Transformer insulation and voltage resistance test clamp

Abstract

The utility model discloses a transformer insulation withstand voltage test fixture, which comprises a fixture bottom plate, a fixed plate and a conductive band, the fixture bottom plate is provided with a divider resistor and a diode, the divider resistor is electrically connected with the diode, and the fixed plate and the conductive band are respectively arranged on the fixture bottom plate. According to the utility model, the insulation and voltage resistance test of the transformer is realized, and the problem of low efficiency of the insulation and voltage resistance test of the transformer is solved; the test fixture is simple in structure, efficient, low in cost and convenient to maintain; the size of the test fixture is minimized, so that the test fixture is convenient to use and transport; according to the utility model, the divider resistor and the light emitting diode which are matched are used, so that the reliability and the stability of a test result are ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of test fixtures, and in particular relates to a transformer insulation withstand voltage test fixture. Background Art

[0002] The current electronic industry is developing rapidly towards miniaturization, integration, high frequency, and high reliability, which also puts forward higher requirements on the military electronic components used. The transformer is not only required to have small leakage inductance, small overshoot, and short rise time, but also small size, strong common-mode suppression capability, good frequency characteristics, long service life, and high reliability.

[0003] With the development of technology, the requirements for transformers in aerospace engineering are becoming increasingly higher. The insulation withstand voltage of the transformer is an important indicator of transformer performance. In order to further improve the reliability of the transformer and the efficiency of insulation withstand voltage testing during production, a fixture is needed to test the insulation withstand voltage value of the transformer to determine whether the performance of the transformer meets the aerospace-grade application requirements.

[0004] Patent document No. CN220854922U discloses a multifunctional transformer testing tool for testing transformers, comprising: a workbench, a base, an inductance test assembly, an insulation withstand voltage test assembly, and an inter-turn withstand voltage test assembly; the base is provided with a limit slot, and a first terminal opening is provided on the bottom wall of the limit slot; the base is provided with a second terminal opening, and the base is provided with a test cavity; the base is provided with an inductance test slot on the outer wall, and one end of the inductance test slot is connected to the test cavity; this solution provides a multifunctional transformer testing tool, which can simultaneously perform inductance testing, insulation withstand voltage testing, and inter-turn withstand voltage testing on the transformer by installing the inductance test assembly, insulation withstand voltage test assembly, and inter-turn withstand voltage test assembly on the workbench. The tool clamps the transformer by limiting the limit slot, but cannot clamp and test multiple transformers at the same time. At the same time, the technical problem to be solved by the tool is different from that of the present application. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a transformer insulation withstand voltage test fixture.

[0006] The utility model is achieved through the following technical solutions.

[0007] The utility model provides a transformer insulation withstand voltage test fixture, comprising a fixture base plate, a fixing plate and a conductive belt, wherein a voltage divider resistor and a diode are arranged on the fixture base plate, the voltage divider resistor and the diode are electrically connected, and the fixing plate and the conductive belt are respectively arranged on the fixture base plate.

[0008] Preferably, the length of the fixture bottom plate is equal to or greater than the length of the fixing plate, a plurality of holes A and a plurality of test lines are provided on the fixture bottom plate, and the voltage divider resistor, diode and test lines are electrically connected respectively.

[0009] Preferably, the voltage-dividing resistors, diodes and test lines are grouped into several groups and connected in parallel.

[0010] Preferably, the fixing plate is provided with sockets and holes B, and a plurality of the sockets are linearly distributed.

[0011] Preferably, the socket is rectangular and is coaxially arranged in the middle of the fixing plate.

[0012] Preferably, the conductive belt is ring-shaped, the width of the conductive belt is greater than the wide width of the fixing plate, and the conductive belt surrounds the fixing plate.

[0013] Preferably, the fixture bottom plate is configured with rounded corners, one side of the fixture bottom plate is the positive electrode, and the other side of the fixture bottom plate is the negative electrode.

[0014] Preferably, the fixing plate is arranged with rounded corners, one side of the fixing plate is the positive electrode, and the other side of the fixing plate is the negative electrode.

[0015] The beneficial effects of the present invention are:

[0016] The utility model realizes the transformer insulation withstand voltage test, and solves the problem of low efficiency of transformer insulation withstand voltage test; the test fixture has a simple structure, high efficiency, low cost, and is easy to maintain; the test fixture volume is minimized, and the use and transportation of the test fixture are convenient; the utility model uses matching voltage divider resistors and light-emitting diodes, and ensures the reliability and stability of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 This is a structural diagram of the utility model in which the fixing plate is fixed to the bottom plate of the fixture;

[0019] Figure 3 This is a structural diagram of the base plate of the fixture of the utility model;

[0020] Figure 4 It is a structural diagram of the fixed plate of the utility model;

[0021] Figure 5 It is a schematic structural diagram of the conductive tape of the utility model;

[0022] In the figure: 1- fixture base, 11- hole A, 2- fixing plate, 21- socket, 22- hole B, 3- conductive tape, 4- voltage divider resistor, 5- diode, 6- test lead. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the described solution.

[0024] Example:

[0025] like Figures 1 to 5 As shown, a transformer insulation withstand voltage test fixture includes a fixture base plate 1, a fixed plate 2 and a conductive tape 3. A voltage divider resistor 4 and a diode 5 are set on the fixture base plate 1. The voltage divider resistor 4 and the diode 5 are electrically connected. The fixed plate 2 and the conductive tape 3 are respectively set on the fixture base plate 1. The conductive tape 3 is made of copper. The voltage divider resistor 4 is a resistor that matches the test electrical parameters required by the transformer.

[0026] The length of the fixture base plate 1 is equal to or greater than that of the fixing plate 2 . A plurality of holes A11 and a plurality of test lines 6 are provided on the fixture base plate 1 . The voltage divider resistor 4 , the diode 5 and the test lines 6 are electrically connected respectively.

[0027] The voltage divider resistors 4, diodes 5, and test leads 6 are grouped into several groups and connected in parallel. Metal clamps are attached to the test leads 6 to clamp different pins on the capacitor product for testing. Ten groups of test leads 6 are connected in parallel, allowing for simultaneous testing of ten products. Each group is described in area a. These groups are located on both sides of the fixing plate 2 and conductive strip 3 area. Whether the tested product is faulty is determined by whether the diodes 5 illuminate.

[0028] The fixing plate 2 is provided with sockets 21 and holes B22. Sockets 21 are arranged in a linear pattern. Sockets 21 are used to secure magnets for testing. Holes B22 and A11 can be threaded holes, with hole B22 positioned corresponding to hole A11. Bolts can be inserted through holes B22 and A11 to secure the fixing plate 2 to the fixture base plate 1.

[0029] The socket 21 is rectangular and is coaxially arranged in the middle of the fixing plate 2 .

[0030] The conductive belt 3 is ring-shaped, the width of the conductive belt 3 is greater than the width of the fixing plate 2 , and the conductive belt 3 surrounds the fixing plate 2 .

[0031] The fixture bottom plate 1 is set with rounded corners, one side of the fixture bottom plate 1 is the positive electrode, and the other side of the fixture bottom plate 1 is the negative electrode.

[0032] The fixing plate 2 is configured with rounded corners, one side of the fixing plate 2 is the positive electrode, and the other side of the fixing plate 2 is the negative electrode.

[0033] During use, a magnet is placed on the socket 21, and the transformer product is magnetically attracted to the magnet to fix the transformer product. The clamp of the test line 6 clamps the pins of the transformer product so that they contact the group of the voltage divider resistor 4, the diode 5 and the test line 6. After power is turned on, whether the diode 5 lights up can be used to determine whether the product has a fault.

Claims

1. A transformer insulation withstand voltage test fixture, characterized by: The invention comprises a fixture base plate (1), a fixing plate (2) and a conductive belt (3); a voltage divider resistor (4) and a diode (5) are arranged on the fixture base plate (1); the voltage divider resistor (4) and the diode (5) are electrically connected; and the fixing plate (2) and the conductive belt (3) are respectively arranged on the fixture base plate (1).

2. A transformer insulation withstand voltage test fixture according to claim 1, characterized in that: The length of the fixture base plate (1) is equal to or greater than the length of the fixed plate (2). A plurality of holes A (11) and a plurality of test lines (6) are provided on the fixture base plate (1). The voltage divider resistor (4), the diode (5) and the test lines (6) are electrically connected respectively.

3. The transformer insulation withstand voltage test fixture according to claim 2, characterized in that: The voltage dividing resistors (4), diodes (5) and test lines (6) are grouped into several groups and connected in parallel.

4. The transformer insulation withstand voltage test fixture according to claim 1, wherein: The fixing plate (2) is provided with a socket (21) and a hole B (22), and a plurality of the sockets (21) are linearly distributed.

5. The transformer insulation withstand voltage test fixture according to claim 4, characterized in that: The socket (21) is rectangular and is coaxially arranged in the middle of the fixing plate (2).

6. The transformer insulation withstand voltage test fixture according to claim 1, characterized in that: The conductive belt (3) is ring-shaped, the width of the conductive belt (3) is greater than the wide width of the fixed plate (2), and the conductive belt (3) surrounds the fixed plate (2).

7. The transformer insulation withstand voltage test fixture according to claim 1, characterized in that: The fixture bottom plate (1) is arranged with rounded corners, one side of the fixture bottom plate (1) is a positive electrode, and the other side of the fixture bottom plate (1) is a negative electrode.

8. The transformer insulation withstand voltage test fixture according to claim 1, characterized in that: The fixing plate (2) is arranged with rounded corners, one side of the fixing plate (2) is a positive pole, and the other side of the fixing plate (2) is a negative pole.

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