Power circuit test device

Abstract

The present invention provides a power circuit continuity testing device, which relates to the technical field of power circuit continuity testing devices, including a measuring plug, a detection body and an electrical measuring mechanism; in actual operation, a measuring plug corresponding to a socket to be tested is selected, and the measuring plug can be directly inserted into the jack of the socket to be tested. The electrical measuring mechanism is electrically connected to the measuring plug through the detection body, and the electrical measuring mechanism can be used to directly detect the smooth flow of the circuit in the socket to be tested. When it is detected that the circuit in the socket is blocked, the electrical measuring mechanism can be used to further judge the missing information of the live wire in the circuit in the socket to be tested. The electrical measuring mechanism can be used to check whether the circuit of the socket to be tested is smooth, and whether the live wire is missing when the circuit is blocked, thereby meeting the electrical testing requirements for the socket to be tested and alleviating the technical problems in the prior art that the existing electrical tester cannot meet the electrical testing requirements of various socket types and there are safety hazards when the socket is removed for electrical testing.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply continuity testing devices, and in particular to a power supply loop continuity testing device. Background Art

[0002] In the prior art, an electrician's tester for a socket can be an electrician's tester or a multimeter. The electrician's tester can be used to determine the neutral wire and live wire in the socket's internal circuit. It can also be used to determine whether there is a leakage in the appliance, whether any wires in the circuit are in phase or out of phase, and determine the positive and negative poles of direct current.

[0003] However, since there are many types of sockets in the prior art, among which sockets generally include two-hole, three-hole and industrial sockets, and the socket holes are generally narrow, the existing electrical testers cannot meet the requirements of various socket types for electrical testing, and the electric pen and multimeter cannot be directly inserted into the socket hole. Therefore, the socket shell can only be removed for measurement. Removing the socket shell will cause the wires to be directly exposed to the outside, and there is a safety hazard of electric shock caused by misoperation. Summary of the Invention

[0004] The purpose of the present invention is to provide a power circuit testing device to alleviate the technical problems in the prior art that the existing electrical tester cannot meet the requirements of various socket types and there are safety hazards when removing the socket for testing.

[0005] The present invention provides a power circuit continuity test device, comprising: a measuring plug, a detection body and an electrical measurement mechanism;

[0006] The measuring plug is detachably connected to the detection body, and the measuring plug is used to be connected to the socket to be detected; the electrical measuring mechanism is located inside the detection body, and the electrical measuring mechanism is electrically connected to the measuring plug through the detection body, and the electrical measuring mechanism is used to detect whether the circuit in the socket to be detected is unobstructed, so as to determine whether the live wire in the circuit in the socket to be detected is missing.

[0007] In a preferred embodiment of the present invention, the electrical measurement mechanism includes a first detection mechanism and a second detection mechanism;

[0008] The first detection mechanism and the second detection mechanism are both located inside the detection body. The first detection mechanism is electrically connected to the measuring plug through the detection body. The first detection mechanism is used to detect whether the circuit in the socket to be detected is unobstructed. The second detection mechanism is electrically connected to the measuring plug through the first detection mechanism. The second detection mechanism is used to determine whether the live wire in the circuit in the socket to be detected is missing.

[0009] In a preferred embodiment of the present invention, the measuring plug includes a first plug, a connecting wire and a second plug;

[0010] The first plug is connected to the second plug via the connecting line, the detection body includes a socket, the first plug is used to connect to the socket of the detection body, and the second plug is used to connect to the socket to be detected;

[0011] The first plug and the socket of the detection body are male and female plugs.

[0012] In a preferred embodiment of the present invention, the second plug is set corresponding to the model of the socket of the socket to be detected, and the second plug includes a 16A socket triangulation plug, a 10A socket triangulation plug or a 10A socket two-pin measurement plug.

[0013] In a preferred embodiment of the present invention, the detection body further includes an insulating shell;

[0014] A plurality of accommodating grooves are provided in the insulating shell, and the first detection mechanism and the second detection mechanism are respectively accommodated in the accommodating grooves in the insulating shell. The socket is located at one end of the insulating shell and is electrically connected to the first detection mechanism.

[0015] In a preferred embodiment of the present invention, the first detection mechanism includes an indicator light and a connection circuit;

[0016] The socket has a live wire connection end and a neutral wire connection end, the connection circuit is respectively connected to the live wire connection end and the neutral wire connection end of the socket, the indicator light is located on the connection circuit, and the indicator light is used to detect the connection circuit electrical information of the connection circuit.

[0017] In a preferred embodiment of the present invention, the second detection mechanism includes a sensing mechanism and a neon bulb;

[0018] The neon bulb is electrically connected to the connection circuit, the sensing mechanism is connected to the neon bulb, a groove is provided on the insulating shell, the sensing mechanism is located in the groove, the sensing mechanism is used to contact the detection personnel to make the neon bulb form a loop, and the neon bulb is used to determine the missing live wire information in the loop in the socket to be detected.

[0019] In a preferred embodiment of the present invention, a transfer switch is further included;

[0020] The conversion switch is located between the connection loop and the neon bulb, the conversion switch is electrically connected to the connection loop, and the neon bulb is electrically connected to the live wire connection end and the neutral wire connection end of the connection loop through the conversion switch.

[0021] In a preferred embodiment of the present invention, the switching switch includes a rotating disk and a rotating knob;

[0022] The rotating disk is provided with a first connection end and a second connection end, the first connection end is electrically connected to the live wire connection end, and the second connection end is electrically connected to the neutral wire connection end. The rotating knob is used to rotate relative to the rotating disk to electrically connect the live wire connection end and the neutral wire connection end to the neon bulb respectively through the rotating knob to determine whether the live wire or neutral wire is missing in the circuit of the socket to be detected.

[0023] In a preferred embodiment of the present invention, the insulating shell is a transparent shell.

[0024] In a preferred embodiment of the present invention, both the first plug and the socket are waterproof plugs.

[0025] The present invention provides a power circuit continuity testing device, comprising: a measuring plug, a detection body and an electrical measuring mechanism; the measuring plug is detachably connected to the detection body, and the electrical measuring mechanism is located inside the detection body. During actual operation, a measuring plug corresponding to the socket to be tested is selected, and the measuring plug can be directly inserted into the jack of the socket to be tested. The electrical measuring mechanism is electrically connected to the measuring plug through the detection body, and the electrical measuring mechanism can be used to directly detect the circuit continuity information in the socket to be tested. When it is detected that the circuit in the socket is blocked, the electrical measuring mechanism can be used to further judge the missing information of the live wire in the circuit in the socket to be tested. The electrical measuring mechanism can be used to check the circuit continuity of the socket to be tested, and whether the live wire is missing when the circuit is blocked, thereby meeting the electrical testing requirements for the socket to be tested and alleviating the technical problems in the prior art that the existing electrical testers cannot meet the electrical testing requirements for various socket types and that there are safety hazards when the sockets are removed for electrical testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 A schematic diagram of the overall structure of a power circuit continuity test device provided by an embodiment of the present invention;

[0028] Figure 2 A schematic structural diagram of a detection body of a power circuit continuity test device provided by an embodiment of the present invention;

[0029] Figure 3 A schematic structural diagram of a triangulation plug in the power circuit continuity test device provided in an embodiment of the present invention;

[0030] Figure 4The measuring plug of the power circuit continuity test device provided in the embodiment of the present invention is a schematic structural diagram of a two-pin measuring plug;

[0031] Figure 5 A schematic diagram of the circuit structure of a power supply circuit continuity test device provided in an embodiment of the present invention.

[0032] Icons: 100-measuring plug; 101-first plug; 102-connecting wire; 103-second plug; 200-detection body; 201-socket; 202-insulating shell; 300-first detection mechanism; 301-indicator light; 302-connecting circuit; 400-second detection mechanism; 401-sensing mechanism; 402-neon bulb; 403-conversion switch; 413-rotating disk; 423-rotating knob; 500-electricity measuring mechanism. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] like Figure 1-Figure 5 As shown, this embodiment provides a power circuit continuity testing device, comprising: a measuring plug 100, a testing body 200, and an electrical measurement mechanism; the measuring plug 100 is detachably connected to the testing body 200, and is used to connect to a socket to be tested; the electrical measurement mechanism is located inside the testing body 200, and is electrically connected to the measuring plug 100 through the testing body 200, and is used to detect whether the circuit in the socket to be tested is unobstructed, so as to determine whether the live wire in the circuit of the socket to be tested is missing.

[0035] It should be noted that in the power circuit continuity testing device provided in this embodiment, the measuring plug 100 is a structure that is directly plugged into the socket to be tested, wherein the measuring plug 100 can have multiple formats. Specifically, the measuring plug 100 can be selected according to the format of the socket to be tested. For example, when a two-hole socket needs to be tested, a two-hole plug is selected to be plugged into the two-hole socket. Similarly, when a three-hole socket needs to be tested, a three-hole plug is selected to be plugged into the three-hole socket. This will not be described in detail here. After the corresponding measuring plug 100 is selected, it is connected to the testing body 200 through the measuring plug 100. The first detection mechanism 300 and the second detection mechanism 400 are located inside the testing body 200. When the measuring plug 100 is connected to the socket to be tested, the charged information of the socket to be tested will pass through the power measuring mechanism. The power measuring mechanism can be used as a power measuring device to detect the smooth circuit information of the socket to be tested, and when the circuit is not smooth, it can determine the missing information of the live wire in the circuit of the socket to be tested, thereby meeting the power testing requirements of the socket to be tested.

[0036] The present embodiment provides a power circuit testing device, comprising: a measuring plug 100, a testing body 200, a first testing mechanism 300, and a second testing mechanism 400; the measuring plug 100 is detachably connected to the testing body 200, and the first testing mechanism 300 and the second testing mechanism 400 are both located inside the testing body 200. In actual operation, the measuring plug 100 corresponding to the socket to be tested is selected, and the measuring plug 100 can be directly inserted into the socket of the socket to be tested. The first testing mechanism 300 is electrically connected to the measuring plug 100 through the testing body 200, and the first testing mechanism 300 can be used to directly detect the socket to be tested. Detect the information of whether the circuit in the socket is unblocked. When the first detection mechanism 300 detects that the circuit in the socket is blocked, the second detection mechanism 400 is electrically connected to the measuring plug 100 through the first detection mechanism 300, and the second detection mechanism 400 is used to judge the missing information of the live wire in the circuit of the socket to be tested. The first detection mechanism 300 and the second detection mechanism 400 can detect whether the circuit of the socket to be tested is unblocked, and whether the live wire is missing when the circuit is blocked, which meets the electrical testing requirements of the socket to be tested and alleviates the technical problems in the prior art that the existing electrical testers cannot meet the electrical testing of various socket types and there are safety hazards in removing the socket for electrical testing.

[0037] On the basis of the above embodiments, further, in a preferred embodiment of the present invention, the electrical measuring mechanism includes a first detection mechanism 300 and a second detection mechanism 400; the first detection mechanism 300 and the second detection mechanism 400 are both located inside the detection body 200, the first detection mechanism 300 is electrically connected to the measuring plug 100 through the detection body 200, and the first detection mechanism 300 is used to detect whether the circuit in the socket to be detected is unobstructed, and the second detection mechanism 400 is electrically connected to the measuring plug 100 through the first detection mechanism 300, and the second detection mechanism 400 is used to determine whether the live wire in the circuit in the socket to be detected is missing.

[0038] In this embodiment, when the measuring plug 100 is connected to the socket to be tested, the charged information of the socket to be tested will pass through the first detection mechanism 300 and the second detection mechanism 400 in sequence through the detection body, wherein the first detection mechanism 300 serves as a preliminary detection device. When the loop formed by the live wire and the neutral wire of the socket to be tested is unobstructed, the first detection mechanism 300 displays that there is no problem with the internal circuit of the socket to be tested, that is, the second detection mechanism 400 is no longer needed for detection; when the first detection mechanism 300 detects that the loop formed by the live wire and the neutral wire of the socket to be tested is not unobstructed, the second detection mechanism 400 is used to judge whether the live wire and the neutral wire of the socket to be tested are missing, so that it can be concluded whether the live wire or the neutral wire is missing inside the socket to be tested, thereby meeting the electrical testing requirements of the socket to be tested.

[0039] In a preferred embodiment of the present invention, the measuring plug 100 includes a first plug 101, a connecting line 102, and a second plug 103; the first plug 101 is connected to the second plug 103 via the connecting line 102, the detection body 200 includes a socket 201, the first plug 101 is used to connect to the socket 201 of the detection body 200, and the second plug 103 is used to connect to the socket to be tested; the first plug 101 and the socket 201 of the detection body 200 are male and female plugs.

[0040] In a preferred embodiment of the present invention, both the first plug 101 and the socket 201 are waterproof plugs.

[0041] In this embodiment, the connecting line 102 electrically connects the first plug 101 and the second plug 103. Regardless of the format of the measuring plug 100 selected, the structure of the first plug 101 is the same. The first plug 101 is docked with the socket 201 of the detection body 200, and the first plug 101 and the socket 201 can be docked using waterproof male and female plugs. When the first plug 101 and the socket 201 are docked, the integrity of the measuring plug 100 and the detection body 200 can be ensured. At the same time, the sealing performance of the male and female plugs can better ensure the use environment of the measuring plug 100 and the measurement body, making the design more complete.

[0042] In a preferred embodiment of the present invention, the second plug 103 is set corresponding to the model of the socket of the socket to be detected, and the second plug 103 includes a 16A socket triangulation measurement plug 100, a 10A socket triangulation measurement plug 100 or a 10A socket two-pin measurement plug 100.

[0043] Optionally, in this embodiment, the second plug 103 serves as a docking structure with the socket to be detected, wherein the second plug 103 is not limited to the 16A socket triangulation plug 100, the 10A socket triangulation plug 100 or the 10A socket two-pin measurement plug 100. The second plug 103 can be selected according to various forms of existing sockets to be detected. After the second plug 103 is electrically connected by using the connecting line 102, it can better transmit the electrical information of the socket to be detected to the inside of the detection body 200.

[0044] In a preferred embodiment of the present invention, the detection body 200 also includes an insulating shell 202; a plurality of accommodating grooves are provided in the insulating shell 202, and the first detection mechanism 300 and the second detection mechanism 400 are respectively accommodated in the accommodating grooves in the insulating shell 202, and the socket 201 is located at one end of the insulating shell 202, and the socket 201 is electrically connected to the first detection mechanism 300.

[0045] In a preferred embodiment of the present invention, the insulating shell 202 is a transparent shell.

[0046] In this embodiment, the structure of the insulating shell 202 can be in various forms, such as: a rectangular box body, a circular box body or a special box body. Preferably, the insulating shell 202 can adopt a rectangular box body. By adopting the insulating shell 202 with a rectangular box body, it is more convenient to place the first detection mechanism 300 and the second detection mechanism 400; in addition, the insulating shell 202 can adopt other structures, and it is only necessary to ensure the sealing of the insulating shell 202; since the first detection mechanism 300 and the second detection mechanism 400 can judge the information of the loop detection by turning on and off the light, and then by making the insulating shell 202 a transparent shell, it is more convenient to visually observe the detection results obtained by the first detection mechanism 300 and the second detection mechanism 400, making the design more perfect.

[0047] In a preferred embodiment of the present invention, the first detection mechanism 300 includes an indicator light 301 and a connection circuit 302; the socket 201 has a live wire connection end and a neutral wire connection end, and the connection circuit 302 is respectively connected to the live wire connection end and the neutral wire connection end of the socket 201, and the indicator light 301 is located on the connection circuit 302, and the indicator light 301 is used to detect the electrical information of the connection circuit 302.

[0048] In this embodiment, the indicator light 301 can adopt a 220V LED indicator light 301, that is, the indicator light 301 is connected to the live wire connection end and the neutral wire connection end of the socket 201 through the connecting circuit 302, and the live wire connection end of the socket 201 is electrically connected to the live wire of the socket to be tested through the measuring plug 100, and the neutral wire connection end of the socket 201 is electrically connected to the neutral wire of the socket to be tested through the measuring plug 100, that is, the indicator light 301 can receive the electrical information of the complete circuit of the socket to be tested. When the circuit of the socket to be tested is intact and there is no phase loss, the indicator light 301 is on, realizing various 220V socket circuit electrical testing and circuit continuity testing, and the use of the indicator light 301 can ensure that the measurement results are intuitive and eye-catching, the operation is simple, and the results can be quickly judged.

[0049] In a preferred embodiment of the present invention, the second detection mechanism 400 includes a sensing mechanism 401 and a neon bulb 402; the neon bulb 402 is electrically connected to the connection circuit 302, the sensing mechanism 401 is connected to the neon bulb 402, a groove is provided on the insulating shell 202, the sensing mechanism 401 is located in the groove, the sensing mechanism 401 is used to contact the detection personnel so that the neon bulb 402 forms a loop, and the neon bulb 402 is used to determine the missing information of the live wire in the loop in the socket to be detected.

[0050] Optionally, the sensing mechanism 401 can be made of a metal component, the sensing component is electrically connected to the neon bulb 402, and the end of the sensing mechanism 401 away from the neon bulb 402 is in a short-circuit state, that is, when the indicator light 301 detects the circuit, the second detection mechanism 400 is in a short-circuit state as a whole, and the second detection mechanism 400 will not detect the circuit. Only when the first detection mechanism 300 detects that the circuit of the socket to be detected is not smooth, the operator touches the sensing mechanism 401 by hand, so that the second detection mechanism 400 forms a circuit with the ground, thereby enabling the neon bulb 402 to form a circuit, and using the opening of the neon bulb 402 to judge the lack of information of the live wire in the circuit of the socket to be detected; wherein, the sensing mechanism 401 can be made of white steel screws or metal screws, etc., which will not be repeated here.

[0051] In a preferred embodiment of the present invention, a transfer switch 403 is further included; the transfer switch 403 is located between the connection loop 302 and the neon bulb 402, the transfer switch 403 is electrically connected to the connection loop 302, and the neon bulb 402 is electrically connected to the live wire connection end and the neutral wire connection end of the connection loop 302 through the transfer switch 403.

[0052] In this embodiment, when the measuring plug 100 is inserted into the socket to be tested, if the internal circuit of the socket to be tested is connected to a 220V voltage, current flows through the indicator light 301, and the indicator light 301 will light up, indicating that the internal circuit of the socket to be tested is unblocked and has voltage. If the indicator light 301 is not lit, it indicates that the internal circuit of the socket to be tested is blocked, that is, the neutral wire or the live wire of the internal circuit of the socket to be tested is missing. At this time, the operator presses the sensing area with his hand. If there is a neon bulb 402, it will light up, and if there is no neon bulb 402, it will not light up. However, since it is impossible to determine which of the two phases of the internal circuit of the socket to be tested is the neutral wire and which is the live wire, a transfer switch 403 can be used to connect the two phases of the internal circuit of the socket to be tested separately. After measuring one phase, the transfer switch 403 is adjusted to measure the other phase. If both neon bulbs 402 are not lit, it indicates that there is no live wire in the circuit, that is, the live wire of the socket to be tested is missing. If the neon bulb 402 is lit when measuring one of the phases, it indicates that the socket to be tested has a live wire and the neutral wire is missing.

[0053] In a preferred embodiment of the present invention, the transfer switch 403 includes a rotating disk 413 and a rotating knob 423; the rotating disk 413 is provided with a first connection end and a second connection end, the first connection end is electrically connected to the live wire connection end, and the second connection end is electrically connected to the neutral wire connection end, and the rotating knob 423 is used to rotate relative to the rotating disk 413, so as to electrically connect the live wire connection end and the neutral wire connection end to the neon bulb 402 respectively through the rotating knob 423, so as to determine whether the live wire or neutral wire is missing in the circuit of the socket to be detected.

[0054] In this embodiment, the first connection end and the second connection end on the rotating disk 413 can be separately connected to the two phase lines of the socket to be tested, that is, when the rotating knob 423 is electrically connected to the first connection end of the rotating disk 413, the rotating knob 423 transmits the voltage information of one phase line of the socket to be tested to the neon bulb 402 position, and whether this phase line is energized can be determined by whether the neon bulb 402 is lit or not. Similarly, when the rotating knob 423 is electrically connected to the second connection end of the rotating disk 413, the rotating knob 423 transmits the voltage information of the other phase line of the socket to be tested to the neon bulb 402 position, and whether this phase line is energized can be determined by whether the neon bulb 402 is lit or not. By detecting the two phase lines of the socket to be tested separately, it can be determined whether the live wire or the neutral wire of the socket to be tested is missing, thereby realizing rapid detection of the internal circuit of the socket, and the measurement results are intuitive and eye-catching, meeting the electrical testing requirements of the socket to be tested, alleviating the problem that the existing electrical testers in the prior art cannot meet the electrical testing requirements of various socket types, and are suitable for promotion and application.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power circuit testing device, characterized in that: include: Measuring plug, detection body and electrical measuring mechanism; The measuring plug is detachably connected to the detection body and is used to connect to the socket to be tested, so that the measuring plug corresponding to the socket to be tested can be selected during actual operation. The electrical measuring mechanism is located inside the detection body and is electrically connected to the measuring plug through the detection body. The electrical measuring mechanism is used to detect whether the circuit in the socket to be tested is unobstructed, so as to determine whether the live wire in the circuit of the socket to be tested is missing. The electrical measurement mechanism includes a first detection mechanism and a second detection mechanism; The first detection mechanism and the second detection mechanism are both located inside the detection body. The first detection mechanism is electrically connected to the measuring plug through the detection body. The first detection mechanism is used to detect whether the circuit in the socket to be detected is unobstructed. The second detection mechanism is electrically connected to the measuring plug through the first detection mechanism. The second detection mechanism is used to determine whether the live wire in the circuit in the socket to be detected is missing. The detection body includes a socket, and the first detection mechanism includes an indicator light and a connection circuit; The socket has a live wire connection end and a neutral wire connection end, the connection circuit is connected to the live wire connection end and the neutral wire connection end of the socket respectively, and the indicator light is located on the connection circuit, and the indicator light is used to detect the connection circuit electrical information of the connection circuit; The second detection mechanism includes a sensing mechanism and a neon bulb; The neon bulb is electrically connected to the connection loop, and the sensing mechanism is connected to the neon bulb. The sensing mechanism is used to contact the detection personnel to form a loop with the neon bulb. The neon bulb is used to determine the missing live wire information in the loop of the socket to be detected; Also includes transfer switches; The conversion switch is located between the connection loop and the neon bulb, the conversion switch is electrically connected to the connection loop, and the neon bulb is electrically connected to the live wire connection end and the neutral wire connection end of the connection loop through the conversion switch.

2. The power circuit testing device according to claim 1, characterized in that: The measuring plug includes a first plug, a connecting line and a second plug; The first plug is connected to the second plug via the connecting line, the first plug is used to connect to the socket of the detection body, and the second plug is used to connect to the socket to be detected; The first plug and the socket of the detection body are male and female plugs.

3. The power circuit testing device according to claim 2, characterized in that: The second plug is set corresponding to the model of the socket of the socket to be detected, and the second plug includes a 16A socket triangulation measurement plug, a 10A socket triangulation measurement plug or a 10A socket two-pin measurement plug.

4. The power circuit testing device according to claim 3, characterized in that: The detection body further includes an insulating shell, which is a transparent shell; A plurality of accommodating grooves are provided in the insulating shell, and the first detection mechanism and the second detection mechanism are respectively accommodated in the accommodating grooves in the insulating shell. The socket is located at one end of the insulating shell and is electrically connected to the first detection mechanism.

5. The power circuit testing device according to claim 4, characterized in that: The insulating shell is provided with a groove, and the sensing mechanism is located in the groove.

6. The power circuit testing device according to claim 1, characterized in that: The transfer switch includes a rotating disk and a rotating knob; The rotating disk is provided with a first connection end and a second connection end, the first connection end is electrically connected to the live wire connection end, and the second connection end is electrically connected to the neutral wire connection end. The rotating knob is used to rotate relative to the rotating disk to electrically connect the live wire connection end and the neutral wire connection end to the neon bulb respectively through the rotating knob to determine whether the live wire or neutral wire is missing in the circuit of the socket to be detected.

7. The power circuit testing device according to any one of claims 2 to 5, characterized in that: The first plug and the socket are both waterproof plugs.

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