Portable bus duct withstand voltage testing device

Abstract

The utility model discloses a portable bus duct withstand voltage test device, which relates to the bus duct test field and comprises a withstand voltage tester, a quick-change test connector and a bus duct, the quick-change test connector and the withstand voltage tester are electrically connected with each other, and the outer end of the quick-change test connector can be installed in the bus duct in a plug-in fit manner for wiring; a plurality of test claw heads are fixedly mounted at the outer end of the quick-change test connector, contact copper sheets and springs are arranged on the test claw heads, a plurality of bus duct conductors are arranged in the bus duct, the test claw heads are inserted into the bus duct conductors in a one-to-one correspondence manner, and the contact copper sheets are propped against the bus duct conductors through the springs to form firm connection; compared with the prior art, the beneficial effects of the utility model are that the portable design can facilitate the implementation operation of a withstand voltage test; the design of the quick connector can realize plug and play, so that the use steps and related training are simplified; and the fool-proof design does not need to manually butt the conductors one by one, so that the problem of wrong connection of the conductors is avoided.

Description

Technical Field

[0001] The utility model relates to the field of bus duct testing, in particular to a portable bus duct withstand voltage testing device. Background Art

[0002] Bus duct is a closed metal device composed of copper and aluminum busbars, which is used to distribute high power to various components of the distributed system. It has increasingly replaced wires and cables in indoor low-voltage power transmission trunk line projects. In Guangzhou, Guangdong, my country, more than 90% of the main lines leading to the distribution rooms of buildings with more than 12 floors use bus ducts; bus ducts are used from 630KVA transformers to distribution cabinets.

[0003] The electrical performance of the bus duct conductor is a key indicator of the bus duct quality. The bus duct needs to be tested for phase-to-phase current, voltage, and resistance before it leaves the factory. By applying a certain voltage between the two electrodes, the resistance value of the insulating material is measured; the protection function of the bus duct is turned off; the size parameters of the short-circuit current and the short-circuit time parameters are determined, and the equipment is powered on regularly with a protective grounding resistor to observe the response of the equipment. The above tests are performed to ensure that the bus duct is of qualified quality.

[0004] In the past, the method of measuring the quality of bus duct was to use an electric meter to perform a withstand voltage test on every two phases of the bus duct. However, this test method requires manually clamping the positive and negative claws of the electric meter on two phases each time. The entire test process is cumbersome and the test results are easily affected by manual work. It is difficult to avoid data errors caused by plugging the wrong phase. In addition, the manual operation makes the hands too close to the exposed conductor, which is prone to accidental electric shock. Therefore, a bus duct detection device with anti-fool function and protective measures is needed. Utility Model Content

[0005] In order to overcome the above-mentioned shortcomings, the utility model provides a technical solution that can solve the above-mentioned problems.

[0006] A portable bus duct withstand voltage test device comprises a withstand voltage tester, a quick-change test connector and a bus duct, wherein the quick-change test connector and the withstand voltage tester are electrically connected to each other, and the outer end of the quick-change test connector can be plugged and installed in the bus duct for wiring;

[0007] A plurality of test claws are fixedly mounted on the outer end of the quick-change test connector, contact copper sheets and springs are arranged on the test claws, a plurality of bus duct conductors are arranged in the bus duct, the test claws are plugged into the bus duct conductors one by one, and the contact copper sheets are abutted against the bus duct conductors through the springs to form a firm connection.

[0008] Furthermore: an AC output port is arranged on the side of the withstand voltage tester, a cable is connected between the AC output port and the quick-change test connector, and the wires in the cable are electrically connected to the contact copper sheets in a one-to-one correspondence.

[0009] Further: the quick-change test connector includes an insulating shell and several contact conductors, the insulating shell includes an insulating upper shell and an insulating lower shell, the insulating upper shell and the insulating lower shell are symmetrically arranged with respect to each other, and several contact conductors are fixedly installed between the insulating upper shell and the insulating lower shell. The contact conductors are electrically connected to the withstand voltage tester through cables, and the contact copper sheets are electrically connected and installed on the contact conductors.

[0010] Furthermore: a plurality of conductor slots are formed in the insulating upper shell and the insulating lower shell, and a plurality of contact conductors are installed in the conductor slots with one-to-one corresponding clearances.

[0011] Furthermore: the insulating upper shell and the insulating lower shell are assembled and fixed by bolts.

[0012] Furthermore: the cable adopts a five-phase cable, and five contact copper sheets and five bus duct conductors are provided.

[0013] Furthermore: the contact copper sheet is bent into a V-shaped structure, the contact copper sheet is fixedly mounted on the test claw, the spring is abutted against the V-shaped structure of the contact copper sheet, and the contact copper sheet drives the V-shaped structure to elastically reset through the spring and abuts against the bus duct conductor to form a firm connection.

[0014] Compared with the prior art, the beneficial effects of the utility model are: the portable design can facilitate the implementation of the withstand voltage test; the quick-connect connector design can achieve plug-and-play, simplifying the use steps and related training; the fool-proof design does not require manual connection of conductors one by one, avoiding the problem of wrong connection of conductors.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 This is a schematic diagram of the structure of the utility model before being inserted into the bus duct;

[0018] Figure 2This is a schematic diagram of the structure of the utility model after being inserted into the bus duct;

[0019] Figure 3 It is a schematic diagram of the exploded structure of the quick-change test connector;

[0020] Figure 4 It is a schematic diagram of the structure of the insulating lower shell;

[0021] Figure 5 It is a schematic diagram of the structure when the quick-change test connector is inserted into the bus duct.

[0022] As shown in the figure: 1. Hi-pot tester; 2. Quick-change test connector; 3. Bus duct; 4. Test claw; 5. Contact copper sheet; 6. Spring; 7. Bus duct conductor; 8. AC outlet; 9. Cable; 10. Insulating shell; 11. Contact conductor; 12. Insulating upper shell; 13. Insulating lower shell; 14. Conductor slot. DETAILED DESCRIPTION

[0023] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0024] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0025] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0026] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] like Figure 1-5 As shown, the portable bus duct 3 withstand voltage test device of the utility model comprises a withstand voltage tester 1, a quick-change test connector 2 and a bus duct 3, the quick-change test connector 2 and the withstand voltage tester 1 are electrically connected to each other, and the outer end of the quick-change test connector 2 can be plugged and installed in the bus duct 3 for wiring;

[0029] The outer end of the quick-change test connector 2 is fixedly mounted with a plurality of test claws 4, on which contact copper sheets 5 and springs 6 are arranged, and a plurality of bus duct conductors 7 are arranged in the bus duct 3, and the test claws 4 are plugged into the bus duct conductors 7 one by one, and the contact copper sheets 5 are abutted against the bus duct conductors 7 through the springs 6 to form a firm connection;

[0030] The principle is: a fool-proof design is implemented by using a quick-change test connector 2 to avoid errors in the withstand voltage test caused by wrong insertion. At the same time, a contact copper sheet 5 and a spring 6 are arranged on the test claw head 4. When plugged into the bus duct 3, a firm connection can be achieved through the abutment of the spring 6, and poor contact will not occur. At the same time, it can avoid the method of manually clamping the positive and negative claws of the meter on two phases each time for testing, which is safer.

[0031] Furthermore: an AC output port 8 is provided on the side of the withstand voltage tester 1, a cable 9 is connected between the AC output port 8 and the quick-change test connector 2, and the wires in the cable 9 are electrically connected to the contact copper sheet 5 one by one; it is convenient to carry the withstand voltage tester 1 and the quick-change test connector 2.

[0032] Further: the quick-change test connector 2 includes an insulating shell 10 and several contact conductors 11, the insulating shell 10 includes an insulating upper shell 12 and an insulating lower shell 13, the insulating upper shell 12 and the insulating lower shell 13 are symmetrically arranged with respect to each other, and several contact conductors 11 are fixedly installed between the insulating upper shell 12 and the insulating lower shell 13, the contact conductor 11 is electrically connected to the voltage withstand tester 1 through the cable 9, and the contact copper sheet 5 is electrically connected and installed on the contact conductor 11; after the contact conductor 11 is installed, the insulating upper shell 12 and the insulating lower shell 13 can be assembled with each other to make the electrical connection more stable and prevent poor contact.

[0033] Furthermore: a plurality of conductor slots 14 are formed in the insulating upper shell 12 and the insulating lower shell 13, and a plurality of contact conductors 11 are installed in the conductor slots 14 with corresponding clearances one by one; so that the five phases can be insulated and separated from each other during the withstand voltage test, avoiding test errors caused by contact between two phases.

[0034] Furthermore, the insulating upper shell 12 and the insulating lower shell 13 are assembled and fixed by bolts, so that the installation between the insulating upper shell 12 and the insulating lower shell 13 is more stable and convenient for disassembly and assembly.

[0035] Furthermore, the cable 9 is a five-phase cable 9 , and the contact copper sheets 5 and the bus duct conductors 7 are both provided with five; the withstand voltage test of the bus duct 3 can be realized by using a five-phase plug-in method.

[0036] Furthermore: the contact copper sheet 5 is bent into a V-shaped structure, the contact copper sheet 5 is fixedly mounted on the test claw 4, and the spring 6 is abutted against the V-shaped structure of the contact copper sheet 5. The contact copper sheet 5 drives the V-shaped structure to elastically reset through the spring 6 and abuts against the bus duct conductor 7 to form a firm connection; the V-shaped structure of the contact copper sheet 5 itself has a certain elasticity, and under the premise of cooperating with the spring 6, the quick-change test connector 2 can be more stably plugged into the bus duct 3 for testing.

[0037] The utility model comprises a withstand voltage tester 1 and a quick-change test connector 2. The quick-change test connector 2 is connected from the AC output port 8 of the withstand voltage tester 1 through a cable 9. The outer end of the quick-change test connector 2 can be connected to a bus duct 3 for withstand voltage detection. The quick-change test connector 2 comprises an insulating shell 10 and a contact conductor 11. A copper bar is formed by five contact conductors 11 for wiring. The insulating shell 10 comprises an insulating upper shell 12 and an insulating lower shell 13. Five conductor card slots 14 are provided in the insulating shell 10 for placing the contact conductors 1 ... The five-phase cable 9 is connected to the five contact conductors 11 of each of the five items A, B, C, N, and PE in the insulating housing 10 in sequence, and then the insulating upper shell 12 and the insulating lower shell 13 are locked up and down by bolts to form a quick-change test connector 2; each of the five test claws 4 has a spring 6 and a contact copper sheet 5, and the spring 6 serves as a support for the contact copper sheet 5. When the bus duct conductor 7 is inserted into the quick-change test connector 2, the contact copper sheet 5 is pushed by the spring 6, so that the contact copper sheet 5 and the test claw 4 clamp the bus duct conductor 7 to achieve a firm connection between the fixed bus duct 3 and the quick-change test connector 2;

[0038] The utility model can realize the testing of the total grounding resistance of the four-phase conductors A, B, C and N in the bus duct 3 by connecting the quick-change test connector 2 with the bus duct 3 .

[0039] The advantages of the utility model are:

[0040] 1. Portable design: You only need to carry the withstand voltage tester and the quick-change test connector 2 to perform the withstand voltage test on the bus duct 3 in any power supply environment;

[0041] 2. Quick-connect connector design: It can be plug-and-play, easy to use, and also simplifies the use steps and related training;

[0042] 3. Foolproof design: The insulating housing 10 is designed to realize foolproof design, so that the quick-change connector can be plug-and-play, without the need to manually connect the conductors one by one, thus avoiding the problem of errors in the withstand voltage test caused by wrong connection of conductors;

[0043] 4. Insulation performance inspection: Withstand voltage test is a non-destructive testing technology, which can inspect whether the insulation performance of bus duct 3 meets the requirements under transient high voltage environment;

[0044] 5. Discover manufacturing defects: The withstand voltage test can reveal problems such as insufficient electrical clearance and insufficient creepage distance that may exist in the manufacturing process;

[0045] 6. Ensure product stability: By placing the device under test in a high voltage environment for a certain period of time, it can be ensured that the insulation capacity of the product has sufficient stability;

[0046] 7. Wide application: The withstand voltage tester 1 is widely used in electrical manufacturing departments, power operation departments, scientific research institutions and colleges and universities to conduct insulation strength tests under specified voltages on various electrical products, electrical components, insulating materials, etc.

[0047] 8. Measuring overvoltage capability: The withstand voltage test can measure the overvoltage capability of the bus duct 3, test the insulation performance and defects of the insulation material, and determine whether the insulation performance meets the electrical performance requirements of use.

[0048] The portable bus duct 3 withstand voltage test device of the utility model can be used in the following scenarios:

[0049] 1. Before the bus duct 3 product leaves the factory: Each section of the bus duct 3 unit needs to undergo a power frequency withstand voltage test before leaving the factory; this is to ensure the grounding performance of the bus duct 3 and prevent electrical failures during use.

[0050] 2. Before installing the bus duct 3: Before installing the bus duct 3, it is necessary to check the insulation resistance value of each section of the bus duct 3 unit to ensure the safety and reliability of the bus duct 3.

[0051] 3. Bus duct 3 maintenance: In some cases, the bus duct 3 needs to be removed for maintenance to perform additional voltage withstand tests to detect resistance performance.

[0052] 4. Special working conditions: If the bus duct 3 needs to be used under special working conditions, such as when the ambient temperature, humidity, altitude, etc. are beyond the normal range, additional electrical withstand voltage tests may be required.

[0053] This embodiment does not impose any formal restrictions on the shape, material, structure, etc. of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model are within the protection scope of the technical solution of the utility model.

Claims

1. A portable bus duct withstand voltage test device, comprising a withstand voltage tester, a quick-change test connector and a bus duct, wherein the quick-change test connector and the withstand voltage tester are electrically connected to each other, and the outer end of the quick-change test connector can be plugged and installed in the bus duct for wiring; the characteristics are: A plurality of test claws are fixedly mounted on the outer end of the quick-change test connector, contact copper sheets and springs are arranged on the test claws, a plurality of bus duct conductors are arranged in the bus duct, the test claws are plugged into the bus duct conductors one by one, and the contact copper sheets are abutted against the bus duct conductors through the springs to form a firm connection.

2. The portable bus duct withstand voltage test device according to claim 1 is characterized in that: An AC output port is arranged on the side of the withstand voltage tester, a cable is connected between the AC output port and the quick-change test connector, and the conductors in the cable are electrically connected to the contact copper sheets in a one-to-one correspondence.

3. The portable bus duct withstand voltage test device according to any one of claims 1 or 2, characterized in that: The quick-change test connector includes an insulating shell and a plurality of contact conductors, the insulating shell includes an insulating upper shell and an insulating lower shell, the insulating upper shell and the insulating lower shell are symmetrically arranged with respect to each other, the plurality of contact conductors are fixedly installed between the insulating upper shell and the insulating lower shell, the contact conductors are electrically connected to the withstand voltage tester through cables, and the contact copper sheets are electrically connected and installed on the contact conductors.

4. The portable bus duct withstand voltage test device according to claim 3 is characterized in that: A plurality of conductor slots are formed in the insulating upper shell and the insulating lower shell, and a plurality of contact conductors are installed in the conductor slots with one-to-one corresponding clearances.

5. The portable bus duct withstand voltage test device according to claim 3 is characterized in that: The insulating upper shell and the insulating lower shell are assembled and fixed by bolts.

6. The portable bus duct withstand voltage test device according to claim 2, characterized in that: The cable adopts a five-phase cable, and there are five contact copper sheets and five bus duct conductors.

7. The portable bus duct withstand voltage test device according to claim 1, characterized in that: The contact copper sheet is bent into a V-shaped structure, which is fixedly mounted on the test claw, and a spring is abutted in the V-shaped structure of the contact copper sheet. The contact copper sheet drives the V-shaped structure to elastically reset through the spring and abuts against the busbar conductor to form a firm connection.

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