A current terminal for easy inspection and testing

Abstract

The utility model relates to current terminal field especially, it is convenient to check and current terminal of experiment, including current terminal subassembly, quick disconnecting latch subassembly, quick disconnecting latch subassembly is inserted in the inside of current terminal subassembly, the bottom of current terminal subassembly is provided with buckle, the inside of current terminal subassembly is provided with metal wiring hole, one side fixedly connected with spring of metal wiring hole, spring sets up in the inside of current terminal subassembly, one end fixedly connected with connecting spring piece of metal wiring hole. Its mainly to repeatedly open current terminal link piece waste a lot of time and exist certain safe hidden danger's problem, propose following technical scheme: the novel current terminal subassembly and quick disconnecting latch subassembly close cooperation use of the utility model design, can quick disconnecting between relay protection and mutual inductor when to current mutual inductor test and relay protection test, reduced the time of opening current terminal link piece.

Description

Technical Field

[0001] This utility model relates to the field of current terminals, and in particular to a current terminal that is convenient for inspection and testing. Background Technology

[0002] While older current terminals simplified the operation process to some extent, repeatedly cutting open the current terminal contacts during current transformer and relay testing not only wasted a significant amount of time but also posed certain safety hazards. If a current terminal contact was not cut open, high voltage would be generated on the secondary winding of the current transformer (CT), damaging equipment and endangering personal safety. It could also cause relay protection malfunctions, resulting in large-scale power outages in the plant area, expanding the scope of the accident, severely impacting the stable operation of the entire power system, and increasing the costs of equipment maintenance and replacement. Utility Model Content

[0003] The purpose of this invention is to solve the problem that repeatedly cutting open the current terminal connections during current transformer and relay protection tests wastes a lot of time and poses certain safety hazards.

[0004] The technical solution of this utility model is as follows: A current terminal that is convenient for inspection and testing includes a current terminal assembly and a quick-disconnect pin assembly. The quick-disconnect pin assembly is inserted into the current terminal assembly. A buckle is provided at the bottom of the current terminal assembly. A metal wiring hole is provided inside the current terminal assembly. A spring is fixedly connected to one side of the metal wiring hole. The spring is located inside the current terminal assembly. A connecting spring is fixedly connected to one end of the metal wiring hole. The spring is fixedly connected to the inner side of the connecting spring.

[0005] Optionally, the connecting spring is disposed inside the current terminal assembly.

[0006] Optionally, wire holes are provided on both sides of the current terminal assembly.

[0007] Optionally, the top threaded connection of the current terminal assembly includes two wire fixing screws.

[0008] Optionally, the two wire fixing screws are respectively connected to the two wire holes in an interlocking manner.

[0009] Optionally, the overall outline of the metal wiring hole tends to be "L" shaped.

[0010] Optionally, there are two metal wiring holes, springs, wire fixing screws, and connecting springs. The two metal wiring holes, springs, wire fixing screws, and connecting springs are arranged in an axially symmetrical manner, and the two connecting springs are arranged in an abutting manner.

[0011] Optionally, the connecting spring is an elastic structure.

[0012] Optionally, the quick-disconnect pin assembly includes an insulating isolation plate and a pull ring, wherein the insulating isolation plate and the pull ring are fixedly connected.

[0013] Optionally, the insulating isolation plate is configured with a "T" shaped profile, and the pull ring is configured with an arc-shaped profile.

[0014] In summary, this application includes at least one of the following beneficial technical effects: The novel current terminal assembly designed in this utility model is used in close cooperation with the quick-disconnect pin assembly. The quick-disconnect pin assembly is characterized by high efficiency and convenience. When checking whether the current terminal assembly is connected, only a simple presence check of the quick-disconnect pin assembly is needed to determine the status of the current terminal assembly, which simplifies the operation steps and meets various practical needs.

[0015] Furthermore, during current transformer and relay protection tests, the connection between the relay protection and the transformer can be quickly disconnected, reducing the time spent marking the current terminal connections. This utility model perfectly solves the major risk of missed marking of cable terminal connections in the past, while also shortening the time for current transformer and relay protection tests, greatly improving work efficiency, saving labor costs, and shortening the commissioning period.

[0016] In summary, the novel current terminal assembly and quick-disconnect pin assembly designed in this utility model work closely together. The quick-disconnect pin assembly is highly efficient and convenient. When checking whether the terminals are connected, only a simple presence check of the device is required. During current transformer and relay protection tests, the connection between the relay protection and the transformer can be quickly disconnected, reducing the time spent marking the current terminal connections. This design perfectly solves the major risk of missed marking of cable terminal connections in the past, and also shortens the time for current transformer and relay protection tests, greatly improving work efficiency, saving labor costs, and shortening the commissioning period. Attached Figure Description

[0017] Figure 1 A schematic diagram of the front structure of the current terminals for easy inspection and testing; Figure 2 A side view of the current terminals for easy inspection and testing. Figure 3 A schematic diagram of the top structure of the current terminals for easy inspection and testing; Figure 4 A front view diagram of the quick-disconnect pin assembly.

[0018] Figure label: 1. Buckle; 2. Metal wiring hole; 3. Spring; 4. Wire fixing screw; 5. Connecting spring; 6. Wire hole; 7. Insulating isolation plate; 8. Pull ring. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0020] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0021] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Example 1: As Figures 1-4As shown, a current terminal for easy inspection and testing includes a current terminal assembly and a quick-disconnect pin assembly. The bottom of the current terminal assembly has a latch 1, the inner contour of which matches the outer contour of the guide rail. The current terminal assembly has a metal wiring hole 2 inside, and a spring 3 is fixedly connected to one side of the metal wiring hole 2. The spring 3 is located inside the current terminal assembly. A connecting spring 5 is fixedly connected to one end of the metal wiring hole 2, and the spring 3 is fixedly connected to the inner side of the connecting spring 5. The springs 3 on both sides apply a pushing force to the connecting springs 5 ​​on both sides, causing the connecting springs 5 ​​to fit tightly together. The connecting springs 5 ​​are located inside the current terminal assembly. Wire holes 6 are provided on both sides of the current terminal assembly. The top threaded connection has two wire fixing screws 4, which are respectively inserted into the two wire holes 6. The overall outline of the metal wiring hole 2 is close to "L". There are two metal wiring holes 2, springs 3, wire fixing screws 4, and connecting springs 5. The two metal wiring holes 2, springs 3, wire fixing screws 4, and connecting springs 5 ​​are all arranged axially symmetrically. The two connecting springs 5 ​​are arranged in abutting position. The connecting springs 5 ​​are elastic structures. The quick disconnect pin assembly includes an insulating isolation plate 7 and a pull ring 8. The insulating isolation plate 7 and the pull ring 8 are fixedly connected. The insulating isolation plate 7 has a "T" shaped outline, and the pull ring 8 has an arc-shaped outline. The insulating isolation plate 7 can be inserted between the two connecting springs 5.

[0025] In this embodiment, the special contour of the buckle 1 allows for a stable connection with the guide rail, facilitating easy installation. The cable enters the current terminal assembly through the wire hole 6, and the cable is secured by tightening the wire fixing screws 4 on both sides, applying pressure to prevent the current terminal assembly from falling off. Simultaneously, the insulating isolation plate 7 is inserted between the connecting springs 5 ​​on both sides, separating the two connecting springs 5 ​​and quickly and effectively separating the two ends of the terminals, ensuring that the terminals on both sides can enter the disconnected state. The upper lifting ring 8 separates the insulating isolation plate 7 from the connecting springs 5, allowing the terminals on both sides to enter the connected state, thus ensuring the terminals on both sides are connected. The device can quickly enter the disconnect and connect states, reducing the time spent opening and connecting current terminals during current transformer and relay protection tests. When powering on, it is only necessary to check whether the quick-disconnect pin assembly is on the current terminal assembly to determine whether the current terminal assembly is in the connected state. This not only perfectly solves the major risk of missing sections of cable terminals in the past, but also shortens the time for current transformer and relay protection tests, greatly improving work efficiency, saving labor costs, and shortening the commissioning period. At the same time, when checking whether the current terminal assembly is connected, only a simple presence check of the quick-disconnect pin assembly is needed to determine the status of the current terminal assembly, simplifying the operation steps and meeting various practical needs.

[0026] The above specific embodiments are merely optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A current terminal for convenient inspection and testing, comprising a current terminal assembly and a quick-disconnect pin assembly, characterized in that: The quick disconnect pin assembly is inserted into the interior of the current terminal assembly. The bottom of the current terminal assembly is provided with a buckle (1). The interior of the current terminal assembly is provided with a metal wiring hole (2). A spring (3) is fixedly connected to one side of the metal wiring hole (2). The spring (3) is located inside the current terminal assembly. A connecting spring (5) is fixedly connected to one end of the metal wiring hole (2). The spring (3) is fixedly connected to the inner side of the connecting spring (5).

2. The current terminal for convenient inspection and testing according to claim 1, characterized in that, The connecting spring (5) is disposed inside the current terminal assembly.

3. A current terminal for convenient inspection and testing according to claim 1, characterized in that, The current terminal assembly has wire holes (6) on both sides.

4. A current terminal for convenient inspection and testing according to claim 3, characterized in that, The top threaded connection of the current terminal assembly has two wire fixing screws (4).

5. A current terminal for convenient inspection and testing according to claim 4, characterized in that, The two wire fixing screws (4) are respectively inserted into the two wire holes (6).

6. A current terminal for convenient inspection and testing according to claim 1, characterized in that, The overall outline of the metal wiring hole (2) tends to be "L" shaped.

7. A current terminal for convenient inspection and testing according to claim 1, characterized in that, The metal wiring hole (2), spring (3), wire fixing screw (4), and connecting spring (5) are all set in pairs. The two metal wiring holes (2), springs (3), wire fixing screws (4), and connecting springs (5) are arranged in an axially symmetrical manner, and the two connecting springs (5) are arranged in a mutually abutting manner.

8. A current terminal for convenient inspection and testing according to claim 1, characterized in that, The connecting spring (5) is an elastic structure.

9. A current terminal for convenient inspection and testing according to claim 1, characterized in that, The quick-disconnect pin assembly includes an insulating isolation plate (7) and a pull ring (8), and the insulating isolation plate (7) and the pull ring (8) are fixedly connected.

10. A current terminal for convenient inspection and testing according to claim 9, characterized in that, The insulating isolation plate (7) is configured with a "T" shaped outline, and the pull ring (8) is configured with an arc-shaped outline.

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