Test device and test system for series-type fault arcs

Abstract

The utility model discloses a purpose at providing a kind of test device and test system of series type fault arc, can simulate the scene of unstable series type fault arc produced in vibrating environment when wiring terminal loosens.This utility model's test device of series type fault arc, for simulating the scene of unstable series type fault arc produced in vibrating environment when wiring terminal loosens, wherein, including: vibration table;Insulating plate installed on vibration table;Bolt fixed on insulating plate;Current inflow conductor that crimp has wiring terminal, wiring terminal is set in the outer periphery of bolt in the way of being able to move up and down;Two nuts, two nuts are tightened on bolt in the way that respectively located the upper side and lower side of wiring terminal;And current outflow conductor connected with bolt, using the vibration of vibration table, make bad electrical contact between wiring terminal and bolt, to trigger series type fault arc.

Description

Technical Field

[0001] This utility model relates to a test device and test system for a series-type fault arc. Background Technology

[0002] Errors during the installation and maintenance of EWIS (Electrical Wiring Interconnection Systems) components, or abnormal loads on the wiring harness caused by aircraft system components, can lead to loose EWIS electrical connections. These can include loose terminals, poor or loose contacts, and bent or loose connector pins. During flight, these loose EWIS components may develop poor contact under vibration conditions, potentially triggering a series arcing fault.

[0003] The device for detecting tandem arc faults is typically a carbon rod tester based on the UL 1699 standard. This method involves physical contact between a carbon rod and a copper rod. As one rod is slowly withdrawn, current continues to flow through it, generating a highly clean and reproducible tandem arc event. However, this arc is too "idealized" and cannot accurately reflect the actual operating conditions on an aircraft.

[0004] In other words, the existing technology does not cover the situation where loose EWIS electrical connections in the aircraft cause series arcs, and cannot simulate the situation where loose EWIS (such as wiring terminals) due to mechanical vibration during aircraft operation has poor electrical contact, thus generating fault arcs.

[0005] In summary, it is necessary to design a test device that truly reflects the actual operating conditions on an aircraft to investigate the hazards of series arc faults and verify the effectiveness of the aircraft's EWIS isolation and protection design to ensure aircraft safety. Utility Model Content

[0006] In view of the above problems, the purpose of this utility model is to provide a test device and test system for series fault arc, which can simulate the scenario of unstable series fault arc generated under vibration environment when the terminal is loose.

[0007] To achieve the aforementioned objective of this utility model, a test device for a series-type fault arc is provided to simulate the scenario where an unstable series-type fault arc is generated under vibration when a terminal is loose. The device includes: a vibration table; an insulating plate mounted on the vibration table; a bolt fixed to the insulating plate; a current-flowing conductor crimped with the terminal, the terminal being positioned on the outer periphery of the bolt in a vertically movable manner; two nuts tightened onto the bolt, located above and below the terminal respectively; and a current-outflowing conductor connected to the bolt. The vibration of the vibration table causes poor electrical contact between the terminal and the bolt, thereby triggering the series-type fault arc.

[0008] According to the test device for series fault arc of this utility model, by adjusting the vibration frequency and amplitude of the vibration table, a poor electrical connection is generated between the loose terminal and the bolt, thereby triggering a fault arc. Thus, it is possible to simulate the scenario of an unstable series fault arc generated under vibration when the terminal is loose.

[0009] Preferably, the insulating plate is mounted on the vibration table via a spring.

[0010] According to the test device for series-type fault arc of this utility model, the vibration of the insulating plate can be well realized by the vibration table via the spring.

[0011] Preferably, the current-outflow wire is connected to the bolt via a clamp, located below the nut on the lower side of the terminal block.

[0012] The test device for series-type fault arc according to this utility model can easily and effectively allow current to flow out.

[0013] Preferably, the test device for series-type fault arc of this utility model further includes: a translation scale set on the insulating plate; and a belt-driven translation device set on the insulating plate, wherein the target part as the test object is translated according to the translation scale, thereby adjusting the distance between the target part and the bolt.

[0014] According to the test device for series-type fault arc of this utility model, different isolation distances between the arc initiation point and the target part can be conveniently set to verify the damage of the arc to the target part at different isolation distances.

[0015] Preferably, the target component is supported by a support member and is at approximately the same height as the wiring terminal.

[0016] According to the test device for series-type fault arc of this utility model, the target part and the support part can be translated together by using a belt-driven translation device.

[0017] Preferably, the target component is any one of structural wall panels, pipes, and cables.

[0018] According to the test device for series-type fault arcs of this utility model, different types, sizes and materials of target parts can be flexibly set and replaced to assess arc damage.

[0019] Preferably, the terminal block is an EWIS component of the aircraft.

[0020] The test device for series-type fault arcs according to this invention can simulate the scenario where a loose terminal on an aircraft triggers a series-type fault arc under mechanical vibration. A vibration table can be used to set a vibration curve equivalent to the vibration environment of an aircraft flight, causing poor electrical contact between the terminal and bolt on the vibration table, thereby triggering a fault arc.

[0021] To achieve the above-mentioned objectives of this utility model, this utility model provides a test system for series-type fault arcs, comprising: a test operating table; the aforementioned test device for series-type fault arcs; and a load, wherein the current-inflow conductor of the test device for series-type fault arcs is connected to the test operating table, and the current-outflow conductor is connected to the load.

[0022] According to the test system for series fault arc of this utility model, by adjusting the vibration frequency and amplitude of the vibration table, a poor electrical connection is generated between the loose terminal and the bolt, thereby triggering a fault arc. Thus, it is possible to simulate the scenario of an unstable series fault arc generated under vibration when the terminal is loose.

[0023] Preferably, a power supply is provided at the bottom of the test platform, the power supply being able to simulate the voltage required for the aircraft's power output.

[0024] The test system for series-type fault arcs according to this invention can simulate the scenario where a loose terminal on an aircraft triggers a series-type fault arc under mechanical vibration. A vibration table can be used to set a vibration curve equivalent to the vibration environment of an aircraft flight, causing poor electrical contact between the terminal and bolt on the vibration table, thereby triggering a fault arc.

[0025] Preferably, the test operation table includes: a vibration table setting panel for setting various test parameters; a start button and a stop button for starting and stopping the test; and an I / O interface for saving and outputting test data.

[0026] According to the test system for series-type fault arcs of this utility model, the test can be controlled as a whole using the test operation table. Attached Figure Description

[0027] Figure 1 This is a schematic diagram showing the structure of the test device for a series-type fault arc according to an embodiment of the present invention.

[0028] Figure 2 This is a perspective view showing the structure of the test device for a series-type fault arc according to an embodiment of the present invention.

[0029] Figure 3 This is a perspective view showing the arc-initiating structure in the test device for a series-type fault arc according to an embodiment of the present invention.

[0030] Figure 4 This is a top view showing the gap between the terminals and bolts in the test device for series-type fault arcs according to an embodiment of this utility model.

[0031] Figure 5 The diagram shows the structure of the spring between the vibration table and the insulating plate in the test device for a series-type fault arc according to an embodiment of the present invention, wherein (a) is a left view and (b) is a front view.

[0032] Figure 6 This is a perspective view of the test device for a series-type fault arc according to an embodiment of the present invention, with the target component being a structural wall panel.

[0033] Figure 7 This is a perspective view showing the structure of the test device for a series-type fault arc according to an embodiment of the present invention when the target component is a pipeline.

[0034] Figure 8 This is a perspective view showing the structure of the test device for series-type fault arcs according to an embodiment of the present invention when the target component is a cable.

[0035] Figure 9 This is a perspective view of the structure of the test device for a series-type fault arc according to an embodiment of the present invention when the isolation distance between the target and the arc initiation point is 0.5 inches.

[0036] Figure 10 This is a perspective view showing the structure of the test device for a series-type fault arc according to an embodiment of the present invention when the isolation distance between the target and the arc initiation point is 6 inches.

[0037] Figure 11 This is a perspective view showing the translation scale in the test device for a series-type fault arc according to an embodiment of the present invention.

[0038] Figure 12This is a perspective view of the belt-driven translation mechanism in the test device for a series-type fault arc according to an embodiment of the present invention.

[0039] Figure 13 This is a connection diagram illustrating the test system for a series-type fault arc according to an embodiment of the present invention.

[0040] Figure 14 This is a schematic diagram illustrating an example of the electrical connection during testing using the test apparatus for a series-type fault arc according to an embodiment of the present invention.

[0041] (Symbol Explanation)

[0042] 1 Test apparatus for series-type fault arcs

[0043] 11. Vibration table

[0044] 12 Insulation Board

[0045] 13 Translation scale

[0046] 14 bolts

[0047] 15 Terminal blocks

[0048] 16 First Nut

[0049] 17 Second Nut

[0050] 18 clips

[0051] 19 Springs

[0052] 2 Target component

[0053] 2a Structural wall panel

[0054] 2b Piping

[0055] 2C cable

[0056] 3 servo motors

[0057] 4 belts

[0058] 5 Support components

[0059] 6. Test operation table

[0060] 61 Vibration table setting panel

[0061] 62 Start button

[0062] 63 Stop button

[0063] 64 I / O interfaces

[0064] 65 power supply

[0065] I1 Current flows into the wire

[0066] I2 current flows out of the wire

[0067] G gap

[0068] R load

[0069] P circuit protection device Detailed Implementation

[0070] Various embodiments of the present invention will now be described in detail, examples of which are shown in the accompanying drawings and described below. Although the present invention will be described in conjunction with exemplary embodiments, it should be understood that this specification is not intended to limit the present invention to those exemplary embodiments. Rather, the present invention is intended to cover not only these exemplary embodiments, but also various alternatives, modifications, equivalents, and other embodiments that may be included within the spirit and scope of the present invention as defined by the appended claims.

[0071] Below, in conjunction with Figures 1 to 14 The test apparatus 1 for series-type fault arc according to the present invention will be described.

[0072] Figure 1 This is a schematic diagram showing the structure of the test device 1 for series-type fault arc according to an embodiment of the present invention. Figure 2 This is a perspective view showing the structure of the test device 1 for series-type fault arc according to an embodiment of the present invention. Figure 3 This is a perspective view of the arc-starting structure in the test device 1 for a series-type fault arc according to an embodiment of the present invention. Figure 4 This is a top view showing the gap G between the terminal 15 and the bolt 14 in the test device 1 for a series-type fault arc according to an embodiment of the present invention. Figure 5 The diagram shows the structure of the spring 19 between the vibration table 11 and the insulating plate 12 in the test device 1 for a series-type fault arc according to an embodiment of the present invention, wherein (a) is a left view and (b) is a front view. Figure 6 This is a perspective view of the structure of the test device 1 for the series-type fault arc according to the embodiment of the present invention when the target component 2 is a structural wall panel 2a. Figure 7 This is a perspective view showing the structure of the test device 1 for a series-type fault arc according to an embodiment of the present invention when the target component 2 is a pipe 2b. Figure 8 This is a perspective view of the structure of the test device 1 for the series-type fault arc according to the embodiment of the present invention when the target component 2 is cable 2c. Figure 9 This is a perspective view of the structure of the test device 1 for a series-type fault arc according to an embodiment of the present invention when the isolation distance between the target 2 and the arc initiation point is 0.5 inches. Figure 10 This is a perspective view of the structure of the test device 1 for a series-type fault arc according to an embodiment of the present invention when the isolation distance between the target 2 and the arc initiation point is 6 inches. Figure 11 This is a perspective view of the translation scale 13 in the test device 1 for a series-type fault arc according to an embodiment of the present invention. Figure 12 This is a perspective view of the belt-driven translation mechanism in the test device 1 for a series-type fault arc according to an embodiment of the present invention. Figure 13 This is a connection diagram illustrating the test system for a series-type fault arc according to an embodiment of the present invention. Figure 14 This is a schematic diagram illustrating an example of the electrical connection when conducting a test using the test apparatus 1 for a series-type fault arc according to an embodiment of the present invention.

[0073] (The overall structure of the test device 1 for series-type fault arc according to the present invention)

[0074] The following mainly refers to Figures 1 to 5 The overall structure of the test device 1 for the series-type fault arc according to the present invention will be described.

[0075] like Figure 1 and Figure 2 As shown, the test device 1 for series fault arcing according to this embodiment of the present invention can simulate the scenario where an unstable series arc is generated under vibration when the terminal 15 on an aircraft becomes loose, and this arc may cause arc damage to surrounding system components. However, the terminal in this invention is not limited to the terminal on an aircraft, but can be a terminal from any field.

[0076] The basic principle of the experiment is to adjust the vibration frequency and amplitude of the vibration table 11 to create a poor electrical connection between the loose terminal 15 and the fixed bolt 14, and then pull out a plasma current arc column by separating the two electrodes after they come into contact, i.e., arc pulling.

[0077] like Figure 3 As shown, in the test apparatus 1 for series-type fault arcs according to this embodiment of the present invention, firstly, an insulating plate 12 with a bolt 14 is fixed to a vibration table 11, and a current-flowing conductor I1 with a crimped terminal 15 is connected to the bolt 14, allowing current to flow in. Secondly, to prevent the terminal 15 from separating from the bolt 14 during vibration, two nuts, namely a first nut 16 and a second nut 17, are placed above and below the terminal 15 respectively, and tightened. Finally, a clamp 18 with a current-flowing conductor I2 connected to the two nuts, namely the first nut 16 and the second nut 17, is used to clamp the bolt 14 below, allowing current to flow out.

[0078] like Figure 4As shown, a certain gap G should be left between the terminal 15 and the bolt 14, and it should be ensured that it can move up and down flexibly, so that intermittent contact can be generated between the terminal 15 and the bolt 14 and the two nuts, namely the first nut 16 and the second nut 17, during vibration.

[0079] like Figure 5 As shown, multiple springs 19 are installed between the vibration table 11 and the insulating plate 12 to achieve the vibration function.

[0080] like Figures 6-8 As shown, the test device 1 for series-type fault arcing according to this embodiment of the invention can flexibly set and replace target components 2 (including structural panels 2a, pipes 2b, and cables 2c, etc.) of different types, sizes, and materials as test objects to assess their arc damage. This function stems from the need to conduct arc testing verification on various aircraft components when considering the potential damage from series-type fault arcing in aircraft. In addition, this can also verify the arc protection capability of physical isolation (such as baffles) used in EWIS design.

[0081] The types of target components 2 are as follows: pipes 2b generally include flammable liquid pipes or flammable gas pipes; structural panels 2a generally include metal panels and composite material panels; cables 2c are various EWIS cables on the aircraft, including single-core wires and shielded wires. The size and material of target components 2 can be selected according to the test requirements, or equivalent structural components can be selected (e.g., the minimum thickness of structural components installed on the aircraft).

[0082] The series-type fault arc test device 1 of this utility model can conveniently set the isolation distance between the arc initiation point (the axial position of bolt 14) and the target component 2. There are situations on aircraft where the isolation distance in confined spaces does not meet requirements and needs to be verified through testing. By setting different isolation distances between the arc initiation point and the target component 2, the damage of the arc to aircraft components at different isolation distances is verified, supporting the effectiveness of the EWIS isolation design in arc protection.

[0083] like Figure 12 and Figure 13 As shown, the distance between the starting point of the arc and the target part 2 is generally 0.5 inches to 6 inches.

[0084] The test device 1 for series-type fault arcs according to this utility model embodiment can conveniently adjust the isolation distance, which is achieved by a belt-driven translation device driven by a translation scale 13 and a servo motor 3.

[0085] like Figure 11As shown, the translation scale 13 is used to indicate the distance between the starting point of the arc and the target part 2, with an accuracy of 0.5 inches. However, the translation scale 13 can also be omitted, and a ruler can be used for measurement instead.

[0086] like Figure 12 As shown, the principle of the belt-driven translation device driven by the servo motor 3 is that the servo motor 3 drives the pulley, which in turn drives the belt 4 and the support 5 for placing the target components 2 such as pipes to move in translation.

[0087] (The overall structure of the test system for series-type fault arc according to the present invention)

[0088] The following mainly refers to Figure 13 The overall structure of the test system for series-type fault arc according to the present invention will be described.

[0089] like Figure 13 As shown, the test system for series-type fault arc includes: test operating table 6, test device 1 for series-type fault arc and load R.

[0090] The test bench 6 includes: a vibration table setting panel 61, a start button 62, a stop button 63, and an I / O interface 64. A power supply 65 is located at the bottom of the test bench 6, which can simulate the voltage required for aircraft power output.

[0091] The vibration table setting panel 61 allows setting test parameters: vibration duration (s), frequency (Hz), intensity (%), and acceleration slope (%). Simultaneously, the vibration table setting panel 61 can also record test results: current and voltage waveforms, test duration (s), frequency (Hz), amplitude (mm), current value (A), intensity (%), and acceleration (g).

[0092] The start button 62 and the stop button 63 are used to start and stop the test.

[0093] I / O interface 64 can save and output vibration arc test data via computer or other means.

[0094] (The effect of the test device 1 for series-type fault arc according to the present invention)

[0095] In a preferred embodiment, the test apparatus 1 for series-type fault arcs of this invention can simulate the scenario where a loose terminal 15 on an aircraft triggers a series-type fault arc under mechanical vibration. A vibration table 11 is used to set a vibration curve equivalent to an aircraft flight vibration environment (see RTCA / DO-160G Section 8), causing poor electrical contact between the terminal 15 and the bolt 14 on the vibration table 11, thereby triggering a fault arc.

[0096] In a preferred embodiment, the test device 1 for series-type fault arcs of this utility model simulates the potential impact of series-type fault arcs on various surrounding system components by setting and changing different target components 2 on one side at the same horizontal height of the arc initiation point. These components can be equivalent to aircraft structural components (such as structural panels 2a, pipes 2b, and cables 2c).

[0097] In a preferred embodiment, the test device 1 for series-type fault arcs of this utility model can not only assess the impact of the arc on surrounding components, but also verify the arc protection capability of the physical isolation (such as baffles) used in the EWIS design.

[0098] In the preferred embodiment, the test device 1 for series-type fault arcs of this utility model can conveniently set different isolation distances between the arc initiation point and the target component 2, verify the damage of the arc to the aircraft component at different isolation distances, and support the effectiveness of the EWIS isolation design in arc protection.

[0099] In the preferred embodiment, the advantages of "flexible setting and replacement of target component 2" and "convenient and adjustable isolation distance" together make the test device 1 for series fault arc of this utility model have good versatility and solve the problem of redundant configuration in actual test process.

[0100] (Test method of the test device 1 for series-type fault arc according to the present invention)

[0101] Before the test, the terminal block 15 needs to be prepared by crimping the current-carrying wire I1 to the terminal block 15. The shape and characteristic data of the terminal block 15 used for the test must be consistent with those of the terminal blocks used on the aircraft, such as size, conductor material, surface plating, insulating sleeve material, reference weight, and temperature.

[0102] The target component 2 used in the test should be selected according to the test configuration, and generally includes structural panel 2a, conduit 2b, and cable 2c. The materials and parameters of the target component 2 should be consistent with the aircraft configuration and comply with relevant specifications, or analysis should show that the test configuration is more severe. The materials of conduit 2b include aluminum alloy, stainless steel, and titanium alloy; the materials of structural panel 2a include metals and composite materials; the types of cable 2c include single-core wire, twisted wire, and shielded wire, etc.

[0103] The test equipment used in the test includes a power supply, a temperature measuring device attached to the back of the target part 2, a series-type fault arc test device 1, loads Rf and Rg, and circuit protection device P, etc.

[0104] like Figure 14 The image shows an example of the electrical connections of the test equipment.

[0105] The experimental steps are as follows:

[0106] a. Install target component 2 (equipped with a temperature measuring device) and connect the terminal 15, which is crimped with the current-carrying wire I1, to the bolt 14, ensuring that the terminal 15 can move up and down flexibly.

[0107] b. Slide the support member 5 of the target member 2 and set the isolation distance between the arc starting point and the target member 2 through the translation scale 13. Adjust the height of the target member 2 so that it is at the same height and parallel to the arc starting point. (The last sentence appears to be incomplete and possibly refers to a different action.) Figure 14 The electrical connection diagram shown connects the circuit.

[0108] c. After setting the frequency and vibration amplitude of the vibration table 11, start the vibration table 11.

[0109] d. After the expected vibration level is reached, set the power output parameters and start the power supply to energize the circuit. Then, visually check whether an arc discharge has formed. If the arc discharges normally, proceed directly to step e; if the arc discharge is not visible, turn off the vibration table 11, remove the power supply, reset the connection between the terminal 15 and the bolt 14 (ensuring that the terminal 15 can move freely), and restart the vibration table 11 and the power supply to check whether the fault arc can be triggered.

[0110] e. Stop the experiment if any of the following occurs:

[0111] 1) During the test, if the circuit protection device P trips and at least one fault arc has occurred beforehand, the test is considered successful. Immediately stop the vibration table 11 and turn off the power.

[0112] 2) If an arc fault occurs during the test, but the circuit protection device P does not trip, it means the test has failed. Immediately stop the vibration table 11 and turn off the power.

[0113] f. Record the damage condition of target part 2 (ablation area and depth, etc.) and the temperature change and maximum temperature of the inner wall of target part 2 during the test.

[0114] g. Repeat the experiment at least three times to ensure the confidence level of the test results.

[0115] In summary, the series-type fault arc test device 1 of this utility model utilizes a vibration table 11 to intermittently contact the terminal 15 with the bolt 14, thereby triggering a fault arc and evaluating the damage impact of arc failure. The simulated scenario is: loose terminals on an aircraft have poor electrical contact with termination devices, which can generate a fault arc due to vibration. Arc failure may damage surrounding systems and equipment. Therefore, the series-type fault arc test device 1 of this utility model can be used to conduct related EWIS series arc tests, verify the effectiveness of the EWIS arc isolation design protection, and ensure that arc failure does not affect aircraft flight safety.

[0116] (Technical features and effects of the test device 1 for series-type fault arc of this utility model)

[0117] This invention provides a test device 1 for a series fault arc, used to simulate the scenario where an unstable series fault arc is generated under vibration when a terminal 15 is loose. The device includes: a vibration table 11; an insulating plate 12 mounted on the vibration table 11; a bolt 14 fixed to the insulating plate 12; a current-flowing conductor I1 crimped with the terminal 15, the terminal 15 being positioned on the outer periphery of the bolt 14 in a way that allows it to move up and down; two nuts (a first nut 16 and a second nut 17), the two nuts being tightened onto the bolt 14 at their respective upper and lower sides of the terminal 15; and a current-outflowing conductor I2 connected to the bolt 14. The vibration of the vibration table 11 causes poor electrical contact between the terminal 15 and the bolt 14, thereby triggering a series fault arc.

[0118] According to the test device 1 for series fault arc of this utility model, by adjusting the vibration frequency and amplitude of the vibration table 11, a poor electrical connection is generated between the loose terminal 15 and the bolt 14, thereby triggering a fault arc. Thus, it is possible to simulate the scenario of an unstable series fault arc generated under vibration when the terminal 15 is loose.

[0119] Preferably, the insulating plate 12 is mounted on the vibration table 11 via a spring 19.

[0120] According to the test device 1 for series-type fault arc of the present invention, the vibration of the insulating plate 12 can be well realized by the vibration table 11 via the spring 19.

[0121] Preferably, below the nut (second nut 17) located on the lower side of the terminal 15, the current outflow wire I2 is connected to the bolt 14 via the clip 18.

[0122] According to the test device 1 for series-type fault arc of this utility model, current can be easily and effectively discharged.

[0123] Preferably, the test device 1 for series-type fault arc of this utility model further includes: a translation scale 13 set on the insulating plate 12; and a belt-driven translation device set on the insulating plate 12, which is used to translate the target part 2 according to the translation scale 13, thereby adjusting the distance between the target part 2 and the bolt 14.

[0124] According to the test device 1 for series-type fault arc of this utility model, different isolation distances between the arc initiation point and the target part 2 can be conveniently set to verify the damage of the arc to the target part 2 at different isolation distances.

[0125] Preferably, the target component 2 is supported by the support component 5 and is at approximately the same height as the terminal block 15.

[0126] According to the test device 1 for series-type fault arc of this utility model, the target part 2 and the support part 5 can be translated together by using a belt-driven translation device.

[0127] Preferably, the target component 2 is any one of the structural wall panel 2a, pipe 2b, and cable 2c.

[0128] According to the test device 1 for series-type fault arc of this utility model, different types, sizes and materials of target parts 2 can be flexibly set and replaced to evaluate arc damage.

[0129] Preferably, terminal 15 is an EWIS component of the aircraft.

[0130] According to the test device 1 for series fault arc of this utility model, the scenario of a loose terminal 15 on an aircraft triggering a series fault arc under mechanical vibration can be simulated. A vibration table 11 can be used to set a vibration curve equivalent to the vibration environment of an aircraft flight, so that poor electrical contact occurs between the terminal 15 and the bolt 14 on the vibration table 11, thereby triggering a fault arc.

[0131] In addition, the test system for series-type fault arc of this utility model includes: a test operating table 6; the aforementioned test device 1 for series-type fault arc; and a load R. The current inflow conductor I1 of the test device 1 for series-type fault arc is connected to the test operating table 6, and the current outflow conductor I2 is connected to the load R.

[0132] According to the test system for series fault arc of this utility model, by adjusting the vibration frequency and amplitude of the vibration table 11, a poor electrical connection is made between the loose terminal 15 and the bolt 14, thereby triggering a fault arc. Thus, it is possible to simulate the scenario of an unstable series fault arc generated under vibration when the terminal 15 is loose.

[0133] Preferably, a power supply 65 is provided at the lower part of the test operation table 6, and the power supply 65 can simulate the voltage required for the aircraft power output.

[0134] The test system for series-type fault arcs according to this invention can simulate the scenario where a loose terminal 15 on an aircraft triggers a series-type fault arc under mechanical vibration. A vibration table 11 can be used to set a vibration curve equivalent to an aircraft flight vibration environment, causing poor electrical contact between the terminal 15 and the bolt 14 on the vibration table 11, thereby triggering a fault arc.

[0135] Preferably, the test operation table 6 includes: a vibration table setting panel 61 for setting various test parameters; a start button 62 and a stop button 63 for starting and stopping the test; and an I / O interface 64 for saving and outputting test data.

[0136] According to the test system for series-type fault arc of this utility model, the test operation table 6 can be used to control the test as a whole.

[0137] Although the structure and working principle of this utility model have been described above with reference to preferred embodiments, those skilled in the art should recognize that the above examples are merely illustrative and should not be construed as limiting the utility model. Therefore, modifications and variations can be made to this utility model within the spirit and scope of the claims, and all such modifications and variations will fall within the scope claimed by the claims of this utility model.

Claims

1. A test apparatus for a series-type fault arc, used to simulate the scenario of an unstable series-type fault arc generated under vibration when the terminal is loose, characterized in that, include: Vibration table; An insulating plate installed on the vibration table; Bolts fixed to the insulating plate; Current flows into the conductor crimped with the terminal, which is positioned on the outer periphery of the bolt in a manner that allows it to move up and down. Two nuts, the two nuts being tightened onto the bolt such that they are respectively located above and below the terminal block; and The current flows out of the conductor connected to the bolt. The vibration of the vibration table causes poor electrical contact between the terminal block and the bolt, thereby triggering the series fault arc.

2. The test apparatus for series-type fault arcs as described in claim 1, characterized in that, The insulating plate is mounted on the vibration table via a spring.

3. The test apparatus for series-type fault arcs as described in claim 1, characterized in that, Below the nut, located on the lower side of the terminal block, the current-outgoing wire is connected to the bolt via a clamp.

4. The test apparatus for series-type fault arcs as described in claim 1, characterized in that, Also includes: Translation scale set on the insulating plate; as well as A belt-driven translation device is installed on the insulating plate. According to the translation scale, the target part, which is the test object, is translated using the belt-driven translation device, thereby adjusting the distance between the target part and the bolt.

5. The test apparatus for series-type fault arcs as described in claim 4, characterized in that, The target component is supported by a support member and is at approximately the same height as the wiring terminal.

6. The test apparatus for series-type fault arcs as described in claim 4, characterized in that, The target component can be any one of structural wall panels, pipes, and cables.

7. The test apparatus for series-type fault arcs as described in any one of claims 1 to 6, characterized in that, The terminal block is an EWIS component of the aircraft.

8. A test system for series-type fault arcs, characterized in that, include: Test operation table; Test apparatus for series-type fault arcs as described in any one of claims 1 to 7; as well as load, The current inflow conductor of the series-type fault arc test device is connected to the test operating table, and the current outflow conductor is connected to the load.

9. The test system for series-type fault arcs as described in claim 8, characterized in that, A power supply is located at the bottom of the test platform, which can simulate the voltage required for aircraft power output.

10. The test system for series-type fault arcs as described in claim 8, characterized in that, The test control panel includes: a vibration table setting panel for setting various test parameters; start and stop buttons for starting and stopping the test; and an I / O interface for saving and outputting test data.

Images