Control cubicle test equipment

Abstract

The utility model belongs to the technical field of control cubicle test, and particularly relates to control cubicle test equipment. A power supply system is arranged in the test equipment, the power supply system comprises a battery, a power supply conversion unit and a voltage regulating unit, the power supply conversion unit is used for converting the battery into alternating current and / or direct current of a corresponding voltage level, and the voltage regulating unit is used for outputting adjustable alternating current voltage and / or direct current voltage according to a conversion result of the power supply conversion unit. The test equipment can select the test voltage without the line voltage as required to meet the test requirements of the component device and the control cubicle without externally connecting power supplies of various voltage grades through cables, so that the test circuit is simple, the test field is not messy, the problem of inconvenience in external power supply caused by outdoor test is solved, and the test efficiency is improved. And the applicability of the test equipment is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of control cabinet detection, and in particular relates to a control cabinet test device. Background Art

[0002] The control cabinet has functions such as overload, short circuit and phase loss protection, and is widely used in the power, metallurgy and chemical industries. Therefore, the testing and inspection of the control cabinet is particularly important. In the existing technology, the components (such as undervoltage relays, anti-trip relays and thermal relays, etc.) and performance of the control cabinet are usually tested using an external power supply of a traditional control cabinet test bench. However, due to the different voltage levels of the control cabinet, the working voltages of the key components inside are also different. Therefore, the test bench needs to be connected to power supplies of various voltage levels from the outside through cables for testing and inspection. The external line wiring is complicated, and it is inconvenient to connect the external power supply in the outdoor test environment, resulting in poor applicability of the test equipment. When conducting high-voltage level tests, the external line also increases the risk of electric shock to the test personnel at work. Utility Model Content

[0003] The purpose of the utility model is to provide a control cabinet test device to solve the problems of complex external circuits and poor applicability caused by the need for an external power supply in existing control cabinet test equipment.

[0004] In order to solve the above-mentioned technical problems, the present invention provides a control cabinet test equipment, wherein the test equipment is provided with a power supply system, which includes a battery, a power conversion unit and a voltage regulating unit. The power conversion unit is used to convert the output voltage of the battery into AC and / or DC of corresponding voltage levels, and the voltage regulating unit is used to output adjustable AC voltage and / or DC voltage according to the conversion result of the power conversion unit.

[0005] Furthermore, the power conversion unit includes a single-phase inverter module, a three-phase inverter module and a switching power supply, the voltage regulation unit includes a single-phase voltage regulation module, a three-phase voltage regulation module and a DC voltage regulation module, the battery is connected to the input end of the single-phase inverter module, and the output end of the single-phase inverter module is connected to three outputs, the first output is connected to the single-phase voltage regulation module for outputting an adjustable single-phase AC voltage; the second output is connected to the switching power supply and the DC voltage regulation module in sequence for outputting an adjustable DC voltage; the third output is connected to the three-phase inverter module and the three-phase voltage regulation module in sequence for outputting an adjustable three-phase AC voltage.

[0006] Furthermore, the power supply system further includes a resistor, and the output end of the single-phase voltage regulation module is connected in series with the resistor for outputting an adjustable alternating current.

[0007] Furthermore, a leakage protection device is provided between the single-phase inverter module and the single-phase voltage regulating module, and between the three-phase inverter module and the three-phase voltage regulating module.

[0008] Furthermore, the test equipment is also provided with a display module, including a power display module for displaying the battery power, a DC voltage display module for displaying the DC voltage synchronous output value, a single-phase AC voltage display module for displaying the single-phase AC voltage synchronous output value, a three-phase AC voltage display module for displaying the three-phase AC voltage synchronous output value, and an alternating current display module for displaying the alternating current synchronous output value.

[0009] Furthermore, the test equipment is also provided with an output module, including a DC output socket connected to the output end of the DC voltage regulation module, a three-phase output socket connected to the output end of the three-phase voltage regulation module, a single-phase AC output socket connected to the output end of the single-phase voltage regulation module, and an alternating current test terminal connected to the resistor.

[0010] Furthermore, the battery is a rechargeable battery, and the test equipment is provided with a charging interface unit for charging the battery.

[0011] Furthermore, the test equipment is a test cabinet, the battery and the power conversion unit are both arranged in the cabinet, and the adjustable component of the voltage regulating unit is arranged on the cabinet surface.

[0012] Furthermore, a wire trough is provided on one side of the test cabinet.

[0013] Furthermore, a push rod is provided on one side of the test cabinet, and a reversing wheel is provided on the bottom.

[0014] The beneficial effects of the above technical solution are: by improving the test equipment, a power supply system is set up in the test equipment, the battery provides power output, and the output voltage of the battery is converted into AC and / or DC of the corresponding voltage level through the power conversion unit, and then the voltage regulating unit is used to output adjustable AC voltage and / or DC voltage. The test equipment does not need to be connected to power supplies of various voltage levels from the outside through cables, and can select a test voltage that does not contain line voltage as needed to meet the testing requirements of components and control cabinets, making the test circuit simple and the test site uncluttered. At the same time, it solves the problem of inconvenient external power supply caused by outdoor testing, and improves the applicability of the test equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the circuit composition of the power supply system in the test equipment of the utility model;

[0016] Figure 2 This is a three-dimensional rendering of the exterior of the test cabinet of the utility model;

[0017] Figure 3 This is a three-dimensional rendering of the interior of the test cabinet of the utility model;

[0018] Figure 4This is the main view of the test cabinet of the utility model;

[0019] Figure 5 It is a side view of the test cabinet of the utility model;

[0020] Figure 6 This is a top view of the test cabinet of the utility model;

[0021] In the figure: 1-first switch; 2-second switch; 3-third switch; 4-fourth switch; 5-first leakage protection switch; 6-second leakage protection switch; 7-battery indicator; 8-first AC voltage indicator; 9-DC voltage indicator; 10-second AC voltage indicator; 11-single-phase AC voltage indicator; 12-three-phase AC voltage indicator; 13-alternating current indicator; 14-front left door; 15-front right door; 16-single-phase voltage regulator; 17-three-phase voltage regulator; 18-alternating current test terminal; 19-push rod; 20-potentiometer; 21-equipment nameplate; 22-wiring trough; 23-three-phase output socket; 24-DC output socket; 25-single-phase AC output socket; 26-charging port; 27-reversing wheel; 28-resistor; 29-three-phase inverter; 30-single-phase inverter; 31-switching power supply; 32-battery DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clear, the specific implementation methods of the present invention are further described below with reference to the accompanying drawings.

[0023] The utility model improves the traditional test equipment, sets up a power supply system on the basis of the traditional test equipment, configures a battery inside the test equipment, converts the output voltage of the battery into AC and / or DC of the corresponding voltage level through a power conversion unit, and then uses a voltage regulating unit to output adjustable AC voltage and / or DC voltage. The test equipment does not need to be connected to power supplies of various voltage levels from the outside through cables, and relies entirely on the voltage source generated by the test equipment itself to perform tests, making the test circuit simple. At the same time, it solves the problem of inconvenient external power supply caused by outdoor testing, avoids the safety risks caused by exposure of external high-voltage lines, improves the safety of test personnel at work, and makes the test safe and convenient and the test site uncluttered.

[0024] The implementation principle of the power supply system is as follows Figure 1 As shown, the following is a detailed description.

[0025] The test equipment is equipped with a power supply system, which includes a battery, a resistor, a power conversion unit and a voltage regulating unit. The power conversion unit is used to convert the output voltage of the battery into AC and / or DC of the corresponding voltage level, and the voltage regulating unit is used to output adjustable AC voltage and / or DC voltage according to the conversion result of the power conversion unit.

[0026] Specifically, the power conversion unit includes a single-phase inverter module, a three-phase inverter module and a switching power supply; the voltage regulation unit includes a single-phase voltage regulation module, a three-phase voltage regulation module and a DC voltage regulation module; the battery outputs electrical energy for the test equipment; the battery is connected to the input end of the single-phase inverter module; the output end of the single-phase inverter module is connected to three outputs; the first output is connected to the single-phase voltage regulation module for outputting an adjustable single-phase AC voltage, and then connected in series with a resistor to output an adjustable alternating current; the second output is connected in sequence to the switching power supply and the DC voltage regulation module for outputting an adjustable DC voltage; the third output is connected in sequence to the three-phase inverter module and the three-phase voltage regulation module for outputting an adjustable three-phase AC voltage.

[0027] Furthermore, the battery is a rechargeable battery, and the test equipment is also provided with a charging interface unit for charging the battery when the battery power drops to a set value. In this embodiment, the charging interface unit is a charging port, and the charging operation is performed when the battery power drops to 30%. The corresponding set value can also be set according to needs.

[0028] As an implementation method, the battery is configured as a 12V120Ah rechargeable battery, the single-phase inverter module is a single-phase inverter, the three-phase inverter module is a three-phase inverter, the single-phase voltage regulation module is a single-phase voltage regulator, the three-phase voltage regulation module is a three-phase voltage regulator, the DC voltage regulation module is a potentiometer, and the resistor is a ripple resistor with a power of 1000W. Resistors of different specifications can also be configured according to the test requirements of the alternating current. The 12V voltage is transmitted to the single-phase inverter, which converts the DC 12V into AC 220V, and then divided into three outputs: the first is connected to the single-phase voltage regulator to obtain a single-phase AC voltage of 0-220V, and then a resistor is connected in series to obtain an alternating current of 0-4.5A; the second is connected to the switching power supply to convert the AC 220V into DC 250V, and then the DC 0-250V voltage is obtained by adjusting the potentiometer; the third is connected to the three-phase inverter to obtain a three-phase four-wire power supply, that is, a 380V power supply with a neutral wire, and then connected to the three-phase voltage regulator to obtain a voltage of 0-3N380V.

[0029] To facilitate control of power output and ensure power safety, a first switch, a second switch, a third switch, and a fourth switch are respectively provided between the battery and the single-phase inverter module, between the single-phase inverter module and the switching power supply, between the switching power supply and the potentiometer, and between the single-phase inverter module and the three-phase inverter module. In this embodiment, the first switch and the third switch are 16A DC two-gang switches, and the second switch and the fourth switch are 16A AC two-gang switches.

[0030] Leakage protection devices are installed between the single-phase inverter module and the single-phase voltage regulator module, and between the three-phase inverter module and the three-phase voltage regulator module. The test equipment housing is grounded, further reducing the risk of electric shock for test personnel during work and ensuring their personal safety. In this embodiment, the leakage protection devices consist of a first leakage protection switch (LSS) and a second leakage protection switch (LSS). The first LSS is a 16A two-gang leakage protection switch, installed between the single-phase inverter module and the single-phase voltage regulator module. The second LSS is an AC four-gang leakage protection switch, installed between the three-phase inverter module and the three-phase voltage regulator module.

[0031] The test equipment is also provided with a display module, including a power display module for displaying the battery power, a DC voltage display module for displaying the DC voltage synchronous output value, a single-phase AC voltage display module for displaying the single-phase AC voltage synchronous output value, a three-phase AC voltage display module for displaying the three-phase AC voltage synchronous output value, and an alternating current display module for displaying the alternating current synchronous output value. In this embodiment, the display module is a display.

[0032] The test equipment is also provided with an output module for testing, including a DC output socket connected to the output end of the DC voltage regulation module, a three-phase output socket connected to the output end of the three-phase voltage regulation module, a single-phase AC output socket connected to the output end of the single-phase voltage regulation module, and an alternating current test terminal connected to the resistor.

[0033] As an implementation method, the test equipment in this embodiment is a test cabinet. Figure 2-Figure 6 As shown, the battery 32, resistor 28, three-phase inverter 29, single-phase inverter 30 and switching power supply 31 are all arranged in the cabinet, the adjustable components of the single-phase voltage regulator 16, three-phase voltage regulator 17 and potentiometer 20 are arranged on the cabinet surface, and the remaining components are arranged in the cabinet; the cabinet surface is also provided with an alternating current test terminal 18, a first switch 1, a second switch 2, a third switch 3, a fourth switch 4, a first leakage protection switch 5, a second leakage protection switch 6, a power display 7, a first AC voltage display 8 for displaying the input side voltage value of the switching power supply 31, a DC voltage display 9 for displaying the synchronous output value of the DC voltage, a second AC voltage display 10 for displaying the input side voltage value of the single-phase voltage regulator 16, a single-phase AC voltage display 11 for displaying the synchronous output value of the single-phase AC voltage, a three-phase AC voltage display 12 for displaying the synchronous output value of the three-phase AC voltage, and an AC current display 13 for displaying the synchronous output value of the alternating current. The three-phase output socket 23 , the DC output socket 24 , the single-phase AC output socket 25 and the charging port 26 are arranged on the cabinet door of the test cabinet. In this embodiment, they are all arranged on the front right door 15 . In other embodiments, they can also be arranged on the front left door 14 .

[0034] A wire trough 22 is also provided on one side of the test cabinet for storing the cables required for the test; an equipment nameplate 21 is provided on the test cabinet for easy equipment management; a push rod 19 is provided on one side of the test cabinet, and a reversing wheel 27 is provided at the bottom to facilitate the movement of the equipment and convenient transportation; as a preferred embodiment, the reversing wheel 27 is an ultra-quiet reversing wheel.

[0035] This new control cabinet test equipment eliminates the need for an external three-phase, four-wire power supply, improving the safety of testers and other personnel. It simplifies external wiring and eliminates the inconvenience of connecting to an external power supply during outdoor testing. It allows for selection of test voltages and currents that exclude line voltages, covering testing of components and control cabinets up to AC380V, DC250V, AC220V, and AC4.5A, meeting the requirements for testing 126kV and other control cabinet levels. It also features a leakage protector, significantly reducing the risk of electric shock for testers. The large-capacity battery ensures a long standby time, eliminating the need for frequent charging and improving the convenience and stability of the test equipment.

Claims

1. A control cabinet test equipment, characterized in that: The test equipment is provided with a power supply system, which includes a battery, a power conversion unit and a voltage regulating unit. The power conversion unit is used to convert the output voltage of the battery into AC and / or DC of corresponding voltage levels, and the voltage regulating unit is used to output adjustable AC voltage and / or DC voltage according to the conversion result of the power conversion unit.

2. The control cabinet test equipment according to claim 1, characterized in that: The power conversion unit includes a single-phase inverter module, a three-phase inverter module and a switching power supply; the voltage regulation unit includes a single-phase voltage regulation module, a three-phase voltage regulation module and a DC voltage regulation module; the battery is connected to the input end of the single-phase inverter module; the output end of the single-phase inverter module is connected to three outputs, the first output is connected to the single-phase voltage regulation module for outputting an adjustable single-phase AC voltage; the second output is connected in sequence to the switching power supply and the DC voltage regulation module for outputting an adjustable DC voltage; the third output is connected in sequence to the three-phase inverter module and the three-phase voltage regulation module for outputting an adjustable three-phase AC voltage.

3. The control cabinet test equipment according to claim 2, characterized in that: The power supply system further includes a resistor, and the output end of the single-phase voltage regulating module is connected in series with the resistor for outputting an adjustable alternating current.

4. The control cabinet test equipment according to claim 2, characterized in that: A leakage protection device is provided between the single-phase inverter module and the single-phase voltage regulating module, and between the three-phase inverter module and the three-phase voltage regulating module.

5. The control cabinet test equipment according to claim 3 or 4, characterized in that: The test equipment is also provided with a display module, including a power display module for displaying the battery power, a DC voltage display module for displaying the DC voltage synchronous output value, a single-phase AC voltage display module for displaying the single-phase AC voltage synchronous output value, a three-phase AC voltage display module for displaying the three-phase AC voltage synchronous output value, and an alternating current display module for displaying the alternating current synchronous output value.

6. The control cabinet test equipment according to claim 3 or 4, characterized in that: The test equipment is also provided with an output module, including a DC output socket connected to the output end of the DC voltage regulation module, a three-phase output socket connected to the output end of the three-phase voltage regulation module, a single-phase AC output socket connected to the output end of the single-phase voltage regulation module, and an alternating current test terminal connected to the resistor.

7. The control cabinet test equipment according to claim 1, characterized in that: The battery is a rechargeable battery, and the test equipment is provided with a charging interface unit for charging the battery.

8. The control cabinet test equipment according to claim 1, characterized in that: The test equipment is a test cabinet, the battery and the power conversion unit are both arranged in the cabinet, and the adjustable component of the voltage regulating unit is arranged on the cabinet surface.

9. The control cabinet test equipment according to claim 8, characterized in that: A wire trough is also provided on one side of the test cabinet.

10. The control cabinet test equipment according to claim 8, characterized in that: A push rod is provided on one side of the test cabinet, and a reversing wheel is provided on the bottom.

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