A high-line cable auxiliary device suitable for electrical fast transient burst test

Abstract

The utility model belongs to the electromagnetic compatibility anti-interference performance test technical field relates to a kind of frame height cable auxiliary device suitable for electric fast transient impulse group test, including the upper cable support of split assembly, vertical line pipeline and lower cable base, the bottom of vertical line pipeline is rotatably installed on the lower cable base, the top of vertical line pipeline is installed with upper cable support, vertical line pipeline is assembled by multiple hollow insulation pipeline.This utility model solves the problem that upper cable is difficult to lay due to flexibility when arranging frame height cable for electric fast transient impulse group immunity by upper cable support, and also meets the test height adaptability of different height samples by relying on the multi-section assembly of vertical line pipeline, and optimizes the storage space of the device and improves its portability by the split assembly design of each component.

Description

Technical Field

[0001] This utility model relates to the field testing technology of electromagnetic compatibility (EMC) immunity performance testing, specifically for overhead cable testing arrangements in the field of EMC immunity testing of electric fast transient / burst (EFT) and is applicable to large equipment with overhead cable ports on site. In particular, it relates to an auxiliary device for overhead cables suitable for EFT testing. Background Technology

[0002] Electrical fast transient / burst immunity testing is one of the important items in electromagnetic compatibility testing. When there are switching operations (such as the opening and closing of relays and contactors) or inductive load disconnection in the power system, high-frequency short pulse signals will be generated in the circuit. These interference signals interfere with the normal operation of the equipment through conduction or coupling, often leading to a series of abnormal phenomena such as equipment malfunction, restart, data loss or hardware damage, which endangers the normal operation of electronic equipment.

[0003] In standard GB / T 17626.4-2018 Figure 1 This paper introduces the test setup for overhead cables in electrical fast transient / burst testing. For overhead cable testing, the cable under test should first be led out from the test port, laid horizontally for 0.5m at a height of 0.1m above the sample's upper surface, and then dropped vertically to a reference ground plane. Interference signals are then injected at a 0.5m distance on an insulated support 0.1m above the reference ground plane. Therefore, current conventional testing methods have the following drawbacks: 1) In actual overhead cable laying, since the cables to be tested are generally flexible, it is difficult to guarantee the laying requirements of cables at high altitudes. 2) The height of the test ports of the raised cables is inconsistent among different samples, and the auxiliary facilities required for the arrangement of the raised cables are difficult to find during on-site testing. Utility Model Content

[0004] The purpose of this invention is to solve the technical problems of existing overhead cables, such as the inability of the flexibility to meet the requirements of high-altitude cable laying, and the inability of auxiliary devices to adjust the height due to different test port heights or different arrangement orientations. To this end, an auxiliary device for overhead cables suitable for electrical fast transient / burst testing is provided.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An overhead cable auxiliary device suitable for electrical fast transient / burst testing includes a separately assembled upper cable support, a vertical conduit, and a lower cable base. The bottom of the vertical conduit is rotatably mounted on the lower cable base, and the upper cable support is mounted on the top of the vertical conduit. The vertical conduit is assembled from multiple sections of hollow insulated conduit.

[0006] The following is a further defined technical solution of this utility model: the lower cable base is provided with a base embedding groove, the base embedding groove is embedded in the connecting pipe base, and the bottom of the vertical pipe is fitted into the pipe base.

[0007] The following is a further technical solution of this utility model: the lower cable base is fixedly installed with a tripod bracket, and the bottom of the vertical pipe passes through the support ring of the tripod bracket and is fitted into the pipe base.

[0008] Compared with the prior art, the present invention has the following technical effects: 1. This utility model solves the problem of difficult laying of upper cables due to their flexibility when arranging overhead cables for electrical fast transient / burst immunity by setting up an upper cable support; 2. This utility model relies on the multi-section assembly of the vertical pipeline to meet the testing height adaptability of samples of different heights; 3. This utility model optimizes the storage space occupied by the device and improves its portability through the separate assembly design of each component.

[0009] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a test layout diagram for existing overhead cables; Figure 2 This is a three-dimensional structural schematic diagram of the present invention; Figure 3 This is a side view of the structure of this utility model.

[0012] Reference numerals: 1. Upper cable bracket; 2. Vertical conduit; 3. Lower cable base; 301. Base embedding groove; 4. Conduit base; 5. Tripod bracket; 6. Support ring. Detailed Implementation

[0013] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0014] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0015] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0016] like Figure 2 and 3 As shown, this embodiment provides an overhead cable auxiliary device suitable for electrical fast transient / burst testing, mainly composed of an upper cable support 1, a vertical conduit 2, and a lower cable base 3. The upper cable support 1, vertical conduit 2, and lower cable base 3 are assembled separately, and each part can be independently disassembled and replaced.

[0017] Regarding the installation structure between the upper cable bracket 1 and the vertical conduit 2, specifically: the bottom of the vertical conduit 2 is rotatably mounted on the lower cable base 3, that is: the lower cable base 3 has a base embedding groove 301, the base embedding groove 301 is embedded into the connecting conduit base 4, and the bottom of the vertical conduit 2 is fitted into the conduit base 4. Therefore, when the vertical conduit 2 is changed to different specifications and sizes, only the conduit base 4 with different inner diameters needs to be replaced. Furthermore, the lower cable base 3 is fixedly mounted with a tripod bracket 5, and the bottom of the vertical conduit 2 passes through the support ring 6 of the tripod bracket 5 and is fitted into the conduit base 4. The tripod bracket 5 is used to stabilize the position of the vertical conduit 2.

[0018] Regarding the installation structure between the vertical conduit 2 and the upper cable bracket 1, specifically: the upper cable bracket 1 is installed on the top of the vertical conduit 2, and one end of the upper cable bracket 1 is inserted into the inner cavity at the top of the vertical conduit 2.

[0019] The vertical conduit 2 is assembled from multiple hollow insulated conduits, thus the overall height of the device can be adjusted by increasing or decreasing the number of sections.

[0020] In summary, the upper cable bracket 1 solves the problem of difficult laying of the upper cable due to its flexibility when arranging overhead cables for electrical fast transient / burst immunity. The multi-section assembly of the vertical conduit 2 also meets the test height adaptability of samples of different heights. The separate assembly design of each component optimizes the storage space occupied by the device and improves its portability.

[0021] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model using the disclosed methods and techniques, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. Therefore, all equivalent changes made based on the shape, structure, and principle of this utility model without departing from its technical solution should be covered within the protection scope of this utility model.

Claims

1. An auxiliary device for overhead cables suitable for electrical fast transient / burst testing, characterized in that, It includes a split-assembly upper cable bracket (1), a vertical conduit (2) and a lower cable base (3). The bottom of the vertical conduit (2) is rotatably mounted on the lower cable base (3), and the upper cable bracket (1) is mounted on the top of the vertical conduit (2). The vertical conduit (2) is assembled from multiple hollow insulated conduits.

2. The overhead cable auxiliary device for electrical fast transient / burst testing as described in claim 1, characterized in that, The lower cable base (3) has a base embedding groove (301), which is embedded in the connecting pipe base (4), and the bottom of the vertical pipe (2) is fitted into the pipe base (4).

3. The overhead cable auxiliary device for electrical fast transient / burst testing as described in claim 2, characterized in that, The lower cable base (3) is fixedly installed with a tripod bracket (5), and the bottom of the vertical pipe (2) passes through the support ring (6) of the tripod bracket (5) and is fitted into the pipe base (4).

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