Branch box device for improving voltage withstanding experiment

Abstract

The utility model discloses a junction box device for improving a withstand voltage test, which belongs to the technical field of withstand voltage tests, and comprises a box body, a parallel module and five junction columns, the parallel module and the junction columns are fixed in the box body, the number of the parallel module is only one, the number of the junction columns is five, one end of each junction column can be connected with an experimental cable, and the other end of each junction column can be connected with a cable. And the other end of the branching column can branch out the wire core forming the experimental cable, and the separated wire core is discharged from the bottom of the branching box. The side face of one end of the parallel module is connected with a power line, the side face of the other end of the parallel module is connected with a zero line, and the bottom of the parallel module is provided with a wiring port connected with an experimental cable. By arranging the parallel module, a plurality of experimental cables can be simultaneously connected into an experimental circuit, and a voltage withstanding experiment is carried out on wire cores in the cables; and the branching column is arranged, so that the cable core in the cable can be separated, and the operation amount is reduced. And cable loss caused by experiments is reduced. The cable passing the experiment can be continuously used.

Description

Technical Field

[0001] The utility model relates to a junction box device for improving withstand voltage experiment, belonging to the technical field of withstand voltage test. Background Art

[0002] Power cables are used to transmit and distribute electrical energy. They are often used in urban underground power grids, power station lead-out lines, power supply within industrial and mining enterprises, and underwater transmission lines across rivers and seas. Cables need to undergo a withstand voltage test before they are officially used to ensure that the cables do not fail under normal working conditions. When a failure occurs, it will bring certain dangers and losses to the power system. Therefore, it is necessary to conduct a withstand voltage test on the cables.

[0003] There are many types of cable withstand voltage tests. This experiment uses the power frequency withstand voltage test. The traditional power frequency withstand voltage test can only test one cable alone, which is inefficient and time-consuming. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a junction box device for improving the withstand voltage test, which solves the problem of low efficiency of the withstand voltage test.

[0005] The technical problem to be solved by the utility model is achieved by adopting the following technical solutions: a junction box device for improving the withstand voltage test, comprising

[0006] Box, parallel module, branch column,

[0007] The parallel module and the plurality of branching poles are fixed inside the box, a box door is arranged on the front of the box, a power inlet and a neutral line interface are arranged on the side of the box, the parallel module and the branching poles are arranged inside the box, and a wire core interface is arranged at the bottom of the box.

[0008] Preferably, a total of 5 branching columns are provided.

[0009] Preferably, the parallel module divides the power inlet into five cable interfaces in parallel.

[0010] Preferably, the cable interface can be connected to a cable to be tested, and the cable is connected to a branching post.

[0011] Preferably, the branching post can branch out the wire cores constituting the cable.

[0012] Preferably, the number of the wire cores does not exceed 5.

[0013] The beneficial effects of the utility model are:

[0014] (1) Through the utility model, a parallel module is provided, and multiple cables can be connected to the parallel module at the same time to perform a withstand voltage test on the wire cores in the cables.

[0015] (2) Through the utility model, the wire splitting column is set to separate the wire cores inside the cable, reducing the amount of operation. The loss of the cable caused by the experiment is reduced. The cable that passes the experiment can continue to be used.

[0016] (3) The utility model is easy to operate, has low installation cost and high work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0019] Figure 3 It is a structural schematic diagram of the terminal of the utility model.

[0020] Figure 4 This is a wiring diagram of the utility model.

[0021] In the figure: 1-box, 2-inlet, 3-neutral outlet, 4-parallel module, 5-control switch, 6-indicator light, 7-experimental cable, 8-branching column, 9-wire core, 10-wire core outlet, 11-emergency stop switch. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects of the utility model easier to understand, the utility model is further described below in conjunction with specific embodiments.

[0023] Example 1

[0024] like Figure 1-Figure 3 As shown, a junction box device for improving the withstand voltage test includes a box body 1, a parallel module 4, and a junction column 8.

[0025] The front of the box 1 is provided with a door, through which the parallel module 4 inside the box 1 can be operated and the experimental cable 7 can be set. A parallel module 4 and a plurality of branching posts 8 are arranged inside the box 1. In this embodiment, the number of the branching posts is set to 5.

[0026] The parallel module 4 is horizontally arranged on the upper part of the box 1. One end of the parallel module 4 can be connected to the output line of the output test voltage, and the other end can be connected to the neutral line. The output line enters the distribution box through the line inlet 2 on the side of the box 1 and is connected to the parallel module 4, and the neutral line is connected to the parallel module 4 through the neutral line outlet 3 on the other side of the box 1.

[0027] The bottom of the parallel module 4 is provided with 5 wiring ports, which can be connected to the experimental cable 7. Each wiring port is provided with a control switch 5, which can control whether the experimental cable 7 connected to the wiring port is connected to the overall circuit. An indicator light 6 is provided above the control switch 5, which can determine the state of the control switch 5 to prevent malfunctions.

[0028] The branching column 8 can separate the wire cores 9 constituting the experimental cable 7, and each wire core 9 leaves the box body through the wire core outlet 10 at the bottom of the box body 1 and is connected to the experimental circuit.

[0029] In this embodiment, the shape of the branching column 8 is as follows: Figure 3 As shown, the experimental cable 7 is connected to the larger hole of the branching column 8, and the wire cores 9 constituting the experimental cable 7 are respectively separated from the other end of the branching column 8. The branching column 8 can be evenly divided into two parts in the middle. After one end of the branching column 8 of one part is inserted into the experimental cable 7, the wire core 9 is manually separated and the wire core 9 is inserted into the branching column 8 of the other part. The branching column 8 is connected by a buckle. The bottom of the branching column is provided with a thread, and the bottom of the branching column 8 is connected and fixed to the box 1 by the thread.

[0030] An emergency stop switch 11 is provided on the surface of the box 1, and the emergency stop switch 11 can cut off the circuit and stop the experiment.

[0031] The use steps of the utility model are:

[0032] 1. Remove the branching column 8 from the box body 1 and release the buckle on the branching column 8.

[0033] 2. One end of the test cable 7 passes through the branching post 8 that fixes the test cable 7, and the test cable 7 is released to expose the wire core 9 that constitutes the test cable 7. The wire core 9 passes through the branching post 8 that fixes the wire core 9 at the other end, and then the branching posts 8 are connected by snaps.

[0034] 3. The other end of the experimental cable 7 is set in the parallel module 4, and the branching column 8 is installed below the interface of the parallel module 4.

[0035] The experimental cable needs to be connected from the end of the line inlet 2 close to the parallel module 4 to the end of the neutral line outlet 3. In this embodiment, the experimental cable 7 installed in the parallel module 4 needs to be connected from the right to the left.

[0036] like Figure 4 As shown, Figure 4 The wiring diagram for the entire withstand voltage test is as follows: the control part of the withstand voltage test is connected to 220V AC, and the voltage is increased to the test voltage through a transformer. Then the current is connected to the parallel module 4 through a protection resistor. The parallel module 4 is connected in parallel with a standard high-voltage voltage divider and a spherical gap protection resistor, and a protective spherical gap is connected to the bottom of the spherical gap protection resistor.

[0037] In this embodiment, the wiring method of the cable with less than 5 cores on the branching column 8 is from bottom to top. When conducting experiments, the number of cores of each experimental cable 7 is the same.

[0038] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. 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 protection claimed by the utility model. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A junction box device for improving withstand voltage test, comprising Box, parallel module, branch column, Features: The parallel module and the plurality of branching poles are fixed inside the box, a box door is arranged on the front of the box, a power inlet and a neutral line interface are arranged on the side of the box, the parallel module and the branching poles are arranged inside the box, and a wire core interface is arranged at the bottom of the box.

2. A junction box device for improving withstand voltage test according to claim 1, characterized in that: There are 5 branching columns in total.

3. A junction box device for improving withstand voltage test according to claim 1, characterized in that: The parallel module divides the power inlet into five cable interfaces in parallel.

4. A junction box device for improving withstand voltage test according to claim 3, characterized in that: The cable interface can be connected to a cable to be tested, and the cable is connected to the branching post.

5. A junction box device for improving withstand voltage test according to claim 4, characterized in that: The branching column can branch out the wire cores constituting the cable.

6. A junction box device for improving withstand voltage test according to claim 5, characterized in that: The number of the wire cores does not exceed 5.

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