Current transformer
By setting up isolation plates, baffles and other structures on the current transformer housing, the creepage distance of the current is extended, the safety hazards and large size of the current transformer are solved, and the dual improvement of safety and cost is achieved.
Patent Information
- Application Number
- CN202420704613.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-08
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-08
AI Technical Summary
The creepage distance of the current transformer is short, which poses safety risks. At the same time, the shell is large in size and has high manufacturing cost.
The housing is provided with isolation plates, baffles, bent plates, bent bars, fixing plates and reinforcement ribs, which extend the creepage distance of the current through these structures and optimize the design of the housing to reduce volume and improve insulation performance.
It effectively increases the creepage distance of the current transformer, reduces safety risks, reduces the volume and manufacturing cost of the shell, and improves the insulation performance and heat dissipation effect.
Smart Images
Figure CN222190468U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of current transformers, and in particular to a current transformer. Background Art
[0002] A current transformer is an instrument that converts a large primary current into a small secondary current for measurement through the principle of electromagnetic induction. The main function of a current transformer is current conversion and electrical isolation.
[0003] In the related art, a current transformer includes a housing, a busbar is provided on the housing, and an shed is provided on the housing.
[0004] Since the current transformer is relatively small as a whole and the number of sheds is limited, the creepage distance on the shell is relatively short, thus posing certain safety risks. Utility Model Content
[0005] In order to improve the problem of short creepage distance of a current transformer, the present application provides a current transformer.
[0006] This application provides a current transformer, which adopts the following technical solution:
[0007] A current transformer comprises a shell, wherein the shell is provided with an shed, the shell is provided with a busbar, the shell is provided with two isolation plates, and the busbar is located between the two isolation plates.
[0008] By adopting the above technical solution, the busbar is located between two isolation plates, which increases the creepage distance of the current, thereby reducing the safety hazards of using the current transformer; because the isolation plate is arranged on the shell, when the current transformer meets the creepage distance requirements, the number of sheds in the shell can be reduced, thereby reducing the volume of the shell, so that the shell does not need to be too large, thereby reducing the manufacturing cost of the current transformer.
[0009] Optionally, two baffles are provided on the shell, and the two baffles are respectively located on both sides of the busbar.
[0010] By adopting the above technical solution, two baffles are respectively located on both sides of the busbar, and both the baffles and the isolation plate extend the creepage distance of the current transformer, further reducing the safety hazards of the current transformer.
[0011] Optionally, a bent plate is provided on the isolation plate, and the bent plate extends toward the busbar.
[0012] By adopting the above technical solution, the bent plate is extended toward the busbar, so that the bent plate does not occupy the vertical space in the current transformer, reducing the space occupied by the current transformer and allowing the current transformer to be suitable for some smaller places; at the same time, the creepage distance of the current on the isolation plate is increased, the insulation performance of the current transformer is improved, and the safety hazards in the current transformer are reduced.
[0013] Optionally, a bending strip is provided on the bending plate, and the bending strip extends toward the housing.
[0014] By adopting the above technical solution, the bending strip extends toward the housing, so that the current moves along the isolation plate, the bending plate and the bending strip, further increasing the creepage distance of the current and improving the insulation performance of the current transformer.
[0015] Optionally, a fixing plate is provided on the baffle, and the fixing plate extends in a direction away from the busbar.
[0016] By adopting the above technical solution, the fixing plate is extended in the direction away from the busbar, so that the fixing plate increases the creepage distance of the current on the baffle, reducing the safety hazards in the current transformer; at the same time, the staff can hold the fixing plate to move the shell, so that the staff can move the current transformer.
[0017] Optionally, the baffle is located on a side of the isolation plate facing the busbar, and the fixing plate is provided on a side of the isolation plate away from the shell.
[0018] By adopting the above technical solution, the fixing plate is located on the side of the isolation plate away from the shell, so that the fixing plate can protect the baffle and the bending plate, prevent the baffle and the bending plate from being damaged by wind and sun, and extend the service life of the baffle and the bending plate.
[0019] Optionally, the fixing plate is provided with reinforcing ribs, and the reinforcing ribs are arranged on the baffle.
[0020] By adopting the above technical solution, by setting reinforcing ribs on the baffle and the fixing plate, the structural strength between the baffle and the fixing plate is increased, making the baffle and the fixing plate more stable.
[0021] Optionally, two clearance grooves are provided on a surface of the housing close to the busbar, and the busbar is located between the two clearance grooves.
[0022] By adopting the above technical solution, the busbar is located between the two clearance grooves, which increases the creepage distance of the current on the shell, making the shell safer; at the same time, the groove wall of the clearance groove can increase the area of the shell facing the busbar, increase the heat dissipation space of the shell, so that the busbar has sufficient heat dissipation space when in use, reducing the heat of the current transformer.
[0023] Optionally, a groove wall of the give way groove is provided with a give way strip, and the give way strip is located on the groove wall of the give way groove close to or away from the busbar.
[0024] By adopting the above technical solution, the giveway bar is located on the slot wall of the giveway slot close to or away from the busbar, and the giveway bar can further increase the creepage distance of the shell, making the current transformer safer and further reducing the safety hazards of the shell.
[0025] In summary, this application includes at least one of the following beneficial technical effects:
[0026] 1. By placing the busbar between two isolation plates, the creepage distance of the current is increased, thereby reducing the safety hazards of the current transformer; since the isolation plate is set on the shell, the shell can meet the creepage distance requirements, so that the volume of the shell can be reduced, reducing the cost of manufacturing the current transformer.
[0027] 2. By extending the fixing plate in a direction away from the busbar, the fixing plate increases the creepage distance of the current on the baffle, reducing the safety hazards in the current transformer; at the same time, the staff can hold the fixing plate to move the shell, so that the staff can move the current transformer. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 is a schematic structural diagram of Example 1;
[0029] Figure 2 is a schematic structural diagram of Example 2;
[0030] Figure 3 It is a structural schematic diagram of the protruding baffle in Example 2.
[0031] Figure numerals: 1, shell; 11, umbrella skirt; 12, busbar; 13, give way groove; 14, give way strip; 2, isolation plate; 21, fixing plate; 22, reinforcing rib; 3, baffle; 31, bending plate; 32, bending strip. DETAILED DESCRIPTION
[0032] The following is combined with Figure 1-3 This application is described in further detail.
[0033] Example 1
[0034] This embodiment discloses a current transformer. Figure 1 A current transformer includes a shell 1, on which a plurality of sheds 11 are integrally formed. The plurality of sheds 11 are distributed in an array along the height direction of the shell 1.
[0035] Reference Figure 1The housing 1 is provided with electrical components for realizing the basic functions of a current transformer. Two busbars 12 are fixedly connected to the surface of the housing 1 and are arranged in an array along the length of the housing 1.
[0036] Reference Figure 1 Two isolation plates 2 are integrally formed on the surface of the housing 1. These two isolation plates 2 are located on either side of the busbar 12 and extend along the length of the housing 1. Two baffles 3 are integrally formed on the surface of the housing 1. These two baffles 3 are located on either side of the busbar 12 and extend along the length of the housing 1. Baffles 3 are located on the side of the isolation plate 2 away from the busbar 12, with the surface of the baffle 3 away from the housing 1 located on the side of the isolation plate 2 away from the housing 1 facing the housing 1. The width of the isolation plates 2 and baffles 3 gradually decreases on the side away from the housing 1.
[0037] The implementation principle of Example 1 is as follows: by arranging the baffle 3 and the isolation plate 2 on the housing 1, the creepage distance of the housing 1 is increased, thereby reducing the potential safety hazards when the current transformer is used.
[0038] Example 2
[0039] Reference Figure 2 and Figure 3 This embodiment differs from Embodiment 1 in that a bent plate 31 is integrally formed on the surface of the baffle 3, extending toward the busbar 12. A bent strip 32 is integrally formed on the surface of the bent plate 31, extending toward the housing 1 and not abutting the housing 1.
[0040] Reference Figure 3 A fixing plate 21 is integrally formed on the surface of the isolation plate 2, extending toward the baffle 3. A gap exists between the fixing plate 21 and the bent plate 31 to prevent current from passing through the bent plate 31 or the fixing plate 21. The surface of the fixing plate 21 facing away from the busbar 12 is located on the side of the baffle 3 facing away from the busbar 12, making it easier for workers to grasp the surface of the fixing plate 21 when carrying the current transformer.
[0041] Reference Figure 2 A plurality of reinforcing ribs 22 are integrally formed on the surface of the fixing plate 21 , the reinforcing ribs 22 are fixedly connected to the surface of the isolation plate 2 facing the busbar 12 , and the plurality of reinforcing ribs 22 are distributed in an array along the length direction of the fixing plate 21 .
[0042] Reference Figure 2The housing 1, which is provided with a busbar 12, has two clearance slots 13 formed on its surface. These slots 13 are located on either side of the busbar 12 and are arranged in an array along the length of the housing 1. A clearance bar 14 is fixedly connected to the walls of the clearance slots 13. Both clearance bars 14 are integrally formed on the walls of the clearance slots 13 near the busbar 12 to increase creepage distance. In other embodiments, the clearance bars 14 are integrally formed on the walls of the clearance slots 13 near or away from the busbar 12.
[0043] The implementation principle of Example 2 is: the current passes through the baffle 3, the bent plate 31, the bent strip 32, the isolation plate 2 and the fixed plate 21, thereby increasing the creepage distance of the current on the housing 1 and reducing the safety hazards of the current transformer.
[0044] Unless otherwise defined, the technical or scientific terms used in this application shall have the usual meanings understood by persons of ordinary skill in the field to which this application belongs. The words "first", "second", "third" and similar terms used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "one" or "a" do not indicate a quantity limitation, but rather indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprises" cover the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0045] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the design concept of the present application should be included in the scope of protection of the present application.
Claims
1. A current transformer, comprising a housing (1), wherein the housing (1) is provided with an shed (11), and wherein the housing (1) is provided with a busbar (12), wherein: The housing (1) is provided with two isolation plates (2), and the busbar (12) is located between the two isolation plates (2); The housing (1) is provided with two baffles (3), and the two baffles (3) are respectively located on two sides of the busbar (12); A bent plate (31) is provided on the isolation plate (2), and the bent plate (31) extends in the direction of the busbar (12).
2. A current transformer according to claim 1, characterized in that: The bending plate (31) is provided with a bending strip (32), and the bending strip (32) extends in the direction of the housing (1).
3. A current transformer according to claim 1, characterized in that: A fixing plate (21) is provided on the baffle (3), and the fixing plate (21) extends in a direction away from the busbar (12).
4. A current transformer according to claim 3, characterized in that: The baffle (3) is located on a side of the isolation plate (2) facing the busbar (12), and the fixing plate (21) is provided on a side of the isolation plate (2) away from the housing (1).
5. A current transformer according to claim 3, characterized in that: The fixing plate (21) is provided with a reinforcing rib (22), and the reinforcing rib (22) is arranged on the baffle (3).
6. A current transformer according to claim 1, characterized in that: Two clearance grooves (13) are provided on the surface of the housing (1) close to the busbar (12), and the busbar (12) is located between the two clearance grooves (13).
7. A current transformer according to claim 6, characterized in that: A groove wall of the give-way groove (13) is provided with a give-way strip (14), and the give-way strip (14) is located on the groove wall of the give-way groove (13) close to or away from the busbar (12).