Device for testing short-circuit bearing capacity of voltage transformer

Abstract

The utility model discloses a voltage transformer short circuit bearing capacity test device comprising a box body and a box cover which are hinged through a hinge, a lock catch assembly is arranged between the box body and the box cover on one side opposite to the hinge, a test device body is arranged in the box body, and universal wheels are arranged at the bottom of the box body. A pushing handle convenient for pushing the box body is arranged at the side end of the box body; the test device body is arranged in the box body through a partition plate, and two storage drawers are arranged at the side end of the box body below the partition plate; a rubber plate is arranged on the partition plate through a damping spring, the test device body is arranged on the rubber plate, and a rubber layer is arranged between the peripheral side of the test device body and the inner wall of the box body. According to the utility model, the test device body is moved to the side of the voltage transformer to be tested through the moving box body for testing, and the voltage transformer does not need to be manually carried, so that the labor intensity of workers is reduced, the test time is saved, and the test efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power measurement, and more specifically to a short-circuit bearing capacity testing device for a voltage transformer. Background Art

[0002] The voltage transformer short-circuit test is a test to assess the withstand capacity of the tested voltage transformer under short-circuit fault conditions during power system operation. That is, under rated voltage, it should be able to withstand the mechanical and thermal effects of an external short circuit between the secondary voltage terminals for 60 seconds without damage. During the test, the type of short-circuit current and the time required for the secondary output voltage to recover to the accurate limit after the short circuit is eliminated should be recorded.

[0003] At present, a test device is used to carry out a short-circuit test on a voltage transformer. During the test, since the test device is relatively large and cannot be carried, the voltage transformer can only be carried to the test device and the test device and the voltage transformer are connected by a test line for testing. After the test is completed, the voltage transformer is moved away. Carrying the voltage transformer back and forth for testing not only consumes a lot of manpower for carrying, increases the labor intensity of the staff, but also reduces the efficiency of the test. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a voltage transformer short-circuit withstand capacity test device, which can be moved to the voltage transformer for testing, eliminating the need for manual handling of the voltage transformer, thereby improving test efficiency.

[0005] In order to solve the above technical problems, the technical solutions adopted by the present utility model are as follows.

[0006] A voltage transformer short-circuit withstand capacity test device comprises a box body and a box cover hinged by hinges, a locking assembly is arranged between the box body and the box cover on the side opposite to the hinge, a test device body for performing a short-circuit withstand capacity test on the voltage transformer is arranged in the box body, a universal wheel is arranged at the bottom of the box body, and a push handle is arranged at the side end of the box body for facilitating pushing the box body; the test device body is arranged in the box body through a partition, and two storage drawers for storing test lines are arranged at the side end of the box body located below the partition; a rubber plate is arranged on the partition through a shock-absorbing spring, the test device body is arranged on the rubber plate, and a rubber layer for protecting the test device body during movement is arranged between the peripheral side of the test device body and the inner wall of the box body.

[0007] To further optimize the technical solution, a voltage indicator, a current indicator, a timing setting button, a power button, an adjustment knob, a control button, a display screen, wiring terminals and indicator lights are provided on the main body of the test device; a control mechanism is provided in the main body of the test device; a power access port is provided at the side end of the box; the power button is connected to a power line between the power access port and the power input terminal of the control mechanism; the output ends of the timing setting button, the adjustment knob and the control button are respectively connected to the input end of the control mechanism; the output end of the control mechanism is connected to the input ends of the voltage indicator, the current indicator, the display screen and the indicator light; and the control mechanism is electrically connected to the wiring terminals.

[0008] To further optimize the technical solution, the push handle is provided with an anti-skid layer.

[0009] To further optimize the technical solution, the storage drawer is provided with a pull ring for facilitating pulling out the drawer.

[0010] To further optimize the technical solution, heat dissipation holes for dissipating heat from the test device body are respectively opened on the front and rear sides of the box.

[0011] Due to the adoption of the above technical scheme, the technical progress achieved by the present invention is as follows.

[0012] The voltage transformer short-circuit withstand capacity test device provided by the utility model moves the test device body to the side of the voltage transformer to be tested by moving the box body, and there is no need to manually carry the voltage transformer, which reduces the labor intensity of manual labor, saves the test time, and improves the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the box cover of the utility model after it is opened;

[0015] Figure 3 This is a top view of the utility model.

[0016] Among them: 1. Box body, 2. Box cover, 3. Hinge, 4. Lock assembly, 5. Universal wheel, 6. Push handle, 7. Storage drawer, 8. Pull ring, 9. Partition, 10. Test device body, 11. Shock-absorbing spring, 12. Rubber plate, 13. Rubber layer, 14. Anti-slip layer, 15. Voltage indicator, 16. Current indicator, 17. Timing setting button, 18. Power button, 19. Adjustment knob, 20. Control button, 21. Display, 22. Terminal block, 23. Indicator light. DETAILED DESCRIPTION

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] One, combined Figures 1 to 3 As shown, it includes a box body 1 and a box cover 2 hingedly connected by a hinge 3, and a lock assembly 4 is arranged between the box body and the box cover on the side opposite to the hinge 3 to fix the box body and the box cover.

[0019] A test device body 10 is arranged in the box 1, which is used to perform a short-circuit withstand capacity test on the voltage transformer. A universal wheel 5 is arranged at the bottom of the box 1, and a push handle 6 is arranged at the side end of the box 1. The push handle 6 is provided with an anti-slip layer 14 to facilitate the staff to push the box to the voltage transformer side for testing.

[0020] A partition 9 is horizontally arranged in the box body 1, and the test device body 10 is arranged on the partition 9. Two storage drawers 7 are arranged at the side end of the box body 1 below the partition 9 for storing the test wires. The storage drawers 7 are provided with pull rings 8 for easy pulling out of the storage drawers.

[0021] A rubber plate 12 is arranged on the partition plate 9 via a shock-absorbing spring 11 , and the test device body 10 is arranged on the rubber plate 12 . During the movement, the shock-absorbing spring and the rubber plate are used to absorb shock to the test device body 10 .

[0022] A rubber layer 13 is provided between the peripheral side of the test device body 10 and the inner wall of the box 1 to protect the test device body. During the movement, the test device body is placed in the box and shakes, causing damage to the test device.

[0023] The test device body 10 is provided with a voltage indicator 15, a current indicator 16, a timing setting button 17, a power button 18, an adjustment knob 19, a control button 20, a display screen 21, a wiring terminal 22 and an indicator light 23. The voltage indicator is used to indicate voltage, the current indicator is used to indicate current, the timing setting button is used to set the timing time, the power button is used to connect the power supply to the test device body to turn on the power supply, the adjustment knob is used to adjust the current during the test, the control button is used to control the test device to test the voltage transformer, the display screen is used to display the test results, the wiring terminal is used to connect the voltage transformer, and the indicator light is used to indicate the test status; a control mechanism is provided in the test device body 10 for testing the voltage transformer, a power access port is provided at the side end of the box, the power button is connected to the power line between the power access port and the power input end of the control mechanism, the output ends of the timing setting button, the adjustment knob and the control button are respectively connected to the input end of the control mechanism, the output end of the control mechanism is connected to the input end of the voltage indicator, the current indicator, the display screen and the indicator light, and the control mechanism is electrically connected to the wiring terminal.

[0024] In order to improve the heat dissipation effect of the test device body, heat dissipation holes are respectively opened on the front and rear sides of the box body 1 to avoid inaccurate test results caused by overheating of the test device body during operation, thereby improving the test accuracy and service life of the test device body.

[0025] When the utility model tests a voltage transformer, the box is pushed to the side of the voltage transformer to be tested by a push handle, the test line is taken out from the storage drawer at the lower end, connected to the wiring terminal on the test device body and the voltage transformer, the power is turned on, and after pressing the power button, the timing time is set by a timing setting button on the test device body, the test parameters are adjusted by an adjustment knob, and the voltage transformer is started to be tested by a control button. During the test, the voltage indicator and the current indicator indicate the voltage and the current respectively. After the test is completed, the test result is displayed on the display screen. After the test is completed, the test is stopped by the control button, the connected voltage transformer is removed and the box is pushed to the next voltage transformer side, the voltage transformer is connected for testing, and the above steps are repeated to perform the test.

Claims

1. Voltage transformer short-circuit withstand capacity test device, characterized by: The invention comprises a box body (1) and a box cover (2) which are hingedly connected by a hinge (3); a locking assembly (4) is arranged between the box body and the box cover on the side opposite to the hinge (3); a test device body (10) for performing a short-circuit withstand capacity test on a voltage transformer is arranged in the box body (1); a universal wheel (5) is arranged at the bottom of the box body (1); and a handle (6) for facilitating pushing of the box body is arranged at the side end of the box body (1); the test device body (10) is arranged in the box body (1) through a partition (9); and two storage drawers (7) for storing test wires are arranged at the side end of the box body (1) below the partition (9); a rubber plate (12) is arranged on the partition (9) through a shock-absorbing spring (11); the test device body (10) is arranged on the rubber plate (12); and a rubber layer (13) for protecting the test device body during movement is arranged between the peripheral side of the test device body (10) and the inner wall of the box body (1).

2. The voltage transformer short-circuit withstand capacity test device according to claim 1, characterized in that: The test device body (10) is provided with a voltage indicator (15), a current indicator (16), a timing setting button (17), a power button (18), an adjustment knob (19), a control button (20), a display screen (21), a wiring terminal (22) and an indicator light (23). A control mechanism is provided in the test device body. A power access port is provided at the side end of the box body. The power button is connected to a power line between the power access port and a power input end of the control mechanism. The output ends of the timing setting button, the adjustment knob and the control button are respectively connected to the input end of the control mechanism. The output end of the control mechanism is connected to the input ends of the voltage indicator, the current indicator, the display screen and the indicator light. The control mechanism is electrically connected to the wiring terminal.

3. The voltage transformer short-circuit withstand capacity test device according to claim 1, characterized in that: The push handle (6) is provided with an anti-skid layer (14).

4. The voltage transformer short-circuit withstand capacity test device according to claim 1, characterized in that: The storage drawer (7) is provided with a pull ring (8) for facilitating pulling out the drawer.

5. The voltage transformer short-circuit withstand capacity test device according to claim 1, characterized in that: The front and rear sides of the box body (1) are respectively provided with heat dissipation holes for dissipating heat from the test device body (10).

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