Contact type wireless electricity testing device for switch cabinet

Abstract

The invention relates to the technical field of electricity testing devices, and discloses a switch cabinet contact type wireless electricity testing device which comprises a main body part, an installation part and a metal middleware. A detection unit, a signal processing circuit and a wireless transmitting unit are arranged in the main body part, the output end of the detection unit is electrically connected with the input end of the signal processing circuit, and the output end of the signal processing circuit is electrically connected with the input end of the wireless transmitting unit. The installation part is arranged on one side of the main body part and provided with a first through hole extending in the first direction and communicating with the two sides of the installation part, and the end, away from the main body part, of the first through hole is used for containing an electricity testing object. The metal middleware comprises a fixed part and a convex part fixedly arranged on the fixed part, the fixed part is arranged on the main body part, the convex part extends into the first through hole from one end, close to the main body part, of the first through hole, and the detection unit is electrically connected with the metal middleware.

Description

Technical Field

[0001] The invention relates to the technical field of electric testing devices, in particular to a contact type wireless electric testing device for a switch cabinet. Background Art

[0002] At present, before carrying out maintenance and inspection on high-voltage live places in the power industry, such as high-voltage transmission lines, high-voltage switchgear, transformers and other equipment, it is necessary to shut down the equipment to be maintained and inspected according to regulations before the operation can be carried out. However, in actual work, due to equipment failure or human operating errors, the equipment to be maintained and inspected has not been truly powered off, posing a great threat to the personal safety of operators and the safety of equipment. The tool for verifying whether high-voltage equipment is energized is a high-voltage tester, which detects the current flowing through the stray capacitance of the tester to the ground to check whether the equipment and lines are energized. The existing switch cabinet tester is not convenient to connect to the switch cabinet, which makes the operation more complicated, which is not conducive to improving the efficiency of the test, and the connection is not stable enough, resulting in poor accuracy of the test results.

[0003] Therefore, there is an urgent need for a switch cabinet contact type wireless electrical testing device to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a contact type wireless electric testing device for a switch cabinet, so as to improve the electric testing efficiency and the accuracy of the electric testing result.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A contact type wireless electric testing device for a switch cabinet, characterized by comprising:

[0007] A main body component, in which a detection unit, a signal processing circuit and a wireless transmitting unit are arranged, the output end of the detection unit is electrically connected to the input end of the signal processing circuit, and the output end of the signal processing circuit is electrically connected to the input end of the wireless transmitting unit;

[0008] A mounting member, which is arranged on one side of the main body component, the mounting member is provided with a first through hole extending along a first direction and connecting two sides of the mounting member, and an end of the first through hole away from the main body component is used to accommodate an electrical test object;

[0009] The metal intermediate piece includes a fixing portion and a protrusion fixed on the fixing portion, wherein the fixing portion is arranged on the main component, and the protrusion extends into the first through hole from one end of the first through hole close to the main component, and the detection unit is electrically connected to the metal intermediate piece.

[0010] As an improvement of the above technical solution, the mounting member includes:

[0011] An annular bottom plate, which is fixedly connected to the main body component;

[0012] The peripheral wall is fixedly arranged on a side of the annular bottom plate away from the main body component. The peripheral wall and the annular bottom plate are coaxially arranged. The inner cavity of the annular bottom plate is connected with the inner cavity of the peripheral wall to form the first through hole. The inner cavity of the peripheral wall is used to accommodate the electrical test object. The protrusion passes through the inner cavity of the annular bottom plate and extends into the inner cavity of the peripheral wall.

[0013] As an improvement of the above technical solution, a plurality of anti-slip protrusions are arranged at intervals along the circumference of the peripheral wall on the inner side of the peripheral wall, and the anti-slip protrusions all extend along the first direction.

[0014] As an improvement of the above technical solution, the anti-slip protrusion can undergo elastic deformation.

[0015] As an improvement of the above technical solution, the minimum diameter of the inner ring of the peripheral wall is greater than the diameter of the inner ring of the annular bottom plate.

[0016] As an improvement of the above technical solution, the fixing portion is clamped between the annular bottom plate and the main body component.

[0017] As an improvement of the above technical solution, the fixing part and the protruding part are coaxially arranged, the outer diameter of the fixing part is larger than the outer diameter of the protruding part, a receiving groove is provided on the side of the annular bottom plate facing the main part, and the outer edge of the fixing part is arranged in the receiving groove.

[0018] As an improvement of the above technical solution, an indicating device is further provided on the main body component, an input end of the indicating device is electrically connected to an output end of the signal processing circuit, and a plurality of the indicating devices are arranged at intervals along the circumference of the main body component.

[0019] As an improvement of the above technical solution, it also includes connecting screws. The annular base plate is provided with a plurality of connecting holes arranged circumferentially at intervals along the first through hole, and the connecting holes all extend along the first direction. The connecting screws pass through the connecting holes to connect the annular base plate to the main body component.

[0020] As an improvement of the above technical solution, avoidance holes corresponding to the connecting holes are arranged on the peripheral wall, and the avoidance holes are coaxially arranged with the corresponding connecting holes.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The contact wireless electricity testing device for a switch cabinet of the present invention is used by sleeve-mounting one end of the mounting part away from the main body part onto the electricity testing object, so that the electricity testing object is extended into the first through hole, thereby realizing a stable connection between the contact wireless electricity testing device for the switch cabinet and the electricity testing object, and the protrusion of the metal intermediate part extends from one end of the first through hole close to the main body part into the first through hole, so that the electricity testing object inserted into the first through hole can stably contact the metal intermediate part, and then the metal intermediate part in contact with the electricity testing object is detected by the cooperation of the detection unit and the signal processing circuit, so as to judge whether the electricity testing object is charged. If the electricity testing object is charged, the wireless transmitting unit sends a charged indication signal, and the operation and maintenance personnel can know that the electricity testing object is charged by receiving the charged indication signal sent by the wireless transmitting unit through the external receiver. If the external receiver does not receive the charged indication signal sent by the wireless transmitting unit, it means that the electricity testing object is not charged. The contact wireless electricity testing device for a switch cabinet of the present invention can be very conveniently connected to the electricity testing object, and the metal intermediate part is in stable contact with the electricity testing object, and the electricity testing result is more accurate. In addition, the electrical test results can be sent wirelessly over long distances, improving safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The structure of the contact type wireless electric test device for switch cabinet provided by the embodiment of the present invention is shown in FIG. Figure 1 ;

[0024] Figure 2 The structure of the contact type wireless electric test device for switch cabinet provided by the embodiment of the present invention is shown in FIG. Figure 2 ;

[0025] Figure 3 It is a structural schematic diagram of a metal intermediate piece of a contact-type wireless electric detection device for a switch cabinet provided in an embodiment of the present invention;

[0026] Figure 4 The structure diagram of the installation part of the contact type wireless electric detection device for switch cabinet provided by the embodiment of the present invention is Figure 1 ;

[0027] Figure 5 Schematic diagram of the installation part of the contact type wireless electric detection device for switch cabinet provided by the embodiment of the present invention Figure 2 ;

[0028] Figure 6 It is a schematic diagram of a partial structure of a contact type wireless electrical testing device for a switch cabinet provided in an embodiment of the present invention.

[0029] In the figure:

[0030] 1. Main body; 11. Detection unit; 12. Indicator; 13. Housing; 14. Cover; 15. Opening;

[0031] 2. Mounting member; 21. First through hole; 22. Annular bottom plate; 221. Accommodation groove; 222. Connection hole; 23. Peripheral wall; 231. Anti-slip protrusion; 232. Avoidance hole;

[0032] 3. Metal intermediate part; 31. Fixing part; 32. Raised part;

[0033] 4. Connect the screws. DETAILED DESCRIPTION

[0034] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0035] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] In the description of this embodiment, the terms "upper", "lower", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0038] like Figure 1-Figure 6As shown, this embodiment provides a contact wireless electrical testing device for a switch cabinet, comprising a main body part 1, a mounting part 2 and a metal middle part 3. A detection unit 11, a signal processing circuit and a wireless transmitting unit are arranged in the main body part 1. The output end of the detection unit 11 is electrically connected to the input end of the signal processing circuit, and the output end of the signal processing circuit is electrically connected to the input end of the wireless transmitting unit. The mounting part 2 is arranged on one side of the main body part 1. The mounting part 2 is provided with a first through hole 21 extending along a first direction and connecting the two sides of the mounting part 2. The end of the first through hole 21 away from the main body part 1 is used to accommodate an electrical testing object. The metal middle part 3 includes a fixing part 31 and a protrusion 32 fixedly arranged on the fixing part 31. The fixing part 31 is arranged on the main body part 1. The protrusion 32 extends into the first through hole 21 from one end of the first through hole 21 close to the main body part 1. The detection unit 11 is electrically connected to the metal middle part 3.

[0039] When using the contact wireless electrical testing device for a switch cabinet of this embodiment, the end of the mounting member 2 away from the main component 1 is sleeved onto the electrical testing object, so that the electrical testing object is extended into the first through hole 21, thereby realizing a stable connection between the contact wireless electrical testing device for the switch cabinet and the electrical testing object, and the raised portion 32 of the metal intermediate piece 3 extends from the end of the first through hole 21 close to the main component 1 to the first through hole 21, so that the electrical testing object inserted into the first through hole 21 can be in stable contact with the metal intermediate piece 3, and then the metal intermediate piece 3 in contact with the electrical testing object is detected by the detection unit 11 and the signal processing circuit, so as to determine whether the electrical testing object is charged. If the electrical testing object is charged, the wireless transmitting unit sends a charged indication signal, and the operation and maintenance personnel can know that the electrical testing object is charged by receiving the charged indication signal sent by the wireless transmitting unit through the external receiver. If the external receiver does not receive the charged indication signal sent by the wireless transmitting unit, it means that the electrical testing object is not charged. The switch cabinet contact wireless electric test device of this embodiment can be easily connected to the electric test object, and the metal middle piece 3 is in stable contact with the electric test object, and the electric test result is more accurate. In addition, the electric test result can be wirelessly transmitted over a long distance, which improves the safety of use.

[0040] In this embodiment, the object of electrical testing is the switch cabinet cable connector. By detecting the charged state of the switch cabinet cable connector, the charged state of the line can be known. In specific operation, the contact wireless electrical testing device of the switch cabinet is sent to the switch cabinet cable connector through the insulating rod tool, and the mounting part 2 is mounted on the bolt head end of the bolt of the switch cabinet cable connector. The detection unit 11 uses a Hall element to detect the electric field strength. An opening 15 is provided on the main body 1, and the detection unit 11 is arranged in the opening 15 and is in direct contact with the metal middle piece 3. The detection signal of the Hall element is processed by the signal processing circuit and then transmitted to the outside through the wireless transmitting unit. The remote transmission of the detection result of whether it is charged is realized by cooperating with the receiver. The processing of the detection data by the signal processing circuit belongs to the conventional technology in this field and will not be elaborated here.

[0041] Optionally, the metal middle piece 3 in this embodiment is a magnet. After the mounting piece 2 is put on the object of electrical testing, the metal middle piece 3 is adsorbed on the object of electrical testing to ensure that the metal middle piece 3 is in contact with the object of electrical testing, thereby further improving the stability of the connection of the contact wireless electrical testing device of the switch cabinet, especially the stability of the connection between the metal middle piece 3 and the object of electrical testing, thereby ensuring the accuracy of the electrical testing results.

[0042] Alternatively, if Figure 1 , Figure 2 and Figure 4 As shown, the mounting member 2 includes an annular base plate 22 and a peripheral wall 23. The annular base plate 22 is fixedly connected to the main body part 1. The peripheral wall 23 is fixedly arranged on the side of the annular base plate 22 away from the main body part 1, and the peripheral wall 23 is coaxially arranged with the annular base plate 22. The inner cavity of the annular base plate 22 is connected with the inner cavity of the peripheral wall 23 to form a first through hole 21, and the inner cavity of the peripheral wall 23 is used to accommodate the object of electrical testing. The thickness of the metal intermediate member 3 is greater than or equal to the thickness of the annular base plate 22, so that the object of electrical testing can be in close contact with the metal intermediate member 3. Preferably, the thickness of the metal intermediate member 3 is greater than the thickness of the annular base plate 22, that is, the protrusion 32 passes through the inner cavity of the annular base plate 22 and extends into the inner cavity of the peripheral wall 23. The annular bottom plate 22 is used to connect the main body 1, and the peripheral wall 23 is used to be mounted on the test object to connect the switch cabinet contact wireless test device and the test object. The protrusion 32 extends into the inner cavity of the peripheral wall 23, so that the test object accommodated in the inner cavity of the peripheral wall 23 can contact the metal intermediate piece 3, so that the test object, the detection unit 11 and the signal processing circuit form a detection loop. For the sake of sealing and process convenience, the annular bottom plate 22 and the peripheral wall 23 are an integrated structure.

[0043] Furthermore, if Figure 1 and Figure 4As shown, a plurality of anti-skid protrusions 231 are arranged at intervals along the circumference of the peripheral wall 23 on the inner side of the peripheral wall 23, and the anti-skid protrusions 231 all extend along the first direction. The anti-skid protrusions 231 increase the friction between the peripheral wall 23 and the object to be tested, so that after the mounting member 2 is mounted on the object to be tested, the position between the contact wireless test device for the switch cabinet and the object to be tested is relatively stable.

[0044] Optionally, the anti-skid protrusion 231 can be elastically deformed to prevent the anti-skid protrusion 231 from hindering the installation process when the mounting member 2 is installed on the electrical test object, so as to facilitate the quick connection between the mounting member 2 and the electrical test object.

[0045] Furthermore, the minimum diameter of the inner circle of the peripheral wall 23 is smaller than the outer diameter of the object to be tested. The minimum diameter of the inner circle of the peripheral wall 23 is also the diameter of the area enclosed by the tops of the anti-slip protrusions 231. This diameter is smaller than the outer diameter of the object to be tested. That is to say, when the mounting member 2 is mounted on the object to be tested, the anti-slip protrusions 231 will undergo elastic deformation, thereby making the connection between the mounting member 2 and the object to be tested more stable, thereby preventing the switch cabinet contact wireless test device from shaking after being connected to the test object, and further improving the accuracy of the test.

[0046] Furthermore, if Figure 1 and Figure 4 As shown, the minimum diameter of the inner circle of the peripheral wall 23 is larger than the diameter of the inner circle of the annular bottom plate 22. That is to say, the outer diameter of the object to be tested is larger than the inner diameter of the annular bottom plate 22. After the object to be tested extends into the peripheral wall 23, the positive projection of the object to be tested on the annular bottom plate 22 completely covers the inner cavity of the annular bottom plate 22, so that there is a sufficiently large contact area between the metal intermediate piece 3 extending into the peripheral wall 23 through the inner cavity of the annular bottom plate 22 and the object to be tested, ensuring full contact between the two.

[0047] Alternatively, if Figure 6 As shown, the main body 1 includes a shell 13 and a cover 14 matched with the shell 13. The shell 13 is a regular hexagon, and the regular hexagonal shell 13 is configured to be compatible with the existing insulating rod tool, so that the switch cabinet contact wireless electric detection device can be installed on the bolt at the switch cabinet cable joint remotely through the insulating tool rod. The opening 15 of the main body 1 for installing the detection unit 11 is set on the cover 14, the signal processing circuit and the wireless transmission unit are both arranged in the shell 13, and the detection unit 11 is arranged in the shell 13 and exposed through the opening 15 to detect the metal intermediate part 3.

[0048] Alternatively, if Figure 1 , Figure 3 , Figure 5 and Figure 6As shown, the fixing portion 31 is sandwiched between the annular bottom plate 22 and the main body 1 to ensure a stable connection between the metal intermediate piece 3, the mounting piece 2 and the main body 1, to ensure the relative position of the metal intermediate piece 3, the mounting piece 2 and the main body 1 is stable, and to avoid poor contact between the metal intermediate piece 3 and the object of electrical testing. Specifically, the fixing portion 31 and the protruding portion 32 are coaxially arranged, the outer diameter of the fixing portion 31 is larger than the outer diameter of the protruding portion 32, and a receiving groove 221 is arranged on the side of the annular bottom plate 22 facing the main body 1. The diameter of the receiving groove 221 is larger than the inner diameter of the annular bottom plate 22 and smaller than the outer diameter of the annular bottom plate 22. The outer edge of the fixing portion 31 is arranged in the receiving groove 221, that is, the outer edge of the fixing portion 31 is sandwiched between the annular bottom plate 22 and the main body 1. In this embodiment, the fixing portion 31 and the protruding portion 32 are both cylindrical, and the fixing portion 31 and the protruding portion 32 form a double-layer step structure. In this embodiment, the shell 13, the cover plate 14, the annular bottom plate 22 and the peripheral wall 23 are all made of insulating materials. The metal middle piece 3 is fixed by clamping the fixing part 31 between the annular bottom plate 22 and the main part 1. There is no need to use an additional connecting part to connect the metal middle piece 3 and the main part 1, thereby solving the problem of fixing the metal middle piece 3 and the problem of detecting the live part 1 at the same time.

[0049] Alternatively, if Figure 6 As shown, the main body 1 is also provided with an indicating device 12, the input end of the indicating device 12 is electrically connected to the output end of the signal processing circuit, and a plurality of indicating devices 12 are arranged at intervals along the circumference of the main body 1. In this embodiment, the housing 13 is provided with mounting holes corresponding to the indicating devices 12, which are used to install the indicating devices 12. The indicating devices 12 are indicator lights. After the contact wireless electric test device of the switch cabinet is connected to the electric test object, if the electric test object is charged, the indicating device 12 lights up.

[0050] Alternatively, if Figure 6 As shown, the contact wireless electrical testing device for switch cabinet provided in this embodiment also includes a connecting screw 4. A plurality of connecting holes 222 arranged circumferentially spaced along the first through hole 21 are provided on the annular bottom plate 22. The connecting holes 222 all extend along the first direction. The connecting screw 4 passes through the connecting hole 222 to connect the annular bottom plate 22 to the main body part 1. The plurality of connecting screws 4 connecting the annular bottom plate 22 and the main body part 1 can ensure the stable connection between the mounting member 2 and the main body part 1, thereby ensuring the stable installation of the metal middle part 3 and avoiding the shaking of the metal middle part 3 during the electrical testing process. A plurality of mounting posts are provided in the housing 13. The mounting posts are arranged one-to-one with the connecting holes 222. The connecting screw 4 passes through the connecting hole 222 and the cover body 14 and is threadedly connected to the mounting post, thereby connecting the mounting member 2 and the main body part 1 together.

[0051] Furthermore, if Figure 1 and Figure 4As shown, the peripheral wall 23 is provided with avoidance holes 232 corresponding to the connecting holes 222 one by one, and the avoidance holes 232 are coaxially arranged with the corresponding connecting holes 222. By providing the avoidance holes 232 on the peripheral wall 23, the installation and removal of the connecting screws 4 are facilitated.

[0052] The switch cabinet contact wireless electrical testing device provided in this embodiment

[0053] In actual use, the contact wireless electric test device of the switch cabinet is sent to the cable joint of the switch cabinet through the insulating rod tool, and the mounting part 2 is set on the bolt head end of the bolt of the cable joint of the switch cabinet. The contact wireless electric test device of the switch cabinet and the bolt head end are relatively fixed by means of the anti-slip protrusion 231, and the metal middle piece 3 of the contact wireless electric test device of the switch cabinet is firmly adsorbed on the bolt of the cable joint of the switch cabinet. The bolt is connected to the detection unit 11 through the metal middle piece 3. The detection unit 11 determines whether the bolt is charged by detecting the electric field strength. On the one hand, it can send an indication signal to the outside through the indication device 12, and on the other hand, it can transmit the charged indication signal to the outside through the wireless transmitting unit. The operation and maintenance personnel can judge whether the line is energized by whether the indicating device 12 is lit. Further, the operation and maintenance personnel can receive the indication signal through the cooperation between the external receiver and the wireless transmitting unit to know the charged state.

[0054] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A contact type wireless electric testing device for a switch cabinet, characterized in that: include: A main body component (1) is provided with a detection unit (11), a signal processing circuit and a wireless transmitting unit, wherein the output end of the detection unit (11) is electrically connected to the input end of the signal processing circuit, and the output end of the signal processing circuit is electrically connected to the input end of the wireless transmitting unit; A mounting member (2) is arranged on one side of the main body component (1), the mounting member (2) is provided with a first through hole (21) extending in a first direction and connecting two sides of the mounting member (2), and an end of the first through hole (21) away from the main body component (1) is used to accommodate an electrical test object; A metal intermediate piece (3), comprising a fixing portion (31) and a protruding portion (32) fixedly arranged on the fixing portion (31), wherein the fixing portion (31) is arranged on the main body component (1), and the protruding portion (32) extends into the first through hole (21) from one end of the first through hole (21) close to the main body component (1), and the detection unit (11) is electrically connected to the metal intermediate piece (3).

2. The contact wireless electrical testing device for switch cabinet according to claim 1, characterized in that: The mounting member (2) comprises: An annular bottom plate (22) fixedly connected to the main body component (1); A peripheral wall (23) is fixedly arranged on a side of the annular bottom plate (22) away from the main body component (1); the peripheral wall (23) and the annular bottom plate (22) are coaxially arranged; the inner cavity of the annular bottom plate (22) is connected with the inner cavity of the peripheral wall (23) to form the first through hole (21); the inner cavity of the peripheral wall (23) is used to accommodate the electrical test object; the protrusion (32) passes through the inner cavity of the annular bottom plate (22) and extends into the inner cavity of the peripheral wall (23).

3. The contact wireless electrical testing device for switch cabinet according to claim 2, characterized in that: A plurality of anti-slip protrusions (231) are arranged at intervals along the circumference of the peripheral wall (23) on the inner side of the peripheral wall (23), and the anti-slip protrusions (231) all extend along the first direction.

4. The contact wireless electrical testing device for switch cabinet according to claim 3 is characterized in that: The anti-slip protrusion (231) can be elastically deformed.

5. The contact wireless electrical testing device for switch cabinet according to claim 3 is characterized in that: The minimum diameter of the inner circle of the peripheral wall (23) is greater than the diameter of the inner circle of the annular bottom plate (22).

6. The contact wireless electrical testing device for switch cabinet according to claim 2, characterized in that: The fixing portion (31) is sandwiched between the annular bottom plate (22) and the main body component (1).

7. The contact wireless electrical testing device for switch cabinet according to claim 6, characterized in that: The fixing portion (31) and the raised portion (32) are coaxially arranged, the outer diameter of the fixing portion (31) is larger than the outer diameter of the raised portion (32), a receiving groove (221) is arranged on one side of the annular bottom plate (22) facing the main body component (1), and the outer edge of the fixing portion (31) is arranged in the receiving groove (221).

8. The contact wireless electrical testing device for switch cabinet according to claim 1, characterized in that: The main body component (1) is also provided with an indication device (12), the input end of the indication device (12) is electrically connected to the output end of the signal processing circuit, and a plurality of the indication devices (12) are arranged at intervals along the circumference of the main body component (1).

9. The contact wireless electrical testing device for switch cabinet according to claim 2, characterized in that: It also includes connecting screws (4), and the annular bottom plate (22) is provided with a plurality of connecting holes (222) arranged at intervals along the circumference of the first through hole (21), and the connecting holes (222) all extend along the first direction. The connecting screws (4) pass through the connecting holes (222) to connect the annular bottom plate (22) to the main body component (1).

10. The contact type wireless electric testing device for switch cabinet according to claim 9, characterized in that: The peripheral wall (23) is provided with avoidance holes (232) corresponding one to one with the connection holes (222), and the avoidance holes (232) are coaxially arranged with the corresponding connection holes (222).

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