Improved three-phase current transformer

Abstract

The utility model relates to the technical field of current transformers, and discloses an improved three-phase current transformer which comprises a current mutual inductance structure, the inner side of the current mutual inductance structure is fixedly connected with a three-in-one port cable, and one side of the three-in-one port cable is fixedly connected with a network interface. The current transformer is provided with the current transformer structure, the current transformer structure is provided with the base, the base is connected with the upper cover through the framework, the base, the framework and the upper cover form the current transformer structure, the inner side of the base is provided with the cable, and the cable is connected with the cable elbow and the cable protection connector. The cross-shaped wiring port is arranged on the outer side of the cable protection connector and used for being connected with a three-in-one port cable, current transmission is facilitated, the outer side of the cross-shaped wiring port is connected with the leakage protector through the connecting body, when current input by the cross-shaped wiring port is too large, the leakage protector can be powered off in time, the cable protection effect is achieved, and the service life of the cable protection connector is prolonged. And finally, the three-in-one cable is connected with a network interface.

Description

Technical Field

[0001] The utility model relates to the technical field of current transformers, in particular to an improved three-phase current transformer. Background Art

[0002] With the development of the mutual instrument industry, its application areas are becoming more and more extensive. Mutual instruments are gradually being applied to the equipment of emerging new energy industries such as photovoltaics and energy storage to monitor the real-time status of equipment. However, the equipment in the energy industry is distributed in a large space and over long distances. The previous method of manual inspection and monitoring of the real-time status of equipment is difficult to meet the needs of the new energy industry. Therefore, providing a mutual instrument that can be monitored over the network has become a huge demand in the new energy industry.

[0003] Application number 202322367143.3 discloses an improved three-phase current transformer, comprising a three-in-one network port cable and three sets of current mutual sensing units. The three-in-one network port cable has a main cable segment at one end and three branch cable segments formed by splitting the main cable segment at the other end. A branching clamp is provided between the two ends to secure the junctions of the three branch cable segments with the main cable segment. The ends of the main cable segments are provided with network interfaces, and the ends of each branch cable segment are correspondingly inserted into a current mutual sensing unit and communicatively connected to the current mutual sensing unit. This utility model effectively implements network monitoring through the coordination of the three-in-one network port cable and the three sets of current mutual sensing units.

[0004] However, there are some shortcomings. The device effectively realizes network monitoring through the cooperation between the three-in-one network port cable and three sets of current mutual inductance units. However, the device does not provide enough protection for the three-in-one network port cable. When the input current of the three-in-one network port cable is too large, leakage may be caused by overvoltage. Utility Model Content

[0005] The purpose of the present utility model is to provide an improved three-phase current transformer to solve the problem that the device proposed in the above background technology effectively realizes network monitoring through the cooperation between a three-in-one network port cable and three groups of current mutual sensing units, but the device does not provide sufficient protection for the three-in-one network port cable. When the input current of the three-in-one network port cable is too large, leakage may be caused by overvoltage.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The utility model is an improved three-phase current transformer, comprising a current mutual induction structure, wherein a three-in-one port cable is fixedly connected to the inner side of the current mutual induction structure, and a network interface is fixedly connected to one side of the three-in-one port cable. The current mutual induction structure comprises a base and a frame, wherein the inner side of the base is fixedly connected to the frame, and the upper side of the frame is movably connected to an upper cover.

[0008] Furthermore, the three-in-one port cable includes a cable line and a cable elbow. The inner side of the base is fixedly connected to the cable line, one side of the cable line is fixedly connected to the cable elbow, and the outer side of the cable line is fixedly connected to a cable protection connector.

[0009] Furthermore, a cross connection port is fixedly connected to the outer side of the cable protection joint, a connector is fixedly connected to the outer side of the cross connection port, and a leakage protector is fixedly connected to one side of the connector.

[0010] Furthermore, a three-in-one cable is fixedly connected to the inner side of the cross connection port.

[0011] Furthermore, one side of the three-in-one cable is fixedly connected to an interface, and a side of the interface away from the three-in-one cable is fixedly connected to a current collector.

[0012] Furthermore, an insulating layer is fixedly connected to the outer side of the current collector, an anti-collision layer is fixedly connected to the outer side of the insulating layer, and an anti-collision back cover is fixedly connected to one side of the anti-collision layer.

[0013] The utility model has the following beneficial effects:

[0014] (1) The utility model is provided with a current mutual induction structure, which is provided with a base. The base is connected to the upper cover through a frame, and the current mutual induction structure is formed by the base, the frame and the upper cover. A cable is provided on the inner side of the base, and the cable is connected to the cable elbow and the cable protection joint. A cross wiring port is provided on the outer side of the cable protection joint for connecting a three-in-one port cable, which facilitates current transmission. The outer side of the cross wiring port is connected to the leakage protector through a connector. When the current input to the cross wiring port is too large, the leakage protector will cut off the power in time to protect the cable. Finally, it is connected to the network interface through the three-in-one cable.

[0015] (2) The utility model is provided with a network interface, which is connected to a three-in-one cable through an interface device. A collector is provided on the side of the interface device away from the three-in-one cable, which is used to collect the current transmitted by the three-in-one port cable. Considering that the input current may be too large, an insulating layer is provided on the outside of the collector to protect the current, and an anti-collision layer and an anti-collision back cover are provided on the outside of the insulating layer to prevent collision, which has good practicality.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the base connection of the current mutual inductance structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the connection of the three-in-one port cable cross wiring port of the utility model;

[0021] Figure 4 This is a schematic diagram of the network interface connection device of the utility model;

[0022] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0023] Figure: 1. Current mutual inductance structure; 2. Three-in-one port cable; 3. Network interface; 101. Base; 102. Frame; 103. Upper cover; 201. Cable; 202. Cable elbow; 203. Cable protection connector; 204. Cross-wiring port; 205. Connector; 206. Leakage protector; 207. Three-in-one cable; 301. Interface; 302. Current collector; 303. Insulation layer; 304. Anti-collision layer; 305. Anti-collision rear cover. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-Figure 4 As shown, the utility model is an improved three-phase current transformer, including a current mutual sensing structure 1, a three-in-one port cable 2 is fixedly connected to the inner side of the current mutual sensing structure 1, and a network interface 3 is fixedly connected to one side of the three-in-one port cable 2. The current mutual sensing structure 1 includes a base 101 and a skeleton 102, the inner side of the base 101 is fixedly connected to the skeleton 102, and the upper side of the skeleton 102 is movably connected to the upper cover 103.

[0026] By adopting the above technical solution, this solution provides a frame 102 , and the base 101 is connected to the upper cover 103 via the frame 102 .

[0027] The three-in-one port cable 2 includes a cable line 201 and a cable elbow 202 . The cable line 201 is fixedly connected to the inner side of the base 101 , the cable elbow 202 is fixedly connected to one side of the cable line 201 , and the cable protection connector 203 is fixedly connected to the outer side of the cable line 201 .

[0028] By adopting the above technical solution, this solution provides a cable protection joint 203, and two cable protection joints 203 are symmetrically provided.

[0029] The outer side of the cable protection joint 203 is fixedly connected to a cross connection port 204 , the outer side of the cross connection port 204 is fixedly connected to a connector 205 , and one side of the connector 205 is fixedly connected to a leakage protector 206 .

[0030] By adopting the above technical solution, this solution provides a connector 205 , and the cross connection port 204 is connected to the leakage protector 206 via the connector 205 .

[0031] A three-in-one cable 207 is fixedly connected to the inner side of the cross connection port 204 .

[0032] By adopting the above technical solution, this solution provides a three-in-one cable 207 , which is used to transmit currents of the three current mutual inductance structures 1 .

[0033] One side of the three-in-one cable 207 is fixedly connected to an interface 301 , and a side of the interface 301 away from the three-in-one cable 207 is fixedly connected to a current collector 302 .

[0034] By adopting the above technical solution, this solution provides an interface 301 , and the three-in-one cable 207 is connected to the current collector 302 through the interface 301 .

[0035] The outer side of the current collector 302 is fixedly connected to an insulating layer 303 , the outer side of the insulating layer 303 is fixedly connected to an anti-collision layer 304 , and one side of the anti-collision layer 304 is fixedly connected to an anti-collision back cover 305 .

[0036] By adopting the above technical solution, the present solution provides an anti-collision layer 304 , and the insulating layer 303 is connected to the anti-collision back cover 305 via the anti-collision layer 304 .

[0037] When in use, a current mutual induction structure 1 is first set up, and the current mutual induction structure 1 is provided with a base 101, and the base 101 is connected to the upper cover 103 through the frame 102, and the current mutual induction structure 1 is formed by the base 101, the frame 102 and the upper cover 103, and a cable 201 is set on the inner side of the base 101, and the cable 201 is connected to the cable elbow 202 and the cable protection joint 203. A cross wiring port 204 is set on the outside of the cable protection joint 203 for connecting the three-in-one port cable 2, which facilitates current transmission. The outside of the cross wiring port 204 is connected to the leakage protector 206 through the connector 205. When the cross wiring port 20 When the input current is too large, the leakage protector 206 will cut off the power in time to protect the cable. Finally, the network interface 3 is connected to the three-in-one cable 207, and the network interface 3 is set. The network interface 3 is connected to the three-in-one cable 207 through the interface 301. A collector 302 is set on the side of the interface 301 away from the three-in-one cable 207 to collect the current transmitted by the three-in-one port cable 2. Considering that the input current may be too large, an insulating layer 303 is set on the outside of the collector 302 to protect the current. In addition, an anti-collision layer 304 and an anti-collision back cover 305 are set on the outside of the insulating layer 303 to prevent collisions, which has good practicality.

[0038] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An improved three-phase current transformer, comprising a current mutual inductance structure (1), characterized in that: The inner side of the current mutual induction structure (1) is fixedly connected to a three-in-one port cable (2), one side of the three-in-one port cable (2) is fixedly connected to a network interface (3), and the current mutual induction structure (1) comprises a base (101) and a frame (102), the inner side of the base (101) is fixedly connected to the frame (102), and the upper side of the frame (102) is movably connected to an upper cover (103).

2. The improved three-phase current transformer according to claim 1, characterized in that: The three-in-one port cable (2) comprises a cable line (201) and a cable elbow (202); the inner side of the base (101) is fixedly connected to the cable line (201); one side of the cable line (201) is fixedly connected to the cable elbow (202); and the outer side of the cable line (201) is fixedly connected to a cable protection connector (203).

3. The improved three-phase current transformer according to claim 2, characterized in that: The outer side of the cable protection joint (203) is fixedly connected to a cross connection port (204), the outer side of the cross connection port (204) is fixedly connected to a connector (205), and one side of the connector (205) is fixedly connected to a leakage protector (206).

4. The improved three-phase current transformer according to claim 3, characterized in that: A three-in-one cable (207) is fixedly connected to the inner side of the cross connection port (204).

5. The improved three-phase current transformer according to claim 4, characterized in that: One side of the three-in-one cable (207) is fixedly connected to an interface (301), and the side of the interface (301) away from the three-in-one cable (207) is fixedly connected to a current collector (302).

6. The improved three-phase current transformer according to claim 5, characterized in that: An insulating layer (303) is fixedly connected to the outer side of the current collector (302), an anti-collision layer (304) is fixedly connected to the outer side of the insulating layer (303), and an anti-collision back cover (305) is fixedly connected to one side of the anti-collision layer (304).

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