, so that the first core 31 and the second core 32 are easily separated by force.

[0053] In this embodiment, the height of the clamping member 36 can be equal to or less than the height of the first core 31 and the second core 32, so as to reduce the contact between the clamping member 36 and other components. The material of the clamping member 36 can be, but is not limited to, metal or plastic, such as steel or acrylic. Among them, the annular sheet structure can also be provided with an inwardly concave arc segment, the inwardly concave arc segment and the fracture 361 are arranged opposite to each other on the annular sheet structure, and the convex top of the inwardly concave arc segment is in contact with the base of the first core 31 or the second core 32, so as to improve the clamping force of the annular sheet structure on the first core 31 and the second core 32.

[0054] like Figure 6 to Figure 7 As shown, in some embodiments, support structures 13 are provided on both sides of the skeleton 1, and the support structures 13 are provided along the vertical extension of the first direction, such as Figure 7 The h shown in the figure is a schematic diagram of the distance that the support structure extends outward relative to the surface of the second core body 32, and h is greater than zero. The top of the support structure 13 supports the magnetic core component 3 from the bottom surface of the skeleton 1, and the side of the support structure 13 is provided with a pin 14 for electrical connection, and the pin 14 is electrically connected to the coil winding 2. The support structure 13 has a certain height. In this embodiment, the magnetic core component 3 can be supported from the pin 14 through the support structure 13, and the magnetic core component 3 is set and limited through the top of the support structure 13 to prevent the magnetic core component 3 from moving vertically relative to the skeleton 1 and the coil winding 2, thereby improving the insulation effect between the magnetic core component 3 and the pin 14 and avoiding short circuit.

[0055] Among them, the skeleton 1 and the support structure 13 can both be made of insulating materials to ensure the insulation effect of the guide plate 4 and the coil. The support structure 13 can be a long block structure, and the number of pins 14 can be multiple, and the multiple pins 14 can be arranged along the length direction of the support structure 13, and the ends of the multiple pins 14 can be located on the same plane for easy connection. The end of the coil winding 2 can be wound on the pin 14, so as to be electrically connected to the pin 14. The cross-sectional shape of the support structure 13 can be, but is not limited to, square, circular, arc or V-shaped, and can also be other irregular shapes, as long as it can support the magnetic core assembly 3.

[0056] like Figures 1 to 4 As shown, in some embodiments, the guide piece 4 has a first electrical connection terminal 42 and a second electrical connection terminal 43, and the first electrical connection terminal 42 and the second electrical connection terminal 43 are respectively arranged on both sides of the connection structure 41. The connection structure 41 can be installed on the middle position of the guide piece 4 to reduce the offset or skew during the assembly of the guide piece 4, so as to ensure the accuracy and stability of the installation position of the first electrical connection terminal 42 and the second electrical connection terminal 43.

[0057] Among them, the support structure 13 extends out of the side wall of the skeleton 1 along the first direction, that is, the support structure 13 can also support the side where the side connecting rod of the magnetic core component 3 is located, forming a two-way installation in the first direction and its vertical direction, so that the connection between the magnetic core component 3 and the skeleton 1 is more stable, and the displacement or skew of the magnetic core component 3 relative to the skeleton 1 is reduced. The guide plate 4 is arranged between the two support structures 13, and the first electrical connection end 42 and the second electrical connection end 43 can extend away from the skeleton 1 through the gap between the two support structures 13, that is, the first electrical connection end 42 and the second electrical connection end 43 can extend outward from the bottom of the magnetic core component 3, so as to facilitate the first electrical connection end 42 and the second electrical connection end 43 to be electrically connected to the external main circuit.

[0058] like Figures 1 to 3 As shown, in some embodiments, an insulating member 5 is provided in the winding groove 12, and the insulating member 5 is provided between the coil winding 2 and the guide piece 4, and the insulating member 5 covers the entire surface of the coil winding 2. The insulating member 5 can be provided in the gap between the surface of the coil winding 2 and the surface of the guide piece 4, and the guide piece 4 and the coil winding 2 are further insulated and separated, thereby improving the insulation effect of the guide piece 4 and the coil winding 2. Figure 3 As shown, a spacing may also be provided between the insulating member 5 and the guide plate 4, that is, the difference between the preset spacing g between the guide plate 4 and the coil winding 2 and the thickness of the insulating member 5 is greater than zero, so as to further improve the insulation effect between the guide plate 4 and the coil winding 2.

[0059] In this embodiment, the insulating member 5 is made of insulating material such as plastic or silicone. The insulating member 5 can be a sheet-like structure. The width of the sheet-like structure can be equal to or greater than the width of the winding groove 12, and can insulate and separate the guide plate 4 and the coil winding 2.

[0060] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A current transformer, characterized in that: The current transformer comprises: A frame (1), wherein a through hole (11) is provided in the frame (1), wherein the through hole (11) is extended along a first direction, and a winding groove (12) is provided on the frame (1), wherein the winding groove (12) is arranged along the circumference of the through hole (11); A coil winding (2), wherein the coil winding (2) is arranged in the winding slot (12); A magnetic core component (3), the magnetic core component (3) being connected to the skeleton (1), the magnetic core component (3) being arranged in the circumferential direction of the skeleton (1), and a portion of the magnetic core component (3) being inserted into the through hole (11); A guide piece (4), the guide piece (4) is extended along the circumference of the coil winding (2), and the guide piece (4) is arranged between the coil winding (2) and the magnetic core component (3), and connecting structures (41) are arranged on both sides of the guide piece (4), and the connecting structure (41) is connected to the skeleton (1), and the connecting structure (41) can support the guide piece (4) from the surface of the coil winding (2).

2. The current transformer according to claim 1, characterized in that: The connection structure (41) comprises: A support portion (411), the support portion (411) being connected to the guide piece (4), the support portion (411) being extended along the first direction, and the support portion (411) being covered on the top of the frame (1); A limiting portion (412), the limiting portion (412) being connected to the supporting portion (411), and the limiting portion (412) being arranged vertically along the first direction, and the limiting portion (412) being arranged on a side wall of the frame (1).

3. The current transformer according to claim 1, characterized in that: The magnetic core assembly (3) comprises a first core body (31) and a second core body (32) which are detachably connected, and the first core body (31) and the second core body (32) are respectively arranged at two end positions of the through hole (11).

4. The current transformer according to claim 3, characterized in that: The first core body (31) and the second core body (32) both comprise a bottom plate (33), a middle column (34) and side columns (35) whose ends are connected to the bottom plate (33); the middle column (34) of the first core body (31) and the middle column (34) of the second core body (32) are inserted into the through hole (11) and are connected to each other; the side columns (35) of the first core body (31) and the side columns (35) of the second core body (32) are arranged on the side of the frame (1) and are connected to each other.

5. The current transformer according to claim 4, characterized in that: The magnetic core assembly (3) further comprises a clamping member (36), wherein the clamping member (36) is arranged on the outer sides of the first core body (31) and the second core body (32), and the clamping member (36) is configured to provide a clamping force to the connection position of the first core body (31) and the second core body (32).

6. The current transformer according to claim 5, characterized in that: The clamping member (36) is an annular sheet structure, which is sleeved around the first core (31) and the second core (32), and a fracture (361) is provided on the annular sheet structure, and the fracture (361) is located at the position of the bottom plate (33).

7. The current transformer according to claim 5, characterized in that: Support structures (13) are arranged on both sides of the skeleton (1), and the support structures (13) are arranged to extend vertically along the first direction. The top of the support structure (13) supports the magnetic core component (3) from the bottom surface of the skeleton (1), and the side of the support structure (13) is provided with pins (14) for electrical connection, and the pins (14) are electrically connected to the coil winding (2).

8. The current transformer according to claim 7, characterized in that: The guide piece (4) has a first electrical connection end (42) and a second electrical connection end (43), and the first electrical connection end (42) and the second electrical connection end (43) are respectively arranged on both sides of the connection structure (41).

9. The current transformer according to claim 8, characterized in that: The support structure (13) extends out of the side wall of the frame (1) along the first direction, the guide plate (4) is arranged between the two support structures (13), and the first electrical connection end (42) and the second electrical connection end (43) can extend outward from the bottom of the magnetic core component (3).

10. The current transformer according to claim 1, characterized in that: An insulating member (5) is arranged in the winding groove (12), the insulating member (5) is arranged between the coil winding (2) and the guide piece (4), and the insulating member (5) covers the entire surface of the coil winding (2).

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