Impulse voltage testing device

Abstract

The application provides an impulse voltage testing device, and belongs to the field of testing instrument structure. The impulse voltage testing device comprises a power input interface, a protection module arranged at the output end of the power input interface, a control module, a first voltage output module and a second voltage output module arranged at the output end of the protection module, the control module controls the output voltage of the first voltage output module and the second voltage output module, the first voltage output module is used for providing normal working voltage, and the second voltage output module is used for providing impulse voltage. The application further comprises a power output interface connected with the first voltage output module and the second voltage output module respectively. The application has the beneficial effect of effectively testing the impulse voltage of the equipment, avoiding the damage of the equipment caused by unstable working voltage, and improving the reliability and adaptability of the equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of test instrument structure, in particular to a surge voltage testing device. BACKGROUND

[0002] The normal output voltage of some national power grid is 230V 50Hz, and the error range is ±10%. The voltage of this country often exceeds the standard error, and the highest voltage output is AC 260-270V 50Hz, which causes the equipment to not work or be seriously damaged. In order to make the newly developed equipment better adapt to the demand of underdeveloped countries with unstable voltage, it is necessary to design a voltage surge tester to test and evaluate the reliability of new equipment. SUMMARY

[0003] In order to solve the problems in the prior art, the present application provides a surge voltage testing device.

[0004] The surge voltage testing device of the present application comprises a power input interface, a protection module arranged at the output end of the power input interface, a control module, a first voltage output module and a second voltage output module arranged at the output end of the protection module, the control module controls the output voltage of the first voltage output module and the second voltage output module, the first voltage output module is used to provide normal working voltage, and the second voltage output module is used to provide surge voltage, and the device further comprises a power output interface connected with the first voltage output module and the second voltage output module respectively.

[0005] The present application is further improved, and the surge voltage testing device comprises a power input interface, a protection module arranged at the output end of the power input interface, a control module, a first voltage output module and a second voltage output module arranged at the output end of the protection module, the control module controls the output voltage of the first voltage output module and the second voltage output module, the first voltage output module is used to provide normal working voltage, and the second voltage output module and the first voltage output module are used to provide surge voltage together, and the device further comprises a power output interface connected with the first voltage output module and the second voltage output module respectively.

[0006] The present application is further improved, and the surge voltage testing device further comprises a power switch arranged between the power input interface and the protection module, the power switch is a double-blade switch control module, comprising a first switch unit for controlling the switch of the first voltage output module and a second switch unit for controlling the switches of the second voltage output module and the control module respectively.

[0007] The present application is further improved, and the first voltage output module comprises an isolation transformer T101 and an alternating current contactor JD-102 arranged at the output end of the isolation transformer T101, and the inductive coil of the alternating current contactor JD-102 is connected with the control module.

[0008] The second voltage output module further comprises a step-up transformer T102 and an AC contactor JD-101 arranged at the output end of the step-up transformer T102, and the inductive coil of the AC contactor JD-101 is connected with the control module.

[0009] The control module is a digital display time relay with a digital display.

[0010] The application is further improved, and further comprises a voltmeter V101 for measuring the output voltage of the power supply output interface.

[0011] The application is further improved, and the protection module comprises a fuse F101.

[0012] Compared with the prior art, the application has the beneficial effects that: for different working voltages, specific burst voltages can be outputted, so that the equipment can be effectively tested by the burst voltage, and the damage of the equipment caused by unstable working voltage can be avoided, thereby improving the reliability and adaptability of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the solutions in the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0014] Figure 1 It is a structural schematic diagram of the application;

[0015] Figure 2 It is a circuit schematic diagram of an embodiment of the application. DETAILED DESCRIPTION

[0016] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the specification of the application only for the purpose of describing specific embodiments, and is not intended to limit the application; the specification and claims of the application and the above description of the drawings, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. The specification and claims of the application or the above description of the drawings, the terms "first", "second", etc. are used to distinguish different objects, and are not used to describe a specific order.

[0017] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0018] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0019] like Figure 1 As shown, as a first embodiment of the present invention, the impulse voltage testing device of the present invention includes a power input interface, a protection module disposed at the output end of the power input interface, and a control module, a first voltage output module and a second voltage output module disposed at the output end of the protection module. The control module controls the output voltage of the first voltage output module and the second voltage output module. The first voltage output module is used to provide a normal operating voltage, and the second voltage output module is used to provide an impulse voltage. The device also includes a power output interface that is connected to the first voltage output module and the second voltage output module respectively.

[0020] This example also includes a power switch disposed between the power input interface and the protection module. The power switch is a double-pole switch control module. Since the voltage output module in this example has two channels, the power switch in this example includes a first switch unit for controlling the switch of the first voltage output module and a second switch unit for controlling the switches of the second voltage output module and the control module, respectively.

[0021] As a second embodiment of the present invention, the hardware layout of this example is the same as that of the first embodiment, except that the sudden voltage of the power output interface is provided by the second voltage output module and the first voltage output module.

[0022] like Figure 2 As shown in the first and second embodiments of this example, the first voltage output module includes an isolation transformer T101 and an AC contactor JD-102 disposed at the output terminal of the isolation transformer T101. The induction coil of the AC contactor JD-102 is connected to the control module and outputs a working voltage of 220V.

[0023] The second voltage output module in this example includes a step-up transformer T102 and an AC contactor JD-101 installed at the output terminal of the step-up transformer T102. The induction coil of the AC contactor JD-101 is connected to the control module. The step-up transformer T102 boosts the 220V working voltage and outputs a 260V working voltage.

[0024] The switch module of the example is a double-blade switch K101 with two switch units, and the protection module includes a fuse F101, and an electrostatic tube, a voltage stabilizing tube and other overvoltage and overcurrent protection modules can also be arranged, so as to ensure the stability of power supply of the device.

[0025] The control module of the example is a digital display time relay DH101 with digital display, and the example further includes a voltmeter V101 for measuring the output voltage of the power supply output interface. The sudden change voltage of the example is provided by two output voltages, and the display range of the voltmeter V101 is between 0-450V, which can well cover the sudden change voltage of 380V. In addition, the second voltage output module of the example can also be boosted to the sudden change voltage to provide the sudden change voltage for testing.

[0026] Through the digital display time relay DH101, the working state and working time of each power supply can be viewed in real time, and through the voltmeter V101, the normal working voltage and sudden change voltage of the power supply output port can be viewed intuitively.

[0027] The working principle of the application is as follows:

[0028] When the 220VAC 50Hz power supply enters through the power supply input interface, it is controlled by the double-blade switch K101, enters the fuse F101, and is divided into the following three paths:

[0029] A, input to the isolation transformer T101, the isolation transformer T101 outputs 220VAC 50Hz to the AC contactor JD102;

[0030] B, input to the digital display time relay DH101, the digital display time relay DH101 has alternating control voltage output through the set time of the 5th pin and the 6th pin of the relay, accurately controls the alternating conduction of the AC contactors JD101 and JD102, and thus realizes the sudden change of the output voltage.

[0031] C, input to the step-up transformer T102, the step-up transformer T102 outputs 380VAC 50Hz to the AC contactor JD101.

[0032] The specific implementation method of the example digital display time relay DH101 for accurately controlling the alternating conduction of the AC contactors JD101 and JD102 to realize the sudden change of the output voltage is as follows:

[0033] First, set the T1 and T2 periods of the digital display time relay DH101, the time and the working mode.

[0034] After the digital display time relay DH101 is powered on, the T1 delay begins, and the digital display time relay DH101 is in a non-operating state (released). When the T1 time is up, the digital display time relay DH101 engages, and the left display blanks, then the T2 delay begins. When the T2 delay is up, the relay releases again, and the right display blanks. This completes the single-execution operation. If it is a cyclical operation, T1 continues to delay, and the above process continues to change the delay state. The left and right displays respectively indicate the working status and working time of the two voltage output modules.

[0035] During operation, if the power is cut off for more than 1 second or a reset signal is input, the time will return to the T1=0 state and start counting again, and the digital display time relay DH101 will be in the released state and start working again.

[0036] The impulse voltage testing device in this example is purely hardware-controlled, safe and reliable. It can output specific burst voltages for different working voltages, thus enabling effective impulse voltage testing of the equipment and avoiding equipment damage caused by unstable working voltage. This improves the reliability and adaptability of the equipment. The developed and designed product has stronger adaptability, reliability and stability, which also plays a vital role in improving product quality and company reputation.

[0037] The specific embodiments described above are preferred embodiments of the present invention and are not intended to limit the specific scope of the present invention. The scope of the present invention includes, but is not limited to, these specific embodiments. All equivalent changes made in accordance with the present invention are within the protection scope of the present invention.

Claims

1. An impulse voltage testing device, characterized in that: The device includes a power input interface, a protection module disposed at the output end of the power input interface, and a control module, a first voltage output module, and a second voltage output module disposed at the output end of the protection module. The control module controls the output voltages of the first and second voltage output modules. The first voltage output module provides a normal operating voltage, and the second voltage output module provides an impulse voltage. The device also includes a power output interface connected to both the first and second voltage output modules. The first voltage output module includes an AC contactor JD-102, the induction coil of which is connected to the control module. The second voltage output module includes an AC contactor JD-101, the induction coil of which is connected to the control module. The control module is a digital display time relay DH101 with a digital display. The digital display time relay DH101 precisely controls the alternating conduction time of AC contactors JD101 and JD102, thereby achieving controllable timing of normal operating voltage and impulse voltage surges. The specific method for implementing output voltage surges is as follows: First, set the T1 and T2 time periods, time, and working mode of the digital display time relay DH101; After the digital display time relay DH101 is powered on, delay T1 begins, and the relay remains inactive. When time T1 expires, the relay DH101 engages, and the left display blanks, starting delay T2. When delay T2 expires, the relay releases, and the right display blanks again. This completes the single-execution mode. For a cyclical mode, T1 continues to delay, and the above process repeats, changing the delay state. The left and right displays respectively indicate the operating status and time of the two voltage output modules. During operation, if the power is cut off for more than 1 second or a reset signal is input, the time will return to the T1=0 state and start counting again, and the digital display time relay DH101 will be released and start working again.

2. An impulse voltage testing device, characterized in that: The device includes a power input interface, a protection module disposed at the output end of the power input interface, and a control module, a first voltage output module, and a second voltage output module disposed at the output end of the protection module. The control module controls the output voltages of the first and second voltage output modules. The first voltage output module provides a normal operating voltage, and the second and first voltage output modules together provide an impulse voltage. The device also includes a power output interface connected to both the first and second voltage output modules. The first voltage output module includes an AC contactor JD-102, the induction coil of which is connected to the control module. The second voltage output module includes an AC contactor JD-101, the induction coil of which is connected to the control module. The control module is a digital display time relay DH101 with a digital display. The digital display time relay DH101 precisely controls the alternating conduction time of AC contactors JD101 and JD102, thereby achieving controllable timing of normal operating voltage and impulse voltage surges. The specific method for implementing output voltage surges is as follows: First, set the T1 and T2 time periods, time, and working mode of the digital display time relay DH101; After the digital display time relay DH101 is powered on, delay T1 begins, and the relay remains inactive. When time T1 expires, the relay DH101 engages, and the left display blanks, starting delay T2. When delay T2 expires, the relay releases, and the right display blanks again. This completes the single-execution mode. For a cyclical mode, T1 continues to delay, and the above process repeats, changing the delay state. The left and right displays respectively indicate the operating status and time of the two voltage output modules. During operation, if the power is cut off for more than 1 second or a reset signal is input, the time will return to the T1=0 state and start counting again, and the digital display time relay DH101 will be released and start working again.

3. The impulse voltage testing device according to claim 1 or 2, characterized in that: It also includes a power switch disposed between the power input interface and the protection module. The power switch is a double-pole switch control module, which includes a first switch unit for controlling the switch of the first voltage output module and a second switch unit for controlling the switches of the second voltage output module and the control module, respectively.

4. The impulse voltage testing device according to claim 3, characterized in that: The first voltage output module also includes an isolation transformer T101, and the AC contactor JD-102 is located at the output terminal of the isolation transformer T101.

5. The impulse voltage testing device according to claim 3, characterized in that: The second voltage output module also includes a step-up transformer T102, and the AC contactor JD-101 is located at the output terminal of the step-up transformer T102.

6. The impulse voltage testing device according to claim 1 or 2, characterized in that: It also includes a voltmeter V101 for measuring the output voltage of the power output interface.

7. The impulse voltage testing device according to claim 1 or 2, characterized in that: The protection module includes a fuse F101.

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