CN115480081A - Insulation resistance test wire and use method thereof - Google Patents

Abstract

The invention provides an insulation resistance test wire and a using method thereof, wherein the insulation resistance test wire comprises a test head, a measuring body, a soft wire and a plug, and the test head is provided with a plug hole; the first end of the measuring body is provided with a plug body matched with the plug hole, and the plug body is connected with the plug hole in a pluggable manner; the first end of the soft line is fixedly connected with the second end of the measuring body; the plug comprises an operation part and a conductive plug column arranged on the operation part, and the second end of the soft line is fixedly connected with the operation part. The insulation resistance test wire provided by the invention is simple and convenient to use, and the test head can be replaced according to actual use requirements, so that the test head can be effectively in contact connection with the measurement point of the tested electrical equipment, the accuracy of the measurement result is improved, high-altitude measurement operation is facilitated, the measurement safety is improved, and convenience is provided for field actual measurement work.

Description

Insulation resistance test wire and use method thereof

Technical Field

The invention relates to the technical field of insulation resistance testing, in particular to an insulation resistance testing wire and a using method thereof.

Background

The insulation resistance test wire is a necessary tool for measuring insulation resistance. The test head on the existing insulation resistance test wire is fixedly installed, and the shape and the structure of the test head are of a specific type, so that the test head cannot be replaced according to actual use requirements. However, in the actual measurement process, due to the difference in structure, mounting position, and the like of different electrical devices, the test head of this specific type does not necessarily meet the actual measurement requirement, so that the situation that the test head cannot be effectively contacted and connected with the measurement point of the electrical device to be measured occurs, and the accuracy of the measurement result is further affected.

Disclosure of Invention

The invention aims to provide an insulation resistance test wire which is convenient to use and improves the accuracy of a measurement result.

The second purpose of the invention is to provide a using method of the insulation resistance test wire.

The invention provides an insulation resistance test wire, comprising:

the test head is provided with an inserting hole;

the first end of the measuring body is provided with an inserting body matched with the inserting hole, and the inserting body is connected with the inserting hole in a pluggable manner;

the first end of the soft wire is fixedly connected with the second end of the measuring body;

the plug comprises an operation part and a conductive plug column arranged on the operation part, and the second end of the soft line is fixedly connected with the operation part.

According to the insulation resistance test wire provided by the invention, the soft wire comprises a conductive flexible wire and a first insulation layer wrapping the outer surface of the conductive flexible wire; the operation portion comprises a conductive wire core and a second insulating layer wrapped on the outer surface of the conductive wire core, the first end of the conductive wire core is fixedly connected with the conductive insertion column, and the second end of the conductive wire core is fixedly connected with the conductive flexible wire.

According to the insulation resistance test wire provided by the invention, the test head comprises the measuring needle head and the first connecting body, the measuring needle head is a truncated cone body with the cross section gradually increasing from the first end to the second end, the second end of the measuring needle head is connected with the first end of the first connecting body, and the second end of the first connecting body is provided with the plug hole; and a first insulating shell is arranged on the outer surface of the first connecting body.

According to the insulation resistance test wire provided by the invention, the test head comprises a measuring hook head and a second connector, the measuring hook head comprises a vertical section and a hook section which are connected with each other, the vertical section is connected with the first end of the second connector, and the second end of the second connector is provided with the plug hole; and a second insulating shell is arranged on the outer surface of the second connecting body.

According to the insulation resistance test wire provided by the invention, the test head comprises a first measuring clamp and a second measuring clamp which are matched with each other, the middle part of the first measuring clamp is rotatably connected with the middle part of the second measuring clamp through a connecting shaft, a first end of the first measuring clamp and a first end of the second measuring clamp are respectively provided with a metal clamp opening, and a second end of the second measuring clamp is provided with the inserting hole; a compression spring is connected between the first measuring clamp and the second measuring clamp and is positioned between the connecting shaft and the inserting hole; and third insulating layers are arranged on the outer surface of the first measuring clamp and the outer surface of the second measuring clamp.

According to the insulation resistance test wire provided by the invention, the measuring body comprises a protective body, a protective ring and a handheld body, the plug-in body is arranged at the first end of the protective body, the second end of the protective body is connected with the first end of the handheld body, the second end of the handheld body is fixedly connected with the first end of the soft wire, and the protective ring is arranged on the outer peripheral surface of the connection part between the protective body and the handheld body; and third insulating shells are arranged on the outer surfaces of the protection body and the handheld body, and the protection rings are insulating rings.

According to the insulation resistance test wire provided by the invention, the measuring body comprises a reinforcing body and a binding assembly, the inserting body is arranged at the first end of the reinforcing body, and the second end of the reinforcing body is fixedly connected with the first end of the soft line; a fourth insulating shell is arranged on the outer surface of the reinforcing body;

the binding assembly comprises a plurality of first binding bands and a plurality of second binding bands corresponding to the first binding bands one to one, and the first binding bands and the second binding bands are respectively arranged on two opposite sides of the reinforcing body; the first binding bands are sequentially arranged along the length direction of the reinforcing body at intervals, and the second binding bands are sequentially arranged along the length direction of the reinforcing body at intervals.

According to the insulation resistance test wire provided by the invention, the first binding band is provided with a plurality of clamping bulges, the second binding band is provided with a plurality of clamping holes matched with the clamping bulges, and the clamping bulges can be clamped in the corresponding clamping holes; the plurality of clamping protrusions are arranged at equal intervals along the length direction of the first binding band respectively, and the plurality of clamping holes are arranged at equal intervals along the length direction of the second binding band respectively.

According to the insulation resistance test wire provided by the invention, the plug is an L-shaped plug.

The invention also provides a use method of the insulation resistance test wire, which comprises the following steps:

before measurement, fully discharging the tested electrical equipment to the ground, and then checking to determine that the insulation resistance tester can normally work; the insulation resistance tester is provided with three jacks, wherein the three jacks are respectively an L-line jack, an E-line jack and a G-line jack;

selecting three test heads according to three preset measurement points on the tested electrical equipment, and correspondingly installing the three test heads on the measurement bodies of the three insulation resistance test lines;

correspondingly inserting plugs of the three insulation resistance testing wires into three jacks of the insulation resistance tester; the three insulation resistance test wires are respectively a first insulation resistance test wire inserted with the L wire jack, a second insulation resistance test wire inserted with the E wire jack and a third insulation resistance test wire inserted with the G wire jack;

connecting the test head of the second insulation resistance test wire and the test head of the third insulation resistance test wire with corresponding measurement points respectively;

starting the insulation resistance tester, and connecting a test head of a first insulation resistance test wire to a corresponding measurement point position when the measurement voltage of the insulation resistance tester reaches a preset voltage value;

respectively reading and recording the measured values of the insulation resistance at different moments by an insulation resistance tester;

and after the measurement is finished, the insulation resistance tester is closed, the electrical equipment to be tested is fully discharged to the ground, and the three insulation resistance test wires are removed.

The invention provides an insulation resistance test wire, which comprises a test head, a measuring body, a soft wire and a plug, wherein the test head is provided with a jack, and the first end of the measuring body is provided with a plug body matched with the jack, so that the plug body and the jack can be connected in a pluggable manner; the plug comprises an operation part and a conductive plug column arranged on the operation part, the first end of the soft wire is fixedly connected with the second end of the measuring body, and the second end of the soft wire is fixedly connected with the operation part. Therefore, the insulation resistance test wire provided by the invention is simple in structure and convenient to use, the detachable installation of the test head on the measuring body is realized through the pluggable connection mode between the plug-in hole of the test head and the plug-in body of the measuring body, so that the test head can be conveniently replaced according to actual measurement requirements, the test head can be more effectively connected and contacted with a measuring point of the tested electrical equipment, the accuracy of a measuring result is improved, the test head can be supported by the measuring body to carry out high-position measurement operation, the requirement of manual climbing operation through a bucket arm vehicle is avoided, the measurement safety is improved, the cost is reduced, and convenience is provided for field actual measurement operation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural diagram of an insulation resistance test line according to the present invention;

FIG. 2 is a schematic view of a first structure of a test head in an insulation resistance test line according to the present invention;

FIG. 3 is a schematic view of a second structure of a test head in the insulation resistance test line according to the present invention;

FIG. 4 is a schematic view of a third structure of a test head in the insulation resistance test line according to the present invention;

FIG. 5 is a schematic view of a first structure of a measuring body in the insulation resistance test line according to the present invention;

FIG. 6 is a schematic view of a second structure of a measuring body in the insulation resistance test line according to the present invention;

FIG. 7 is a schematic structural diagram of the electrical device under test in the present invention.

Description of reference numerals:

100: a measuring body; 101: an insertion body; 102: a protective body; 103: a guard ring; 104: a hand-held body; 105: reinforcing the body; 106: a first strap; 107: a second strap; 108: clamping the bulge; 109: clamping the hole;

200: a soft thread;

300: a plug; 301: an operation section; 302: a conductive plug-in post;

400: a test head; 401: inserting holes; 402: measuring a needle head; 403: a first connecting body; 404: measuring the hook head; 405: a second connector; 406: a first measuring clamp; 407: a second measuring clamp; 408: a connecting shaft; 409: a metal nip; 410: a compression spring;

500: and testing the electrical equipment.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be apparent that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Specific embodiments of the insulation resistance test wire of the present invention will be described below with reference to fig. 1 to 6.

The insulation resistance test wire of the embodiment of the invention comprises a measuring body 100, a soft wire 200, a plug 300 and a test head 400, wherein the test head 400 is provided with a plug hole 401. The first end of the measuring body 100 is provided with the plug body 101 matched with the plug hole 401, and the plug body 101 is connected with the plug hole 401 in a pluggable manner, so that the pluggable installation between the measuring body 100 and the test head 400 is realized. The plug 300 comprises an operation part 301 and a conductive plug 302 arranged on the operation part 301, wherein a first end of the soft wire 200 is fixedly connected with a second end of the measuring body 100, and a second end of the soft wire 200 is fixedly connected with the operation part 301.

The insulation resistance test wire of the embodiment of the invention needs to be matched with an insulation resistance tester for use. When measurement is carried out, the test head 400 is installed on the measuring body 100, the conductive plug column 302 of the plug 300 is plugged into the corresponding jack on the insulation resistance tester, and then the test head 400 is in point contact connection with the measurement point of the electrical equipment to be measured, so that the purpose of measuring the insulation resistance of the electrical equipment to be measured is achieved.

Therefore, the insulation resistance test wire provided by the embodiment of the invention has the advantages that the structure is simple, the use is convenient, the detachable installation of the test head 400 on the measuring body 100 is realized through the pluggable connection mode between the plug-in hole 401 of the test head 400 and the plug-in body 101 of the measuring body 100, so that the test head 400 can be replaced according to the actual measurement requirement, the test head 400 can be more effectively connected and contacted with the measurement point of the tested electrical equipment, the accuracy of the measurement result is improved, the test head 400 can be supported by the measuring body 100 to carry out high-position measurement operation, the requirement of manually carrying out the high-position operation through a bucket arm vehicle is avoided, the measurement safety is improved, the cost is reduced, and the convenience is provided for the actual measurement work on site.

In some embodiments of the present invention, the soft body wire 200 comprises a conductive cord and a first insulating layer wrapped around an outer surface of the conductive cord. The operation portion 301 comprises a conductive wire core and a second insulating layer wrapped on the outer surface of the conductive wire core, the first end of the conductive wire core is fixedly connected with the conductive insertion column 302, and the second end of the conductive wire core is fixedly connected with the conductive flexible wire, so that the purpose of conductive connection is achieved.

Specifically, the plug 300 may be an L-shaped plug, so as to be conveniently inserted into a plug hole of the insulation resistance tester.

Particularly, the plug hole 401 of the test head 400 adopts a banana jack, and the plug body 101 of the measuring body 100 adopts a banana plug body matched with the banana jack, so that reliable plug between the test head 400 and the measuring body 100 can be realized, and the test safety is further improved.

Further, according to different requirements of actual use, the test head 400 has the following three structural forms:

fig. 2 shows a first structural form of the test head, which includes a measuring needle 402 and a first connecting body 403, the measuring needle 402 is a truncated cone with a cross section gradually increasing from a first end to a second end, the second end of the measuring needle 402 is connected to the first end of the first connecting body 403, and the second end of the first connecting body 403 is provided with a plug hole 401 for plugging with the plug body 101 of the measuring body 100. The measuring needle 402 is made of conductive metal material with certain hardness, such as iron, copper or stainless steel, and is used for contact measurement with a measuring point of the electrical device to be measured. The first connecting body 403 is made of a conductive metal material with a certain hardness, such as iron, copper, or stainless steel, so as to achieve the purpose of conductive connection. A first insulating housing is disposed on an outer surface of the first connecting body 403, so as to achieve an insulating protection effect during use.

When the measuring point of the electrical device to be measured is in a hole structure, such as an insertion hole of an electrical device, the measuring head with the first structure form of this embodiment is used to insert the measuring needle 402 into the corresponding insertion hole, so that the measuring point can be in more sufficient contact with the measuring head, which is beneficial to improving the accuracy and stability of the test result.

Fig. 3 shows a second structural form of the test head, the test head includes a measurement hook head 404 and a second connecting body 405, the measurement hook head 404 includes a vertical section and a hook section connected to each other, the vertical section is connected to a first end of the second connecting body 405, and a second end of the second connecting body 405 is provided with an insertion hole 401 for inserting into the insertion body 101 of the measurement body 100. The measuring hook head 404 is made of a conductive metal material with a certain hardness, such as iron, copper or stainless steel, and is used for performing contact measurement with a measuring point of the electrical device to be measured. The second connector 405 is made of a conductive metal material with a certain hardness, such as iron, copper, or stainless steel, so as to achieve the purpose of conductive connection. A second insulating shell is arranged on the outer surface of the second connecting body 405, so that the effect of insulating protection is achieved during the use process.

When being surveyed electrical equipment's measuring point is the perpendicular hole isotructure of penetrability that has a take the altitude, like high-voltage electrical equipment current transformer for the power distribution station, voltage transformer's connecting plate etc. has the connecting hole on the connecting plate, then adopt the test head of the second structural style of this embodiment, will measure gib head 404 couple in the connecting hole of connecting plate, enable measuring point and test head more firm, abundant contact, thereby it provides convenience to measure for insulation resistance, help improving the accuracy and the stability of test result.

As shown in fig. 4, a third structural form of the test head includes a first measuring clamp 406 and a second measuring clamp 407 which are mutually matched, a middle portion of the first measuring clamp 406 is rotatably connected with a middle portion of the second measuring clamp 407 through a connecting shaft 408, a first end of the first measuring clamp 406 and a first end of the second measuring clamp 407 are respectively provided with a metal clamp opening 409, and a second end of the second measuring clamp 407 is provided with an inserting hole 401 for inserting with an inserting body 101 of a measuring body 100. A compression spring 410 is connected between the first measuring clamp 406 and the second measuring clamp 407, and the compression spring 410 is located at a position between the connecting shaft 408 and the insertion hole 401, thereby achieving a clamping operation between the first measuring clamp 406 and the second measuring clamp 407. Wherein, the metal clamping opening 409 of the first measuring clamp 406 and the second measuring clamp 407 is used for clamping contact connection with a measuring point of the tested electrical equipment. The first measuring clamp 406 and the second measuring clamp 407 are made of conductive metal materials with certain hardness, such as iron, copper or stainless steel, so as to achieve the purpose of conductive connection. Wherein, the outer surface of the first measuring clamp 406 and the outer surface of the second measuring clamp 407 are both provided with a third insulating layer, so as to achieve the effect of insulating protection during the use process.

When the measuring point of the electrical equipment to be measured has an obvious convex characteristic, such as a suspended cable head, the cable head is clamped by the metal clamping opening 409 of the first measuring clamp 406 and the second measuring clamp 407 through the third structural form of the measuring head of the embodiment, so that the stable connection between the measuring head and the measuring point is realized, and the safety of measurement and the accuracy of a result are improved.

Further, according to different requirements of actual use, the measuring body 100 has the following two structural forms:

as shown in fig. 5, a first structural form of the measuring body comprises a protective body 102, a protection ring 103 and a hand-held body 104, wherein a first end of the protective body 102 is provided with an insertion body 101, a second end of the protective body 102 is connected with a first end of the hand-held body 104, a second end of the hand-held body 104 is fixedly connected with a first end of a soft thread 200, and the protection ring 103 is arranged on an outer peripheral surface of a connection part between the protective body 102 and the hand-held body 104.

The plug-in body 101 is a cylinder, and the plug-in body 101 is made of a metal material which is conductive and has certain hardness, such as iron, copper or stainless steel, and is used for being plugged with the test head. The protective body 102 and the handheld body 104 are made of conductive metal materials with certain hardness, such as iron, copper or stainless steel, so as to achieve the purpose of conductive connection.

Wherein, the outer surface of the protection body 102 and the outer surface of the hand-held body 104 are both provided with a third insulation shell, and the protection ring 103 adopts an insulation ring, thereby playing the role of insulation protection in the using process.

From this, adopt the measuring body of a structural style, can carry out effective connection with the measuring point of test head and surveyed electrical equipment through handheld mode, not only convenient to use can support the test head moreover and measure the operation in certain altitude department to measurement security has been improved.

Fig. 6 shows a second construction of the measuring body, which comprises a reinforcing body 105 and a lashing assembly, wherein the first end of the reinforcing body 105 is provided with an insert body 101, and the second end of the reinforcing body 105 is fixedly connected with the first end of the soft line 200. The ligating assembly includes a plurality of first straps 106 and a plurality of second straps 107 one-to-one corresponding to the first straps 106, and the first straps 106 and the second straps 107 are respectively provided on opposite sides of the reinforcing body 105. The first binding bands 106 are sequentially spaced apart in the longitudinal direction of the reinforcing body 105, and the second binding bands 107 are sequentially spaced apart in the longitudinal direction of the reinforcing body 105.

The plug-in body 101 is a cylinder, and the plug-in body 101 is made of a conductive metal material with certain hardness, such as iron, copper or stainless steel, and is used for being plugged with a test head. The reinforcing body 105 is made of a conductive metal material with certain hardness, such as iron, copper or stainless steel, so as to achieve the purpose of conductive connection. Wherein, a fourth insulation casing is provided on the outer surface of the reinforcing body 105, thereby playing an insulation protection effect during the use process.

Specifically, the first strap 106 is provided with a plurality of fastening projections 108, the second strap 107 is provided with a plurality of fastening holes 109 adapted to the fastening projections 108, and the fastening projections 108 can be fastened in the corresponding fastening holes 109. The plurality of fastening projections 108 are provided at equal intervals in the longitudinal direction of first strap 106, and the plurality of fastening holes 109 are provided at equal intervals in the longitudinal direction of second strap 107. That is, in use, the first strap 106 and the second strap 107 are respectively wound around the insulating rod, and then the snap-fitting protrusions 108 on the first strap 106 are correspondingly snap-fitted into the snap-fitting holes 109 on the second strap 107, so that the secure connection between the first strap 106 and the second strap 107 is achieved, and further, the firm connection between the reinforcing body 105 and the insulating rod is achieved.

From this, adopt the measuring body of the second kind of structural style, can fix reinforcing body 105 ligature on appurtenance such as insulator spindle through first bandage 106 and second bandage 107 to can support the test head and carry out the altitude measurement operation, avoid the artifical demand of carrying out the operation of ascending a height through the bucket arm car, not only convenient to use has improved the measurement security, and the cost is reduced moreover, provides convenience for on-the-spot actual measurement work.

The embodiment of the invention also provides a use method of the insulation resistance test wire based on the embodiment, which specifically comprises the following steps:

before measurement, the tested electrical equipment is fully discharged to the ground, and then the insulation resistance tester is checked and determined to work normally. The insulation resistance tester is provided with three jacks, and the three jacks are respectively an L-line jack, an E-line jack and a G-line jack.

And correspondingly selecting three test heads according to three preset measurement points on the tested electrical equipment, and correspondingly installing the three test heads on the measurement bodies of the three insulation resistance test wires.

And correspondingly inserting the plugs of the three insulation resistance testing wires into the three jacks of the insulation resistance tester. The three insulation resistance test wires are respectively a first insulation resistance test wire spliced with the L wire jack, a second insulation resistance test wire connected with the E wire jack and a third insulation resistance test wire spliced with the G wire jack. The first insulation resistance test wire is used for being connected with an exposed conductor of a measuring phase of the tested electrical equipment. According to the actual measurement condition, the second insulation resistance test wire is used for being connected with a non-measurement phase of the tested electric equipment, the grounding wire or a metal shell of the tested electric equipment. The third insulation resistance test wire is a shielding wire, and according to the actual situation of the tested electric equipment, the tested electric equipment can be shielded through the third insulation resistance test wire. When the tested electrical equipment does not need to be shielded, a third insulation resistance test wire does not need to be connected.

And respectively connecting the test head of the second insulation resistance test wire and the test head of the third insulation resistance test wire with corresponding measurement points of the tested electrical equipment.

And starting the insulation resistance tester, and connecting the test head of the first insulation resistance test wire to the corresponding position of the measurement point to measure when the measurement voltage of the insulation resistance tester reaches a preset voltage value.

And respectively reading and recording the measured values of the insulation resistance at different moments by an insulation resistance tester.

And after the measurement is finished, the insulation resistance tester is closed, the electrical equipment to be tested is fully discharged to the ground, and the three insulation resistance test wires are removed.

According to the application method of the insulation resistance test wire, due to the adoption of the insulation resistance test wire, a proper test head can be selected for measurement according to the actual measurement requirement of the tested electrical equipment, a proper measurement body can be selected according to the height condition of a measurement point, the measurement body supports the test head for high-altitude measurement operation, the requirement of manual ascending operation through a bucket arm vehicle is avoided, the measurement safety is improved, the cost is reduced, and convenience is provided for the actual field measurement operation.

The following describes how to select the test head and the measuring body, taking the electrical device 500 under test as shown in fig. 7 as an example.

As shown in fig. 7, the measured electrical device 500 is a 220KV current transformer, and on the measured electrical device 500, a measurement point to be connected with the first insulation resistance test line is a point a, and a measurement point to be connected with the second insulation resistance test line is a point b. Since the electrical device under test 500 does not need to be subjected to a shielding process, a third insulation resistance test line does not need to be connected.

The point a is arranged on the connecting piece with a vertical through hole, so that the test head with the second structure form in the above embodiment can be selected, and the measuring hook head of the test head is hung in the through hole of the connecting piece. The position of the point a is higher, so that a measuring body in a second structural form can be selected, the test head is inserted into the measuring body, the measuring body is bound and fixed on the insulating rod through the binding assembly, and the measuring body is lifted through the insulating rod, so that the connection test of the test head at the point a is realized.

In which point b is located on the ground line close to the ground, so that the test head of the third configuration in the above embodiment can be selected to be clamped to the ground line by the first measuring clamp 406 and the second measuring clamp 407 of the test head. Because the position of the point b is lower, the measuring body in the first structural form can be selected, the test head is inserted into the measuring body, and then the measuring body is held by hands to realize the connection test of the test head at the point b.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. An insulation resistance test wire, comprising:

the test head is provided with an inserting hole;

the first end of the measuring body is provided with an inserting body matched with the inserting hole, and the inserting body is connected with the inserting hole in a pluggable manner;

the first end of the soft wire is fixedly connected with the second end of the measuring body;

the plug comprises an operation part and a conductive plug column arranged on the operation part, and the second end of the soft line is fixedly connected with the operation part.

2. The insulation resistance test wire according to claim 1, wherein the soft wire comprises a conductive cord and a first insulation layer wrapped around an outer surface of the conductive cord; the operation portion comprises a conductive wire core and a second insulating layer wrapped on the outer surface of the conductive wire core, the first end of the conductive wire core is fixedly connected with the conductive insertion column, and the second end of the conductive wire core is fixedly connected with the conductive flexible wire.

3. The insulation resistance test wire according to claim 1, wherein the test head comprises a measuring needle and a first connecting body, the measuring needle is a truncated cone with a cross section gradually increasing from a first end to a second end, the second end of the measuring needle is connected with the first end of the first connecting body, and the second end of the first connecting body is provided with the plug hole; and a first insulating shell is arranged on the outer surface of the first connecting body.

4. The insulation resistance test wire according to claim 1, wherein the test head comprises a measuring hook head and a second connector, the measuring hook head comprises a vertical section and a hook section which are connected with each other, the vertical section is connected with a first end of the second connector, and a second end of the second connector is provided with the insertion hole; and a second insulating shell is arranged on the outer surface of the second connecting body.

5. The insulation resistance test wire according to claim 1, wherein the test head comprises a first measuring clamp and a second measuring clamp which are matched with each other, the middle part of the first measuring clamp is rotatably connected with the middle part of the second measuring clamp through a connecting shaft, a metal clamp opening is respectively arranged at the first end of the first measuring clamp and the first end of the second measuring clamp, and the inserting hole is arranged at the second end of the second measuring clamp; a compression spring is connected between the first measuring clamp and the second measuring clamp and is positioned between the connecting shaft and the inserting hole; and third insulating layers are arranged on the outer surface of the first measuring clamp and the outer surface of the second measuring clamp.

6. The insulation resistance test wire according to any one of claims 1 to 5, wherein the measuring body comprises a protective body, a protective ring and a hand-held body, the insertion body is arranged at a first end of the protective body, a second end of the protective body is connected with a first end of the hand-held body, a second end of the hand-held body is fixedly connected with a first end of the soft wire, and the protective ring is arranged on an outer peripheral surface of a connection between the protective body and the hand-held body; and third insulating shells are arranged on the outer surfaces of the protection body and the handheld body, and the protection ring is an insulating ring.

7. The insulation resistance test wire according to any one of claims 1 to 5, wherein the measuring body comprises a reinforcing body and a binding assembly, a first end of the reinforcing body is provided with the plug-in body, and a second end of the reinforcing body is fixedly connected with a first end of the soft wire; a fourth insulating shell is arranged on the outer surface of the reinforcing body;

the binding assembly comprises a plurality of first binding bands and a plurality of second binding bands corresponding to the first binding bands one by one, and the first binding bands and the second binding bands are respectively arranged on two opposite sides of the reinforcing body; the first binding bands are sequentially arranged along the length direction of the reinforcing body at intervals, and the second binding bands are sequentially arranged along the length direction of the reinforcing body at intervals.

8. The insulation resistance test wire according to claim 7, wherein the first strap is provided with a plurality of clamping protrusions, the second strap is provided with a plurality of clamping holes matched with the clamping protrusions, and the clamping protrusions can be clamped in the corresponding clamping holes; the plurality of clamping protrusions are arranged at equal intervals along the length direction of the first binding band respectively, and the plurality of clamping holes are arranged at equal intervals along the length direction of the second binding band respectively.

9. The insulation resistance test wire according to any one of claims 1 to 5, wherein the plug is an L-shaped plug.

10. A method of using the insulation resistance test wire according to any one of claims 1 to 9, comprising:

before measurement, fully discharging the tested electrical equipment to the ground, and then checking to determine that the insulation resistance tester can normally work; the insulation resistance tester is provided with three jacks, wherein the three jacks are respectively an L-line jack, an E-line jack and a G-line jack;

selecting three test heads according to three preset measurement points on the tested electrical equipment, and correspondingly installing the three test heads on the measurement bodies of the three insulation resistance test lines;

correspondingly inserting plugs of the three insulation resistance testing wires into three jacks of the insulation resistance tester; the three insulation resistance test wires are respectively a first insulation resistance test wire inserted with the L wire jack, a second insulation resistance test wire inserted with the E wire jack and a third insulation resistance test wire inserted with the G wire jack;

connecting the test head of the second insulation resistance test wire and the test head of the third insulation resistance test wire with corresponding measurement points respectively;

starting the insulation resistance tester, and connecting a test head of a first insulation resistance test wire to a corresponding measurement point position when the measurement voltage of the insulation resistance tester reaches a preset voltage value;

respectively reading and recording the measured values of the insulation resistance at different moments through an insulation resistance tester;

and after the measurement is finished, the insulation resistance tester is closed, the electrical equipment to be tested is fully discharged to the ground, and the three insulation resistance test wires are removed.

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