Three-phase integrated low-voltage current transformer

Abstract

The utility model discloses a three-phase integrated low-voltage current transformer, and relates to the technical field of transformers. The three-phase integrated low-voltage current transformer comprises an integrated transformer main body, a secondary junction box is arranged on the integrated transformer main body, a plurality of groups of cable main bodies are connected to the secondary junction box, a positioning mounting base is arranged at the bottom of the integrated transformer main body, and a clamping seat is movably clamped on the positioning mounting base. And the clamping seat is fixedly connected with a plurality of groups of cable limiting seats. According to the three-phase integrated low-voltage current transformer, the clamping seat and the cable limiting seat are clamped on the positioning mounting base, and a plurality of groups of cable main bodies on the secondary junction box are reinforced through the cable limiting seat, so that the cable main bodies and the secondary junction box are in tight butt joint, are ordered and are not easy to loosen; therefore, the connection stability of the cable main body at the position of the secondary junction box of the integrated mutual inductor main body is good, subsequent repair and maintenance are easy, and the use requirements are met.

Description

Technical Field

[0001] The utility model relates to the technical field of mutual inductors, in particular to a three-phase integrated low-voltage current mutual inductor. Background Art

[0002] A three-phase low-voltage current transformer, also called a combined current transformer or a low-voltage current transformer, is a device used to measure and monitor current in a three-phase AC circuit. It works based on the principle of electromagnetic induction. Its structure usually contains a magnetic core and a coil. When a three-phase AC current passes through one side of the transformer, the magnetic field generated will pass through the core and generate an induced electromotive force in the coil. The magnitude of this induced electromotive force is proportional to the current passing through the transformer.

[0003] In the prior art, since there are no corresponding reinforcement and arrangement measures at the secondary lead connection of the three-phase low-voltage current transformer, the cables may become loose or arranged irregularly during subsequent use, which will lead to poor cable connection stability in the transformer secondary junction box. The irregular cable arrangement will also cause inconvenience in subsequent inspection and maintenance. In view of the shortcomings of the prior art, the utility model provides a three-phase low-voltage current transformer to solve the above problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a three-phase integrated low-voltage current transformer. Through the design of a positioning installation base, on the one hand, the integrated transformer body is easily installed. On the other hand, a card connector and a cable limiter are snapped on the positioning installation base. Through the cable limiter, multiple groups of cable bodies on the secondary junction box are reinforced to ensure that the cable bodies are tightly connected to the secondary junction box, arranged in order, and not easy to loosen, thereby ensuring that the cable body connection stability of the secondary junction box position of the integrated transformer body is good, and subsequent inspection and maintenance are easy to meet the use requirements.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a three-phase integrated low-voltage current transformer, including an integrated transformer body, a secondary junction box is provided on the integrated transformer body, a plurality of cable bodies are connected to the secondary junction box, a positioning mounting base is provided at the bottom of the integrated transformer body, and a card connector is movably connected to the positioning mounting base;

[0006] The clamping seat is fixedly connected with a plurality of cable limiting seats, and the cable limiting seats are used to limit the cable body;

[0007] The cable limiting seat is provided with a first clamping seat, a screw rod is threadedly connected to the cable limiting seat, a second clamping seat is rotatably connected to the screw rod, and the cable body is clamped in the first clamping seat and the second clamping seat.

[0008] Preferably, a rubber pad is fixedly connected to the second holder.

[0009] Preferably, a slider is fixedly connected to the second clamping seat, and the slider is slidably connected to the cable limiting seat.

[0010] Preferably, a rotating handle is provided on the screw rod.

[0011] Preferably, a fixing hole and a slot are provided on the positioning and mounting base, and the connecting seat is movably connected in the slot.

[0012] Preferably, a locking hole is provided on the clamping seat, a positioning pin is threadedly connected to the positioning mounting base, and the positioning pin is movably clamped in the locking hole.

[0013] The utility model discloses a three-phase integrated low-voltage current transformer, which has the following beneficial effects:

[0014] The three-phase integrated low-voltage current transformer, through the design of the positioning installation base, on the one hand, realizes the convenience of installation of the integrated transformer body, and on the other hand, the card seat and the cable limit seat are clamped on the positioning installation base, and the cable limit seat is used to provide reinforcement for multiple groups of cable bodies on the secondary junction box, ensuring that the cable bodies and the secondary junction box are tightly connected, arranged in order, and not easy to loosen, thereby ensuring that the cable bodies at the secondary junction box position of the integrated transformer body have good connection stability, are easy to repair and maintain later, and meet the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a disassembly diagram of the positioning pin of the utility model;

[0018] Figure 3 This is a structural schematic diagram of the card slot of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the cable limit seat of the utility model.

[0020] In the figure: 1. integrated transformer body; 2. secondary junction box; 201. cable body; 3. positioning mounting base; 301. fixing hole; 302. slot; 303. positioning pin; 4. snap-in seat; 401. locking hole; 5. cable limit seat; 501. first snap-in seat; 502. screw rod; 5021. rotating handle; 503. second snap-in seat; 5031. rubber pad; 5032. slider. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The embodiment of the present application provides a three-phase low-voltage current transformer, which solves the problem in the prior art that the secondary lead wiring of the three-phase low-voltage current transformer has no corresponding reinforcement and arrangement measures, and the cables may become loose or arranged irregularly during subsequent use, which will lead to poor cable connection stability in the transformer secondary junction box, and the irregular cable arrangement will cause inconvenience in subsequent inspection and maintenance.

[0023] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] The utility model embodiment discloses a three-phase integrated low-voltage current transformer. Figure 1-4 As shown, it includes an integrated transformer body 1, a secondary junction box 2 is provided on the integrated transformer body 1, a plurality of cable bodies 201 are connected to the secondary junction box 2, a positioning mounting base 3 is provided at the bottom of the integrated transformer body 1, and a card connector 4 is movably connected to the positioning mounting base 3;

[0025] The clamping seat 4 is fixedly connected with a plurality of cable limiting seats 5, and the cable limiting seats 5 are used to limit the cable body 201;

[0026] The cable limiting seat 5 is provided with a first clamping seat 501 , a screw rod 502 is threadedly connected to the cable limiting seat 5 , a second clamping seat 503 is rotatably connected to the screw rod 502 , and the cable body 201 is clamped in the first clamping seat 501 and the second clamping seat 503 .

[0027] Furthermore, a rubber pad 5031 is fixedly connected to the second clamping seat 503 . The rubber pad 5031 ensures that when the first clamping seat 501 and the second clamping seat 503 clamp and limit the cable body 201 , the surface of the cable body 201 is subjected to great resistance, and the clamping effect is good.

[0028] Furthermore, a slider 5032 is fixedly connected to the second clamping seat 503, and the slider 5032 is slidably connected to the cable limit seat 5. The slider 5032 is set to provide support and limitation for the second clamping seat 503, thereby ensuring that the force on the second clamping seat 503 is stable, and the second clamping seat 503 is not easy to shift during movement, thereby having a good clamping effect on the cable body 201.

[0029] It is particularly disclosed that a rotating handle 5021 is provided on the screw rod 502, and the rotating handle 5021 makes it easier and more convenient to rotate the screw rod 502.

[0030] Specifically, a fixing hole 301 and a slot 302 are provided on the positioning mounting base 3, and the connecting seat 4 is movably connected in the slot 302. The setting of the fixing hole 301 facilitates fixing the positioning mounting base 3 to the target position using bolts, and the setting of the slot 302 realizes the support and limitation of the connecting seat 4.

[0031] Furthermore, a locking hole 401 is provided on the clamping seat 4, and a positioning pin 303 is threadedly connected to the positioning mounting base 3. The positioning pin 303 is movably clamped in the locking hole 401. The coordination between the positioning pin 303 and the locking hole 401 facilitates the clamping seat 4 to be easily clamped and locked on the positioning mounting base 3.

[0032] The three-phase integrated low-voltage current transformer, through the design of the positioning installation base 3, on the one hand, realizes the convenience of installation of the integrated transformer body 1, and on the other hand, the card seat 4 and the cable limit seat 5 are clamped on the positioning installation base 3, and the cable limit seat 5 is used to provide reinforcement for the multiple groups of cable bodies 201 on the secondary junction box 2, ensuring that the cable bodies 201 and the secondary junction box 2 are tightly connected, arranged in order, and not easy to loosen, thereby ensuring that the connection stability of the cable bodies 201 at the secondary junction box 2 position of the integrated transformer body 1 is good, and it is easy to inspect and maintain later to meet the use requirements.

[0033] When reinforcing the cable body 201 of the secondary junction box 2, firstly, the clamping seat 4 is clamped in the clamping groove 302, and then the positioning pin 303 is screwed into the interior of the positioning mounting base 3 and the locking hole 401. At this time, the cable body 201 is placed in the arc groove on the first clamping seat 501 for arrangement and classification. After arrangement, the screw rod 502 is rotated so that the screw rod 502 pushes the second clamping seat 503 to move. The second clamping seat 503 finally cooperates with the first clamping seat 501 to clamp and limit the position of the cable body 201.

[0034] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A three-phase integrated low-voltage current transformer, comprising an integrated transformer body (1), the integrated transformer body (1) being provided with a secondary junction box (2), the secondary junction box (2) being connected to a plurality of cable bodies (201), characterized in that: A positioning and mounting base (3) is provided at the bottom of the integrated mutual inductor body (1), and a clamping seat (4) is movably clamped on the positioning and mounting base (3); The clamping seat (4) is fixedly connected to a plurality of groups of cable limiting seats (5), and the cable limiting seats (5) are used to limit the position of the cable body (201); The cable limiting seat (5) is provided with a first clamping seat (501), a screw rod (502) is threadedly connected to the cable limiting seat (5), a second clamping seat (503) is rotatably connected to the screw rod (502), and the cable body (201) is clamped in the first clamping seat (501) and the second clamping seat (503).

2. A three-phase low-voltage current transformer according to claim 1, characterized in that: A rubber pad (5031) is fixedly connected to the second clamping seat (503).

3. A three-phase low-voltage current transformer according to claim 2, characterized in that: A slider (5032) is fixedly connected to the second clamping seat (503), and the slider (5032) is slidably connected to the cable limiting seat (5).

4. The three-phase low-voltage current transformer according to claim 1, characterized in that: The screw rod (502) is provided with a rotating handle (5021).

5. The three-phase low-voltage current transformer according to claim 1, characterized in that: The positioning and mounting base (3) is provided with a fixing hole (301) and a clamping slot (302), and the clamping seat (4) is movably clamped in the clamping slot (302).

6. A three-phase low-voltage current transformer according to claim 5, characterized in that: The clamping seat (4) is provided with a locking hole (401), and the positioning installation base (3) is threadedly connected with a positioning pin (303), and the positioning pin (303) is movably clamped in the locking hole (401).

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