Test device for power supply voltage test and power-on test

Abstract

The invention provides a test device for power supply voltage test and power-on test, which comprises a mounting box body, a workbench and a test assembly, and is characterized in that the test assembly comprises a voltage regulator, a plurality of variable loads, a resistance adjusting knob and an ampere meter, and the voltage regulator forms a plurality of test loops with the variable loads and the ampere meter respectively; the voltage regulator is connected to the input end of the tested power supply, the output end of the tested power supply is selectively connected with the variable load, so that the tested power supply is connected into the test loop, the resistance adjusting knob is connected with the variable load, and the ampere meter is used for measuring the current of the test loop. According to the test device designed by the invention, the tested power supply can complete voltage test and power-on test under the conditions of no load, full load, overload and voltage bias, and a plurality of formed test loops can meet various types of power supply tests; the problems that only one power supply can be inspected independently and the operation is tedious are solved, inspection of multiple power supplies can be measured through one-time electrification, and the working efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of power supply detection devices, and in particular relates to a test device for power supply voltage testing and power-on testing. Background Art

[0002] Re-inspection of purchased power supply components, such as integrated power supplies and medium-frequency static power supplies, is a necessary item before they enter the factory. According to the process requirements for the assembly of other components, voltage tests and power-on tests must be carried out on purchased power supply components under no-load, full-load, overload and voltage deviation conditions.

[0003] At present, there is no complete re-inspection equipment that can complete the voltage test and power-on test of the integrated power supply and medium-frequency static transformer power supply that are re-inspected at the factory. The re-inspection is only carried out with the help of simple tooling temporarily assembled with circuit breakers and resistors. The whole re-inspection process cannot guarantee safety and takes a lot of time. At the same time, different purchased power supply components have different performances, and the requirements at the output end also vary greatly, making the re-inspection process cumbersome. Summary of the invention

[0004] The purpose of the present invention is to solve the technical problems in the prior art that the purchased power supply components have no special voltage test and power-on test devices, which makes the re-inspection process cumbersome and cannot ensure the safety of detection, and provides a test device for power supply voltage test and power-on test.

[0005] To achieve the above purpose, the technical solution provided by the present invention is:

[0006] A test device for power supply voltage test and power-on test comprises an installation box, a workbench and a test assembly; the test assembly comprises a voltage regulator, a plurality of variable loads, a resistance adjustment knob and an ammeter; the voltage regulator and the plurality of variable loads are installed in the installation box; the ammeter and the plurality of resistance adjustment knobs are installed on the workbench; the workbench is installed on the top surface of the installation box; the voltage regulator respectively forms a plurality of test loops with the plurality of variable loads and the ammeter; the voltage regulator is connected to the input end of the power supply under test, the output end of the power supply under test can be selectively connected to the variable load respectively, so that the power supply under test is connected to the test loop, the plurality of resistance adjustment knobs are respectively connected to the variable loads in the corresponding test loops, and are used to adjust the loads of the test loops, and the ammeter is used to measure the current of the test loops.

[0007] Furthermore, the number of variable loads and ammeters is consistent with the number of test loops and is designed according to the number of output terminals of the power supply under test.

[0008] Furthermore, the variable load includes a sliding rheostat and a disc adjustable resistor; each group of output terminals of the power supply under test is selectively connected to the sliding rheostat, or the disc adjustable resistor, or the sliding rheostat and the disc adjustable resistor in series according to its current and power.

[0009] Furthermore, a fan is provided inside the installation box to dissipate heat inside the installation box.

[0010] Furthermore, universal wheels are respectively arranged at the four corner edges of the outer bottom surface of the installation box; and the back plate of the installation box is detachably connected to the installation box.

[0011] Furthermore, a plurality of wiring terminals are provided on the workbench, the number of the wiring terminals being consistent with the number of the test circuits, and connected to the variable load.

[0012] The advantages of the present invention are:

[0013] The test device designed by the present invention enables the tested power supply to complete voltage testing and power-on testing under no-load, full-load, overload and voltage deviation conditions, and the multiple test circuits formed can meet the requirements of various types of power supply tests. Based on the current and power of the output end of different types of power supplies, a suitable test circuit is selected for access; the input voltage of the accessed power supply is adjusted by a voltage regulator, and the resistance value of the variable load in the corresponding test circuit is changed by a resistance adjustment knob to adjust the load of the power supply; the test components are all installed in an installation box, and the connecting wires are arranged in order in the installation box, thereby ensuring the safety of the detection; the problem that only one power supply can be accepted separately and the operation is cumbersome is solved, and the acceptance of multiple power supplies can be achieved by powering on at one time, and the multiple loads set can meet the measurement of power supplies of various different models, without the need for temporary assembly of the test circuit, thereby improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The features and advantages of the present invention will become more readily understood through the following description with reference to the accompanying drawings, which are not drawn to scale and in which some features are exaggerated or minimized to show details of particular components:

[0015] Figure 1 is an assembly diagram of the test device of the present invention;

[0016] Figure 2 is a wiring diagram of the test assembly in the embodiment;

[0017] Figures 3 to 9 Schematic diagram of wiring between different integrated power supply output terminals and variable loads in the embodiments;

[0018] In the figure: 1-sliding rheostat; 2-disc adjustable resistor; 3-voltage regulator; 4-resistance adjustment knob; 5-display panel. DETAILED DESCRIPTION

[0019] The present invention will be described in detail below with reference to the accompanying drawings by means of exemplary embodiments of the present invention. It should be noted that the following detailed description of the present invention is only for the purpose of illustration, and is not intended to limit the present invention.

[0020] The present invention provides a test device for power supply voltage test and power-on test, which is used to re-test external power supply components, such as integrated power supply and medium frequency static variable power supply, and perform voltage test and power-on test on the power supply under no-load, full-load, overload and voltage deviation conditions.

[0021] like Figure 1 As shown, the test device provided by the present invention includes a mounting box, a workbench and a test assembly.

[0022] The installation box can be in the shape of a rectangular parallelepiped with an open top, and includes two left and right side panels, a front panel and a back panel, and a detachable upper panel on the top.

[0023] The test assembly includes a voltage regulator 3, multiple variable loads, a resistance adjustment knob 4, and an ammeter; the voltage regulator 3, multiple variable loads, and multiple ammeters are installed in the installation box; multiple resistance adjustment knobs 4 are installed on a workbench, and the workbench is installed on the top surface of the installation box. A display panel 5 is provided on the workbench for displaying the reading of the ammeter. The voltage regulator 3 forms multiple test loops with multiple variable loads and ammeters respectively; the voltage regulator 3 is connected to the input end of the power supply under test, and the output end of the power supply under test can be selectively connected to the variable loads respectively, so that the power supply under test is connected to the test loop, and multiple resistance adjustment knobs 4 are respectively connected to the variable loads in the corresponding test loops for adjusting the loads of the test loops. The ammeter is used to measure the current of the test loop, so as to clearly observe which test loop has a fault and facilitate troubleshooting. The ammeter selects a digital ammeter to ensure the accuracy of the entire detection process.

[0024] The test device designed by the present invention enables the power supply under test to complete voltage testing and power-on testing under no-load, full-load, overload and voltage deviation conditions. The multiple test circuits formed can meet the requirements of various types of power supply tests. Based on the current and power of the output ends of different types of power supplies, a suitable test circuit is selected for access. The input voltage of the power supply under test is adjusted by the voltage regulator 3, and the resistance value of the variable load in the corresponding test circuit is changed by the resistance adjustment knob 4 to adjust the load of the power supply under test. The problem that only one power supply can be accepted separately and the operation is cumbersome is solved. One-time power-on measurement and acceptance of multiple power supplies are realized, which improves work efficiency. The multiple loads set can meet the measurement of power supplies of various different models without the need for temporary assembly of test circuits.

[0025] The number of variable loads and ammeters is consistent with the number of test loops, which is determined by the number of output terminals of the power supply under test and can be increased or decreased according to actual conditions.

[0026] The variable load includes a sliding rheostat 1 and a disc adjustable resistor 2; each group of output terminals of the power supply under test is connected to the sliding rheostat 1, or the disc adjustable resistor 2, or the sliding rheostat 1 and the disc adjustable resistor 2 in series according to its current and power selection.

[0027] Based on the current and power of each group of output terminals of the power supply under test, a matching variable load is selected for access. The variable load can be composed of a single sliding rheostat 1, a single disc adjustable resistor 2, or a sliding rheostat 1 and a disc adjustable resistor 2 in series, so as to complete voltage testing and power-on testing of the power supply under no-load, full-load, overload and voltage deviation conditions.

[0028] The back plate of the installation box is provided with heat dissipation holes, and a fan is provided inside the installation box for dissipating heat inside the installation box.

[0029] Universal wheels are provided at the four corners of the outer bottom of the installation box to facilitate movement and enable it to work in any powered environment. The back panel of the installation box can be detachably connected to the installation box, which is convenient for installation, maintenance and debugging of components.

[0030] There are multiple wiring terminals on the workbench. The number of wiring terminals is consistent with the test circuits and connected to the variable load. This can avoid wiring errors and facilitate the simultaneous measurement and acceptance of multiple power supplies.

[0031] like Figure 2 As shown, the integrated power supply and the medium frequency static variable power supply can be measured simultaneously, and the integrated power supply and the medium frequency static variable power supply can be powered on respectively by switches K1 and K2.

[0032] In this embodiment, the integrated power supply is accepted. The test components include a voltage regulator 3, 7 variable loads, a resistance adjustment knob 4 and an ammeter; the voltage regulator 3 and the 7 variable loads and the ammeter respectively form 7 test loops, which can be connected to the 7 output terminals of multiple integrated power supplies and perform synchronous measurements on multiple integrated power supplies.

[0033] The input end of the test device is connected to AC220V, and a 32A protective air switch is connected through a cable at the front end of the input end of the test device; a power-on control circuit is composed of a voltage regulator 3, a protective air switch and a contactor, two sliding rheostats 1, 7 disc adjustable resistors 2 and 7 resistance adjustment knobs 4 constitute a variable load, and 7 ammeters constitute a test display circuit.

[0034] The integrated power supply is powered at 176V~264V. The voltage input to the integrated power supply is adjusted to 176V~264V through the voltage regulator 3. The variable load in each test circuit is adjusted using the resistance adjustment knob 4. The value of the ammeter in the test circuit is observed, which is the current value at the output end of the integrated power supply.

[0035] Adjust the integrated power supply to no-load, full-load, overload and voltage deviation conditions, conduct voltage tests respectively, and conduct power-on tests after powering on for one hour; under different technical requirements, use an ammeter to check the output current of each output terminal, and use a multimeter to measure the output voltage directly at the output terminal of the integrated power supply. If the output current and output voltage of each item meet the requirements, it means that the integrated power supply re-inspected in the factory meets the requirements. The test circuit power-on of the test device can be controlled by setting a contactor to reduce direct operation by personnel and ensure acceptance safety.

[0036] The assembly layout of the test device is as follows Figure 1 As shown, the upper panel and the back panel of the installation box are made of steel plates separately, and the rest of the installation box and the workbench are welded and polished with steel plates, and corresponding holes are made according to the installation position of the test component, and then the upper panel and the back panel are assembled on the installation box. After the installation box and the workbench are spray-painted as a whole, four universal wheels are installed. When installing and wiring the test component, first open the upper panel and remove the back panel, install the voltage regulator 3 and the disc adjustable resistor 2 into the installation box, and fasten them with bolts and nuts. The side wall of the installation box is provided with a mounting strip, and the sliding rheostat 1 is installed on the inner side of the mounting strip. Fasten it with bolts and nuts, install the ammeter on the installation box, and the workbench is provided with a display panel 5 for displaying the reading of the ammeter. Install the 7 resistance adjustment knobs 4 into the card slots used for the workbench.

[0037] like Figures 3 to 9 As shown in the figure, 7 integrated power supply output terminals are listed respectively, and 7 kinds of variable loads are connected respectively. The power resistance in the test circuit is changed by using 7 resistance adjustment knobs 4, and the output current value and output voltage of 7 groups of integrated power supply output terminals can be tested at the same time. At the same time, multiple integrated power supplies are inspected and accepted, and the original on-site temporary assembly and only one unit can be measured are changed to the existing one that can complete the test of multiple integrated power supplies at one time, which greatly improves the work efficiency.

[0038] According to the current and power at the output end of the power supply under test, the variable load selection in the test loop is selected as shown in Table 1.

[0039] Table 1 Corresponding selection table of power supply and variable load

[0040]

[0041] Table 1 lists four types of power supplies. Select the variable load to be connected according to the load resistance range. For example, one of the integrated power supplies has a rated power of 720W, a maximum current of 30A, an output voltage of DC24V, a current range of 15 to 30A, and a required load resistance range of 0.8 to 1.6 ohms. It is selected to be connected to BX7 sliding rheostat 1. The resistance range of BX7 sliding rheostat 1 is between 0 and 1.7 ohms, and the rated power is 1530W. Therefore, it meets the use requirements. If connected as follows Fig. 9 shown.

[0042] The test device designed in this embodiment adopts a miniaturized and lightweight structure. Control buttons can be set on the workbench. The button control saves the use space of the workbench and is easier to operate. The back panel of the installation box is detachable to facilitate later maintenance. A fan is installed to dissipate heat and improve working stability. The ammeter is selected accordingly, and the test accuracy is improved to a certain extent. It can provide a universal platform for the AC220V power supply re-inspection test of various types of products in the factory.

[0043] Finally, it should be noted that the features mentioned and / or shown in the above description of the exemplary embodiments of the present invention may be combined in the same or similar manner into one or more other embodiments, combined with the features in other embodiments or substituted for the corresponding features in other implementations. The technical solutions obtained by these combinations or substitutions shall also be deemed to be included in the protection scope of the present invention.

Claims

1. A test device for power supply voltage test and power-on test, characterized in that: Including installation box, workbench and test components; The test assembly includes a voltage regulator, and a plurality of variable loads, a resistance adjustment knob, and an ammeter; The voltage regulator, the plurality of variable loads and the plurality of ammeters are installed in the installation box; the plurality of resistance adjustment knobs are installed on the workbench; the workbench is installed on the top surface of the installation box, and a display panel is provided on the workbench for displaying the readings of the ammeters; The voltage regulator forms multiple test loops with multiple variable loads and the ammeter respectively; the voltage regulator is connected to the input end of the power supply under test, and the output end of the power supply under test can be selectively connected to the variable loads respectively, so that the power supply under test is connected to the test loop, and the multiple resistance adjustment knobs are respectively connected to the variable loads in the corresponding test loops for adjusting the loads of the test loops, and the ammeter is used to measure the current of the test loop.

2. The test device according to claim 1, characterized in that: The number of the variable loads and the ammeters is consistent with the number of the test loops and is designed according to the number of output terminals of the power supply under test.

3. The test device according to claim 1 or 2, characterized in that: The variable load includes a sliding rheostat and a disc adjustable resistor; Each group of output terminals of the power supply under test is selectively connected to the sliding rheostat, or the disc adjustable resistor, or the sliding rheostat and the disc adjustable resistor connected in series according to its current and power.

4. The test device according to claim 1 or 2, characterized in that: The installation box is provided with a fan for dissipating heat inside the installation box.

5. The test device according to claim 1 or 2, characterized in that: Universal wheels are respectively arranged at the four corner edges of the outer bottom surface of the installation box; and the rear back plate of the installation box is detachably connected to the installation box.

6. The test device according to claim 1 or 2, characterized in that: The workbench is provided with a plurality of wiring terminals, the number of which is the same as the number of the test loops, and the wiring terminals are connected to the variable load.

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