A testing device for medium voltage circuit breakers

Abstract

The utility model relates to the testing technical field of medium voltage circuit breaker, concretely to a testing device for medium voltage circuit breaker, include: test box body, lid, touch panel computer and switch, the upper end face one side of test box body is hinged with lid, and the inside surface of lid is provided with touch panel computer, and the below of touch panel computer is provided with switch, and the side of switch is provided with computer USB mouth, and the side of computer USB mouth is provided with debugging USB mouth, test box body is provided with test component and connecting component, and the intelligent medium voltage switch testing device is collected touch computer, control I / O module, loop resistance measuring module, switch characteristic measuring module, resistance measuring module, insulation resistance testing module etc.

Description

Technical Field

[0001] This utility model relates to the field of testing technology for medium-voltage circuit breakers, specifically to a testing device for medium-voltage circuit breakers. Background Technology

[0002] Chinese patent document CN220139433U discloses a power conversion and detection system for medium-voltage contactors, which proposes a control chip connected to the medium-voltage contactor. This invention adds a voltage acquisition circuit to monitor the output voltage of the rectifier circuit in real time to determine whether the power input voltage meets the voltage requirements for normal operation of the medium-voltage contactor, i.e., whether it is within the safe operating voltage range, thereby confirming the enable of the control chip. In addition, a filtering circuit is added to meet the relevant standards for conducted emission and electromagnetic radiation of electronic electromagnetic contactors, thereby reducing the conducted emission value and electromagnetic radiation of the product.

[0003] Medium-voltage switchgear refers to switchgear with voltage levels ranging from 3.3kV to 35kV. Its core components, medium-voltage circuit breakers and contactors, require annual inspection and maintenance. Therefore, testing medium-voltage circuit breakers and contactors is a crucial test item. The tests include: main circuit DC resistance testing, mechanical switch characteristic testing, electrical characteristic testing, auxiliary contact inspection, and insulation resistance testing. Existing testing instruments are all used independently, the operation process is cumbersome, requiring constant changes of test leads, external power supply for control, and manual completion of test records. Utility Model Content

[0004] The purpose of this invention is to provide a testing device for medium-voltage circuit breakers to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a testing device for medium-voltage circuit breakers, comprising: a test box, a box cover, a touch tablet computer, and a power switch; the box cover is hinged to one side of the upper end face of the test box, a touch tablet computer is provided on the inner side of the box cover, a power switch is provided below the touch tablet computer, a computer USB port is provided on one side of the power switch, and a debugging USB port is provided on one side of the computer USB port.

[0006] The test chamber is equipped with test components and connection components.

[0007] Preferably, the connecting assembly includes a connecting groove, a connecting plate, and a connecting rod; the connecting groove is fixedly disposed on the rear end face of the test chamber, and a connecting plate is hinged to one side of the connecting groove, and connecting rods are fixedly disposed at equal intervals on the connecting plate, and the outer side wall of the connecting rod is provided with external threads.

[0008] Preferably, fixed rods are fixedly provided at equal intervals on both sides of the rear end face of the test box, and movable plates are movably provided on the fixed rods. The movable plates are provided with connecting holes that are adapted to connect with the connecting rods, and the connecting rods are fixedly connected to the movable plates by the provided fixed bolts.

[0009] Preferably, the test component includes a protective grounding terminal, a secondary control interface, and a primary test interface; the protective grounding terminal is disposed in the connection slot, and a secondary control interface is disposed on one side of the protective grounding terminal, and a primary test interface is disposed below the protective grounding terminal, and three sets of primary test interfaces are provided.

[0010] Preferably, an external power supply is provided on one side of the secondary control interface, and a power output is provided below the external power supply, and a 24V power supply is provided on one side of the power output.

[0011] Preferably, an RS485 interface is provided below the 24V power supply, and a power socket is provided below the RS485 interface.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This utility model proposes a testing device for medium-voltage circuit breakers. The intelligent medium-voltage switch testing device integrates a touch screen computer, a control I / O module, a loop resistance measurement module, a switch characteristic measurement module, a resistance measurement module, and an insulation resistance testing module. It solves the problems of needing to wire and test each switch or circuit breaker individually and using multiple devices in combination during on-site testing, thus improving on-site testing efficiency and standardizing the maintenance work of switches or circuit breakers in the field. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the left side structure of the test chamber of this utility model;

[0015] Figure 2 This is a schematic diagram of the right side structure of the test chamber of this utility model;

[0016] Figure 3 This is a schematic diagram of the connecting groove structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the main structure of the rear end face of the test box of this utility model.

[0018] In the diagram: 1. Test chamber; 2. Cover; 3. Touch tablet computer; 4. Power switch; 5. Computer USB port; 6. Debug USB port; 7. Connection slot; 8. Connection plate; 9. Connection rod; 10. Fixing rod; 11. Movable plate; 12. Fixing bolt; 13. Protective grounding terminal; 14. Secondary control interface; 15. Primary test interface; 16. External power supply; 17. Power output; 18. 24V power supply; 19. RS485 interface; 20. Power socket. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] Please see Figures 1 to 4 This utility model provides three technical solutions:

[0021] Example 1: A test device for medium voltage circuit breakers includes: a test box 1, a box cover 2, a touch tablet computer 3, and a power switch 4; the box cover 2 is hinged to one side of the upper end face of the test box 1, the touch tablet computer 3 is provided on the inner side of the box cover 2, the power switch 4 is provided below the touch tablet computer 3, a computer USB port 5 is provided on one side of the power switch 4, and a debugging USB port 6 is provided on one side of the computer USB port 5.

[0022] The test chamber 1 is equipped with test components and connection components.

[0023] Example 2: Based on Example 1, the connecting assembly includes a connecting groove 7, a connecting plate 8, and a connecting rod 9; the connecting groove 7 is fixedly disposed on the rear end face of the test chamber 1, and the connecting plate 8 is hinged to one side of the connecting groove 7, and the connecting rod 9 is fixedly disposed at equal intervals on the connecting plate 8, and the outer side wall of the connecting rod 9 is provided with external threads.

[0024] Fixed rods 10 are fixedly installed at equal intervals on both sides of the rear end face of the test chamber 1, and movable plates 11 are movably installed on the fixed rods 10. The movable plates 11 are provided with connecting holes that are adapted to connect with the connecting rods 9, and the connecting rods 9 are fixedly connected to the movable plates 11 by the fixed bolts 12.

[0025] Example 3: Based on Example 2, the test component includes a protective grounding terminal 13, a secondary control interface 14, and a primary test interface 15; the protective grounding terminal 13 is set in the connection groove 7, and a secondary control interface 14 is set on one side of the protective grounding terminal 13, and a primary test interface 15 is set below the protective grounding terminal 13, and three sets of primary test interfaces 15 are provided.

[0026] An external power supply 16 is provided on one side of the secondary control interface 14, and a power output 17 is provided below the external power supply 16, and a 24V power supply 18 is provided on one side of the power output 17.

[0027] An RS485 interface 19 is located below the 24V power supply 18, and a power socket 20 is located below the RS485 interface 19.

[0028] The protective grounding terminal 13 is connected to the earth, serving as both a protective ground and a functional ground; the secondary control interface 14 is connected to the secondary connector of the switch under test via a secondary adapter cable for opening and closing control and auxiliary contact testing, and also serves as a secondary insulation test interface; the three phases of the primary test interface 15 are connected to the upper and lower ports of the primary side of the test switch respectively; the external power supply 16 is a backup external control power supply; the power output 17 is used to output control power, 0-250VDC; the 24V power supply 18 is used to output 24VDC power; the RS485 interface 19 is used for RS485 communication; and the power socket 20 is used for input power of 220V±10% 50Hz.

[0029] When using the platform, log in using the touch tablet 3. On the homepage status bar of the medium-voltage switchgear testing platform, click "User Management" to open the interface where you can register and manage user information. On the homepage status bar, click "Device Management." Click the "Add Device" button or the "Edit" button in the table to add or edit devices. Click the "Manage" button to edit or add equipment standards for determining pass / fail results. Click "Print" in the table, then click the "Print" button again to print QR code labels, which can be affixed to the devices and quickly selected using a QR code scanner. If the test computer has multiple serial port devices installed, the correct serial port must be selected for testing. Select the required serial port from the "Serial Port Selection" dropdown menu on the homepage status bar. The software defaults to opening the first serial port. To change the serial port, close it first, select the correct port, and then click "Open Serial Port." Click "One-Click Start," and the system will automatically perform tests on five items: "Main Circuit Resistance," "Mechanical Characteristics," "Electrical Characteristics," "Auxiliary Contacts," and "Insulation Resistance," saving the results and automatically generating reports.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A testing device for medium-voltage circuit breakers, comprising: Test box (1), box cover (2), touch tablet computer (3) and power switch (4); the box cover (2) is hinged to one side of the upper end of the test box (1), the touch tablet computer (3) is provided on the inner side of the box cover (2), the power switch (4) is provided below the touch tablet computer (3), the computer USB port (5) is provided on one side of the power switch (4), and the debugging USB port (6) is provided on one side of the computer USB port (5). The feature is that the test chamber (1) is provided with a test component and a connection component.

2. The testing device for medium-voltage circuit breakers according to claim 1, characterized in that: The connecting assembly includes a connecting groove (7), a connecting plate (8), and a connecting rod (9); the connecting groove (7) is fixedly disposed on the rear end face of the test chamber (1), and a connecting plate (8) is hinged to one side of the connecting groove (7), and a connecting rod (9) is fixedly disposed at equal intervals on the connecting plate (8), and the outer side wall of the connecting rod (9) is provided with an external thread.

3. The testing device for medium-voltage circuit breakers according to claim 2, characterized in that: The test box (1) has fixed rods (10) fixedly arranged at equal intervals on both sides of the rear end face, and a movable plate (11) is movably arranged on the fixed rod (10), and a connecting hole adapted to connect with the connecting rod (9) is provided on the movable plate (11), and the connecting rod (9) is fixedly connected to the movable plate (11) by a fixed bolt (12).

4. The testing device for medium-voltage circuit breakers according to claim 1, characterized in that: The test component includes a protective grounding terminal (13), a secondary control interface (14), and a primary test interface (15). The protective grounding terminal (13) is located in the connection slot (7), and a secondary control interface (14) is located on one side of the protective grounding terminal (13). A primary test interface (15) is located below the protective grounding terminal (13), and three sets of primary test interfaces (15) are provided.

5. A testing device for medium-voltage circuit breakers according to claim 4, characterized in that: An external power supply (16) is provided on one side of the secondary control interface (14), and a power output (17) is provided below the external power supply (16), and a 24V power supply (18) is provided on one side of the power output (17).

6. A testing device for medium-voltage circuit breakers according to claim 5, characterized in that: An RS485 interface (19) is provided below the 24V power supply (18), and a power socket (20) is provided below the RS485 interface (19).

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