A digital leakage current sensor

Abstract

The utility model discloses a kind of digital leakage current sensors, it is related to circuit system test technical field, and its technical scheme main points include sensor body, the lower end both sides of the sensor body are provided with the bottom fixed hole extending along vertical direction and the back fixed hole extending along horizontal front-back direction, the bottom fixed hole is waist groove, and located the downside of the sensor body upper end both sides side edge. The utility model has by balancing arrangement bottom fixed hole and back fixed hole, so that the sensor body fixed by bottom fixed hole and back fixed hole has significantly improved the stability of the digital leakage current sensor, to avoid the effect of line deviation leading to influence detection result.

Description

Technical Field

[0001] This utility model relates to the field of circuit system testing technology, and more specifically to a digital leakage current sensor. Background Technology

[0002] Digital leakage current sensors are specifically designed for testing the insulation resistance of DC system branches. They are widely used in power, photovoltaic, and high-voltage DC systems.

[0003] In existing DC power supply systems, leakage current detection typically uses a leakage current sensor to detect the difference in current between the positive and negative terminals in the circuit, and the insulation information of the feeder is fed back to the host computer for display through an insulation detection unit.

[0004] However, due to the simple installation and arrangement structure of this digital leakage current sensor, inaccurate detection data may occur due to line misalignment during actual use, which in turn affects the detection results and needs to be improved. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a digital leakage current sensor that improves detection accuracy.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A digital leakage current sensor includes a sensor body. The lower ends of the sensor body are provided with bottom fixing holes extending in a vertical direction and back fixing holes extending in a horizontal front-back direction on both sides. The bottom fixing holes are waist-groove shaped and located on the lower side of the upper ends of the sensor body.

[0008] Preferably, the lower center of the sensor body is provided with an access port and a DIP switch, the DIP switch is located above the access port, and the access port is provided with A, B, G, +, G, IO1, and IO2 interfaces.

[0009] Preferably, the front side of the sensor body is embedded and has a detection cavity located at the upper center.

[0010] Preferably, the top of the sensor body is semi-circular, the sides are vertical, and the bottom is concave; both sides of the lower end of the sensor body are provided with triangular fixing plates, and the back fixing holes are located on the corresponding fixing plates.

[0011] Preferably, the bottom of the fixing plate is provided with a reinforcing plate, and the bottom fixing hole is located on the corresponding reinforcing plate.

[0012] Preferably, the recessed shape consists of a vertical portion located at the inner center and a portion extending upward and outward from the upper and lower ends, connected to the vertical portion.

[0013] As can be seen from the above solutions, this application provides a digital leakage current sensor, which has the following beneficial effects: by balancing the bottom fixing holes and the back fixing holes, the sensor body fixed by the bottom fixing holes and the back fixing holes has significantly improved the stability of the digital leakage current sensor, thereby avoiding the effect of line misalignment on the detection results. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this embodiment.

[0015] Explanation of reference numerals in the attached drawings: 1. Sensor body; 11. Back mounting hole; 12. Bottom mounting hole; 13. Detection cavity; 2. Access port; 3. DIP switch. Detailed Implementation

[0016] To make the technical solution and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0017] like Figure 1 As shown, a digital leakage current sensor includes a sensor body 1. Bottom fixing holes 12 extending vertically and back fixing holes 11 extending horizontally are provided on both sides of the lower end of the sensor body 1. The bottom fixing holes 12 are groove-shaped and located on the lower side of the upper sides of the sensor body 1. Therefore, after fixing the sensor body 1 through the back fixing holes 11, the fixing structure of the groove-shaped bottom fixing holes 12 can be adjusted according to the actual installation situation, significantly improving the fixing stability of the digital leakage current sensor. It should be mentioned that the digital leakage current sensor has an access port 2 and a DIP switch 3 located at the center of the lower end of the sensor body 1. The DIP switch 3 is located at the upper end of the access port 2, which has A, B, G, +, G, IO1, and IO2 interfaces. Therefore, different rated input and output currents can be customized according to user needs, which is simple, convenient, and effective, allowing multiple interfaces to effectively connect external circuits and provide corresponding accurate detection results.

[0018] like Figure 1As shown, the front of the sensor body 1 is embedded, and a detection cavity 13 is provided at the upper center. Meanwhile, the top of the sensor body 1 is semi-circular, the sides are vertical, and the bottom is concave. Triangular fixing plates are provided on both sides of the lower end of the sensor body 1, and back fixing holes 11 are located on the corresponding fixing plates. Correspondingly, a reinforcing plate is provided at the bottom of the fixing plate, and a bottom fixing hole 12 is located on the corresponding reinforcing plate. Therefore, the fixing plate and the fixing plate work together to significantly improve the stability of the digital leakage current sensor. It should be noted that the concave shape consists of a vertical portion located at the inner center and portions extending upwards and outwards to the lower and upper outer sides. Therefore, by fully utilizing the stability of the triangular structure and coordinating with the arc-shaped structure to enhance the overall structural strength, the digital leakage current sensor achieves improved detection accuracy.

[0019] In summary, this application provides a digital leakage current sensor. By balancing the bottom fixing hole 12 and the back fixing hole 11, the sensor body 1 fixed by the bottom fixing hole 12 and the back fixing hole 11 has a significantly improved stability, thereby avoiding the effect of line misalignment on the detection results.

[0020] The terms “first,” “second,” “third,” “fourth,” etc., used in this application (if applicable) are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, or apparatus that includes a series of steps or units is not necessarily limited to those explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, or apparatus.

[0021] It should be noted that the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0022] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A digital leakage current sensor, characterized in that: The sensor body (1) includes a sensor body (1), and both sides of the lower end of the sensor body (1) are provided with a bottom fixing hole (12) extending in the vertical direction and a back fixing hole (11) extending in the horizontal front-back direction. The bottom fixing hole (12) is in the shape of a waist groove and is located on the lower side of the upper side of the sensor body (1).

2. A digital leakage current sensor according to claim 1, characterized in that: The sensor body (1) has an access port (2) and a DIP switch (3) at the lower center. The DIP switch (3) is located at the upper end of the access port (2), and the access port (2) is provided with A, B, G, +, G, IO1, and IO2 interfaces.

3. A digital leakage current sensor according to claim 1, characterized in that: The front side of the sensor body (1) is embedded and has a detection cavity (13) located at the center of the upper end.

4. A digital leakage current sensor according to claim 3, characterized in that: The top of the sensor body (1) is semi-circular, the sides are vertical and the bottom is concave; both sides of the lower end of the sensor body (1) are provided with triangular fixing plates, and the back fixing hole (11) is located on the corresponding fixing plate.

5. A digital leakage current sensor according to claim 4, characterized in that: The bottom of the fixing plate is provided with a reinforcing plate, and the bottom fixing hole (12) is located on the corresponding reinforcing plate.

6. A digital leakage current sensor according to claim 4, characterized in that: The concave shape consists of a vertical portion located at the inner center and a portion extending upwards and outwards from the lower end, connected to the vertical portion.

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