Current line mounting structure for testing current sensor and testing device

Abstract

The utility model belongs to the field of current sensor testing, and particularly relates to a current line mounting structure and testing device for testing a current sensor, which comprises a current source to-be-tested current sensor mounting tool, a current line mounting assembly and a current bus. The current line installation assembly comprises a linear module and a bearing sleeve. One end of the current bus is connected with a current source, and the other end extends out of the suspended end and is connected with a plug-in electric connector; the current source is provided with a butt joint electric connector used for being detachably connected with the plug-in electric connector, and the butt joint electric connector is electrically connected with the negative electrode of the current source. The to-be-tested current sensor installation tool is used for installing a to-be-tested current sensor, and a to-be-tested test circular hole and a butt joint electric connector of the to-be-tested current sensor are located on a moving path of the bearing sleeve. According to the current line installation structure provided by the utility model, the current sensor to be tested is fixed on the installation tool for the current sensor to be tested, and then the linear module is controlled to work, so that the preparation work of the whole testing device is completed.

Description

Technical Field

[0001] The utility model belongs to the field of current sensor testing, and particularly relates to a current line installation structure and a testing device for current sensor testing. Background Art

[0002] Current sensors are widely used in industries and power fields. The accuracy of current sensors plays a crucial role in the accuracy of test results. Currently, the accuracy detection method of current sensors generally adopts the source-meter method: a standard current source outputs a current through the magnetic core of the current sensor to be tested, and the output current value of the current sensor to be tested is compared with the theoretical value, so as to obtain the accuracy of the current sensor to be tested. Among them, the output current value of the current sensor to be tested is measured by connecting an ammeter at the output end of the current sensor to be tested. The way to obtain the theoretical value is: the primary side or busbar current value divided by the transformation ratio of the standard current sensor. Since the accuracy of the ammeter can be relatively high, the measurement accuracy of this method is mainly limited by the accuracy of the standard current source, and its accuracy level determines the accuracy level of the source-meter method test system. When the range of the current sensor is relatively large, the output accuracy of the large-current standard current source is affected by internal heating, and the accuracy and stability are severely limited. The output of the current source has certain errors, and the stability of the current source output is generally not very good, and it will change with internal heating and other conditions, which are all adverse factors affecting the measurement.

[0003] In view of the above problems, a new current sensor testing device and testing method have been developed. Specifically, refer to the Chinese invention patent "CN107346007B - Current Sensor Testing Device and Testing Method", which solves the problem of testing accuracy. However, during the use process, it is found that when replacing the current sensor to be tested, it is necessary to re-thread the current busbar through the monitoring round hole of the current sensor to be tested and then re-connect the power busbar, which greatly reduces the testing efficiency and wastes manpower. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a current line installation structure and a testing device for current sensor testing with high testing efficiency.

[0005] The utility model provides a current line installation structure for current sensor testing, which includes a current source, a current sensor installation tooling to be tested, a current line installation component, and a current busbar;

[0006] The current line installation component includes a linear module and a bearing sleeve arranged at the output end of the linear module;

[0007] One end of the current bus is electrically connected to the positive / negative pole of the current source, and the other end passes through the fixed end of the bearing sleeve to the suspended end, and a plug-in electrical connector is connected to the part of the current bus extending out of the suspended end.

[0008] The current source is provided with a docking electrical connector for detachably connecting to the plug-in electrical connector at the moving stroke position of the bearing sleeve, and the docking electrical connector is electrically connected to the negative / positive pole of the current source.

[0009] The installation tool for the current sensor to be measured is used to install the current sensor to be measured, and the test hole to be measured of the current sensor to be measured installed on the installation tool for the current sensor to be measured is located on the moving path of the bearing sleeve.

[0010] Furthermore, the bearing sleeve is made of non-magnetic plastic.

[0011] Furthermore, the bearing sleeve is made of a transparent material.

[0012] Furthermore, an electrical connection structure for supplying power and outputting signals to the current sensor to be measured is provided on the installation tool for the current sensor to be measured.

[0013] A cable one electrically connected to the power supply two is further provided on the installation tool for the current sensor to be measured.

[0014] A cable two electrically connected to the ammeter is further provided on the installation tool for the current sensor to be measured.

[0015] Furthermore, a sliding sleeve is provided at the output end of the linear module.

[0016] The bearing sleeve is slidably arranged on the sliding sleeve, a strip-shaped groove is provided on the side wall of the bearing sleeve, and the current bus is slidably arranged in the strip-shaped groove.

[0017] It further includes a sliding driving mechanism for driving the bearing sleeve to slide along the sliding sleeve.

[0018] Furthermore, the sliding driving mechanism includes a motor provided at the output end of the linear module, a gear provided on the output rotating shaft of the motor, and a rack provided on the bearing sleeve.

[0019] Furthermore, the current line installation structure for current sensor testing further includes a drag chain, the drag chain is arranged between the current source and the output end of the linear module, and the part of the current bus between the current source and the output end of the linear module and the cable of the motor are arranged in the drag chain.

[0020] Further, the current line installation structure for current sensor testing further includes a standard current sensor installation tooling for installing a standard current sensor. The standard test round hole of the standard current sensor installed on the standard current sensor installation tooling is located on the moving path of the bearing sleeve.

[0021] Further, an electrical connection structure for supplying power and signal output to the standard current sensor is provided on the standard current sensor installation tooling;

[0022] A cable three electrically connected to a power supply one is further provided on the standard current sensor installation tooling;

[0023] A cable four electrically connected to an ammeter is further provided on the standard current sensor installation tooling.

[0024] The present utility model further provides a testing device, including a current source, a power supply one, a power supply two, a standard current sensor, and an ammeter. The current source is used to provide a primary bus current to the standard current sensor and the current sensor to be tested. The output end of the current source is connected with a current bus, and the current bus is used to sequentially pass through the core A of the current sensor to be tested and the core B of the standard current sensor. The power supply one is connected to the standard current sensor to provide a working voltage to the standard current sensor. The power supply two is used to be connected to the current sensor to be tested to provide a working voltage to the current sensor to be tested. The secondary output end of the standard current sensor is connected to the secondary output end of the current sensor to be tested, and both secondary output ends are connected to the input end of the ammeter. The passing direction of the current bus on the core B of the standard current sensor and the core A of the current sensor to be tested is opposite, so that the output current directions of the secondary output ends of the standard current sensor and the current sensor to be tested are opposite. The ammeter is used to measure the current sum value after partial or all of the output currents of the standard current sensor and the current sensor to be tested offset each other, so as to judge the accuracy of the current sensor to be tested according to this current sum value;

[0025] This testing device further includes the above-mentioned current line installation structure for current sensor testing.

[0026] The beneficial effect of the present utility model is that for the current line installation structure for current sensor testing provided by the present utility model, only the current sensor to be tested needs to be fixed on the current sensor installation tooling to be tested, and then controlling the linear module to work can achieve two operations: the current bus sequentially passes through the to-be-tested round hole of the current sensor to be tested and the positive and negative poles of the current bus are conducted with the current source, completing the preparation work of the entire testing device, thereby simplifying the installation process of the testing device, improving the testing efficiency, and reducing the labor cost. Description of the Drawings

[0027] AppendixFigure 1 Schematic diagram of the electrical connection relationship of the test device in the present utility model;

[0028] Appendix Figure 2 Top view of the present utility model;

[0029] Appendix Figure 3 Schematic diagram of the structure of the present utility model before the linear module moves without a sliding sleeve;

[0030] Appendix Figure 4 Schematic diagram of the structure of the present utility model after the linear module moves without a sliding sleeve;

[0031] Appendix Figure 5 Schematic diagram of the structure of the present utility model before the linear module moves with a sliding sleeve;

[0032] Appendix Figure 6 Partial enlarged view of the current wire installation component of the present utility model when a sliding sleeve is provided;

[0033] Appendix Figure 7 Schematic diagram of the structure of the present utility model after the linear module moves and the bearing sleeve slides when a sliding sleeve is provided;

[0034] Appendix Figure 8 For appendix Figure 7 Partial enlarged view at A in

[0035] In the figure, 1 - current source; 11 - current busbar; 2 - power supply one; 3 - power supply two; 4 - standard current sensor; 41 - core B; 42 - standard test round hole; 5 - ammeter; 6 - current sensor to be measured; 61 - core A; 62 - test round hole to be measured; 7 - controller; 8 - installation tooling for the current sensor to be measured; 81 - cable one; 82 - cable two; 9 - current wire installation component; 91 - linear module; 92 - bearing sleeve; 921 - fixed end; 922 - suspended end; 923 - strip-shaped groove; 924 - limiting ring; 93 - sliding sleeve; 94 - motor; 95 - gear; 96 - rack; 97 - L-shaped mounting plate; 10 - plug-in electrical connector; 101 - docking electrical connector; 102 - drag chain; 103 - installation tooling for the standard current sensor; 1031 - cable three; 1032 - cable four. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0037] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship, movement conditions, etc. between components in a certain specific posture (as shown in the attached drawings). If this specific posture changes, the directional indications will also change accordingly.

[0038] In addition, in the present utility model, descriptions such as "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0039] In the present utility model, unless otherwise clearly specified and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, a physical connection or a wireless communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0040] In addition, the technical solutions between the various embodiments of the present utility model can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0041] As shown in the attached Figure 1 -attached Figure 8 drawings, the present utility model provides a current line installation structure for testing a current sensor, which is used to automatically pass a current busbar 11 through a to-be-tested test round hole 62 of a to-be-tested current sensor 6 when testing the to-be-tested current sensor 6, so as to realize the docking between the to-be-tested current sensor 6 and the current busbar 11, and includes a current source 1, a to-be-tested current sensor installation tooling 8, a current line installation assembly 9 and a current busbar 11;

[0042] Refer to the attached Figure 2 -attached Figure 4, the current line installation assembly 9 includes a linear module 91 and a bearing sleeve 92 provided at the output end of the linear module 91. The bearing sleeve 92 is used to bear the current busbar 11. Preferably, an L-shaped mounting plate 97 is provided at the output end of the linear module 91. The horizontal plate of the L-shaped mounting plate 97 is fixed on the output slider of the linear module 91, and the bearing sleeve 92 is fixed on the vertical plate of the L-shaped mounting plate 97; the bearing sleeve 92 includes a fixed end 921 and a suspended end 922. The fixed end 921 is the end fixed to the vertical plate of the L-shaped mounting plate 97, and the suspended end 922 is the end of the bearing sleeve 92 away from the vertical plate of the L-shaped mounting plate 97;

[0043] One end of the current busbar 11 is electrically connected to the positive / negative pole of the current source 1, and the other end passes from the fixed end 921 of the bearing sleeve 92 to the suspended end 922. And a plug-in electrical connector 10 is connected to the end of the current busbar 11 extending out of the suspended end 922. Preferably, a limiting convex ring is provided at the end of the current busbar 11, and the limiting convex ring is arranged between the current busbar 11 and the plug-in electrical connector 10 for fixing the plug-in electrical connector 10 at the end of the suspended end 922;

[0044] The current source 1 is provided with a docking electrical connector 101 for detachably connecting with the plug-in electrical connector 10 at the moving stroke position of the bearing sleeve 92. The docking electrical connector 101 is electrically connected to the negative / positive pole of the current source 1. At this time, when the linear module 91 drives the bearing sleeve 92 to move to the position of the current source 1, the connection between the plug-in electrical connector 10 and the docking electrical connector 101 can be realized, and then the connection between the positive and negative poles of the current busbar 11 and the current source 1 can be realized, and the current flow of the current busbar 11 can be realized;

[0045] The current sensor to be tested installation tooling 8 is used to install the current sensor 6 to be tested. The to-be-tested test round hole 62 of the current sensor 6 to be tested installed on the current sensor to be tested installation tooling 8 is located on the moving path of the bearing sleeve 92. At this time, during the process that the linear module 91 drives the bearing sleeve 92 to move to the position of the current source 1, the current busbar 11 passes through the to-be-tested test round hole 62 of the current sensor 6 to be tested, and then the connection between the current busbar 11 and the current sensor 6 to be tested is realized.

[0046] The current line installation structure for current sensor testing provided by the present utility model only needs to fix the current sensor 6 to be tested on the current sensor to be tested installation tooling 8, and then control the linear module 91 to work to realize two operations that the current busbar 11 passes through the to-be-tested test round hole 62 of the current sensor 6 to be tested and the positive and negative poles of the current busbar 11 are conducted with the current source 1 in sequence, complete the preparation work of the entire testing device, and then simplify the installation process of the testing device, improve the testing efficiency, and reduce the labor cost.

[0047] In one embodiment, the bearing sleeve 92 is made of non-magnetic plastic. At this time, during the test, the bearing sleeve 92 remains between the current busbar 11 and the test round hole 62 to be measured. Since the bearing sleeve 92 is made of non-magnetic plastic, it will neither generate magnetic interference nor conduct electricity, so it will not cause eddy currents to avoid interfering with the magnetic field distribution and affecting the test accuracy of the current sensor 6 to be measured.

[0048] In one embodiment, the bearing sleeve 92 is made of a transparent material, so that the docking state between the current busbar 11 and the test round hole 62 to be measured can be observed.

[0049] In one embodiment, an electrical connection structure for supplying power and outputting signals to the current sensor 6 to be measured is provided on the current sensor mounting tooling 8 to be measured;

[0050] The current sensor mounting tooling 8 to be measured is further provided with a first cable 81 electrically connected to the second power supply 3;

[0051] The current sensor mounting tooling 8 to be measured is further provided with a second cable 82 electrically connected to the ammeter 5;

[0052] At this time, after the current sensor 6 to be measured is mounted on the current sensor mounting tooling 8 to be measured, the current sensor 6 to be measured can be directly electrically connected to the second power supply 3 and the ammeter 5, thereby simplifying the difficulty of electrical connection of the current sensor 6 to be measured. Preferably, a quick-installation structure adapted to the current sensor 6 to be measured can be provided on the current sensor mounting tooling 8 to be measured, thereby improving the disassembly and assembly effect of the current sensor 6 to be measured and facilitating switching the current sensor 6 to be measured for testing. The quick-installation structure can be structures such as grooves and buckles.

[0053] In one embodiment, referring to Appendix Figure 5 - Appendix Figure 8 , a sliding sleeve 93 is provided at the output end of the linear module 91;

[0054] The bearing sleeve 92 is slidably arranged on the sliding sleeve 93. By providing the sliding sleeve 93, the sliding stability of the bearing sleeve 92 can be improved. A strip-shaped groove 923 is provided on the side wall of the bearing sleeve 92, and the current busbar 11 is slidably arranged in the strip-shaped groove 923. At this time, during the sliding process of the bearing sleeve 92, the continuous docking of the electrical connector 10 and the docking electrical connector 101 on the current busbar 11 can be ensured;

[0055] It further includes a sliding driving mechanism for driving the bearing sleeve 92 to slide along the sliding sleeve 93.

[0056] In this embodiment, after the linear module 91 drives the bearing sleeve 92 to abut against the current source 1, and the plug-in electrical connector 10 and the docking electrical connector 101 are docked, the bearing sleeve 92 can be driven to reset independently by the sliding drive mechanism. At this time, only the current bus 11 is retained in the test circular hole 62 of the current sensor 6 to be tested, so that any interference caused by the bearing sleeve 92 to the current sensor 6 to be tested can be avoided, thereby ensuring the test accuracy.

[0057] Preferably, a limiting ring 924 is provided on one side of the fixed end 921 of the bearing sleeve 92 , and the limiting ring 924 abuts against an end of the vertical plate of the L-shaped mounting plate 97 away from the current source 1 .

[0058] In one embodiment, referring to the attached Figure 6 The sliding drive mechanism includes a motor 94 disposed on the output end of the linear module 91, a gear 95 disposed on the output shaft of the motor 94, and a rack 96 disposed on the bearing sleeve 92. In this embodiment, the structural size of the sliding drive mechanism can be guaranteed, and the sliding drive mechanism can be moved along with the L-shaped mounting plate 97 as a whole. The cooperation of the gear 95 and the rack 96 can also provide self-locking when the motor 94 stops working, thereby locking the position of the bearing sleeve 92.

[0059] In one embodiment, the current line installation structure for current sensor testing also includes a drag chain 102, which is arranged between the current source 1 and the output end of the linear module 91. The portion of the current bus 11 between the current source 1 and the output end of the linear module 91 and the cable of the motor 94 are arranged in the drag chain 102. By setting up the drag chain 102, the layout of the cables of the current bus 11 and the motor 94 is facilitated, thereby ensuring the connection stability of the cables of the current bus 11 and the motor 94 during the movement of the linear module 91.

[0060] Preferably, the cable of the motor 94 is directly connected to the current source 1 and is powered by the current source 1 , and the linear module 91 is also powered by the current source 1 .

[0061] In one embodiment, the current line installation structure for current sensor testing further includes a standard current sensor installation tool 103, wherein the standard current sensor installation tool 103 is used to install a standard current sensor 4, and a standard test circular hole 42 of the standard current sensor 4 installed on the standard current sensor installation tool 103 is located on the moving path of the bearing sleeve 92;

[0062] At this time, the linear module 91 can work to realize three operations: the current bus 11 passes through the test circular hole 62 of the current sensor 6 to be tested, the standard test circular hole 42 of the standard current sensor 4, and the current bus 11 is connected to the positive and negative poles of the current source 1.

[0063] In one embodiment, the standard current sensor installation tool 103 is provided with an electrical connection structure for power supply and signal output with the standard current sensor 4;

[0064] The standard current sensor installation tool 103 is also provided with a cable 3 1031 electrically connected to the power supply 1 2;

[0065] The standard current sensor installation tool 103 is also provided with a cable 1032 electrically connected to the ammeter 5;

[0066] At this time, after the standard current sensor 4 is installed on the standard current sensor installation tool 103, the standard current sensor 4 can be directly electrically connected to the power supply 23 and the ammeter 5, thereby simplifying the difficulty of electrical connection of the standard current sensor 4. Preferably, a quick-installation structure adapted to the standard current sensor 4 can be provided on the standard current sensor installation tool 103, thereby improving the disassembly and assembly effect of the standard current sensor 4, and facilitating the switching of the standard current sensor 4 for testing, and the quick-installation structure can be a groove, a buckle, or the like.

[0067] Reference Figure 1 The utility model also provides a test device, including a current source 1, a power supply 1 2, a power supply 2 3, a standard current sensor 4 and an ammeter 5, wherein the current source 1 is used to provide a primary bus current to the standard current sensor 4 and the current sensor 6 to be measured, and the output end of the current source 1 is connected to a current bus 11, and the current bus 11 is used to sequentially pass through the magnetic core A61 of the current sensor 6 to be measured and the magnetic core B41 of the standard current sensor 4, the power supply 1 2 is connected to the standard current sensor 4 to provide a working voltage to the standard current sensor 4, and the power supply 2 3 is used to connect to the current sensor 6 to be measured to be measured The current sensor The sensor 6 provides a working voltage, the secondary output end of the standard current sensor 4 is connected to the secondary output end of the current sensor 6 to be measured, and the secondary output ends of both are connected to the input end of the ammeter 5, and the current bus 11 is arranged in opposite directions on the magnetic core B41 of the standard current sensor 4 and the magnetic core A61 of the current sensor 6 to be measured, so that the output current directions of the secondary output ends of the standard current sensor 4 and the current sensor 6 to be measured are opposite, and the ammeter 5 is used to measure the current sum value after the output currents of the standard current sensor 4 and the current sensor 6 to be measured are partially or completely offset, so as to judge the accuracy of the current sensor 6 to be measured according to the current sum value;

[0068] This test device further includes the above current line installation structure for current sensor testing.

[0069] In this embodiment, the standard current sensor 4 is a current sensor with adjustable turns ratio. Before testing, the turns ratio of the standard current sensor 4 is adjusted to be the same as or close to that of the current sensor 6 to be tested, so that the sum of the currents is always close to zero.

[0070] In this embodiment, the current source 1 is a controllable DC current source with adjustable output current (i.e., the primary bus current) magnitude and replaceable output current (i.e., the primary bus current) direction.

[0071] The test device of this embodiment further includes a controller 7. The current source 1 is electrically connected and controlled by the controller 7. The controller 7 is used to control the magnitude and direction of the primary bus current output by the current source 1. The output end of the ammeter 5 is connected to the controller 7. The controller 7 is also used to read the sum of the currents measured by the ammeter 5 and calculate the output current value of the current sensor 6 to be tested. The specific test process of the test device provided in this embodiment can be specifically referred to in the Chinese invention patent "CN107346007B - Current Sensor Test Device and Test Method".

[0072] Of course, the current line installation structure for current sensor testing in the present utility model can also be used for testing current sensor test devices of other structures, such as testing closed or open Hall current sensors.

[0073] The above is only this embodiment and does not impose any limitation on the present utility model. Any person skilled in the art can, without departing from the scope of the technical solution of the present utility model, make many possible changes, modifications or equivalents to the technical solution of the present utility model by using the disclosed technical content above. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model shall fall within the scope of protection of the technical solution of the present utility model.

Claims

1. A current line installation structure for current sensor testing, characterized in that: It comprises a current source (1), a current sensor installation tool (8), a current line installation component (9) and a current busbar (11); The current line installation assembly (9) comprises a linear module (91) and a bearing sleeve (92) arranged at the output end of the linear module (91); One end of the current busbar (11) is electrically connected to the positive / negative pole of the current source (1), and the other end passes through the fixed end (921) of the bearing sleeve (92) to the suspended end (922), and the current busbar (11) extends out of the suspended end (922) and is connected to a plug-in electrical connector (10); The current source (1) is provided with a docking electrical connector (101) for detachably connecting to the plug-in electrical connector (10) at a moving stroke position of the bearing sleeve (92), and the docking electrical connector (101) is electrically connected to the negative / positive pole of the current source (1); The current sensor to be measured installation tool (8) is used to install the current sensor to be measured (6), and the circular test hole (62) to be measured of the current sensor to be measured (6) installed on the current sensor to be measured installation tool (8) is located on the moving path of the bearing sleeve (92).

2. The current line installation structure for current sensor testing according to claim 1, characterized in that: The bearing sleeve (92) is made of non-magnetic plastic.

3. The current line installation structure for current sensor testing according to claim 2, characterized in that: The bearing sleeve (92) is made of a transparent material.

4. The current line installation structure for current sensor testing according to claim 1, characterized in that: The current sensor to be measured installation tool (8) is provided with an electrical connection structure for supplying power and outputting signals to the current sensor to be measured (6); The current sensor to be measured installation tool (8) is also provided with a first cable (81) electrically connected to the second power supply (3); The current sensor to be measured installation tool (8) is also provided with a second cable (82) electrically connected to the ammeter (5).

5. The current line installation structure for current sensor testing according to any one of claims 1 to 4, characterized in that: A sliding sleeve (93) is provided on the output end of the linear module (91); The bearing sleeve (92) is slidably arranged on the sliding sleeve (93); a strip groove (923) is arranged on a side wall of the bearing sleeve (92); and the current busbar (11) is slidably arranged in the strip groove (923); It also includes a sliding drive mechanism for driving the bearing sleeve (92) to slide along the sliding sleeve (93).

6. The current line installation structure for current sensor testing according to claim 5, characterized in that: The sliding drive mechanism comprises a motor (94) arranged on the output end of the linear module (91), a gear (95) arranged on the output shaft of the motor (94), and a rack (96) arranged on the bearing sleeve (92).

7. The current line installation structure for current sensor testing according to claim 6, characterized in that: It also includes a drag chain (102), wherein the drag chain (102) is arranged between the current source (1) and the output end of the linear module (91), and the portion of the current busbar (11) located between the current source (1) and the output end of the linear module (91) and the cable of the motor (94) are arranged in the drag chain (102).

8. The current line installation structure for current sensor testing according to any one of claims 1 to 4, 6 and 7, characterized in that: It also includes a standard current sensor installation tool (103), the standard current sensor installation tool (103) is used to install a standard current sensor (4), and the standard test circular hole (42) of the standard current sensor (4) installed on the standard current sensor installation tool (103) is located on the moving path of the bearing sleeve (92).

9. The current line installation structure for current sensor testing according to claim 8, characterized in that: The standard current sensor installation tool (103) is provided with an electrical connection structure for supplying power to the standard current sensor (4) and outputting signals; The standard current sensor installation tool (103) is also provided with a cable three (1031) electrically connected to the power supply one (2); The standard current sensor installation tool (103) is also provided with a cable 4 (1032) electrically connected to the ammeter (5).

10. A testing device, characterized in that: The invention comprises a current source (1), a power supply 1 (2), a power supply 2 (3), a standard current sensor (4) and an ammeter (5), wherein the current source (1) is used to provide a primary bus current to the standard current sensor (4) and the current sensor to be measured (6), the output end of the current source (1) is connected to a current bus (11), the current bus (11) is used to sequentially pass through a magnetic core A (61) of the current sensor to be measured (6) and a magnetic core B (41) of the standard current sensor (4), the power supply 1 (2) is connected to the standard current sensor (4) to provide a working voltage to the standard current sensor (4), and the power supply 2 (3) is connected to the current sensor to be measured (6) to provide a working voltage to the current sensor to be measured ( 6) providing a working voltage, the secondary output end of the standard current sensor (4) is connected to the secondary output end of the current sensor to be measured (6), and the secondary output ends of both are connected to the input end of the ammeter (5), the current busbar (11) is arranged in opposite directions on the magnetic core B (41) of the standard current sensor (4) and the magnetic core A (61) of the current sensor to be measured (6), so that the output current directions of the secondary output ends of the standard current sensor (4) and the current sensor to be measured (6) are opposite, and the ammeter (5) is used to measure the current sum value after the output currents of the standard current sensor (4) and the current sensor to be measured (6) are partially or completely offset, so as to judge the accuracy of the current sensor to be measured (6) according to the current sum value; It also includes a current line installation structure for current sensor testing as described in any one of claims 1-9.

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