Tool for testing combined mutual inductor on pole-mounted circuit breaker

Abstract

The utility model discloses a tool for testing a combined mutual inductor on a pole-mounted circuit breaker, which relates to the field of combined mutual inductor testing and comprises a copper conducting rod, a combined mutual inductor is sleeved on the outer side of the copper conducting rod, copper wiring terminals are arranged on two sides of the copper conducting rod through clamping components, and a copper cushion sleeve is arranged on one side of each copper wiring terminal. The two ends of the copper conducting rod are provided with test assemblies. According to the utility model, the testing assembly is arranged, and the secondary wiring cable and the primary testing cable are respectively connected with the copper conducting rod and the combined mutual inductor, so that the assembling, mounting and debugging time of workers can be reduced while testing is realized, the problem of low efficiency caused by mounting and debugging is avoided, and the testing device can be reused, has long service life and is convenient to use. And the phenomenon of waste of other elements after testing is avoided.

Description

Technical Field

[0001] The utility model relates to the field of combined transformer testing, and more specifically, to a tooling for testing combined transformers on pole-mounted circuit breakers. Background Technique

[0002] A combined transformer, also known as a combined type transformer, is a general term for current transformers and voltage transformers. It combines these two types of transformers and can measure electrical quantities such as current and voltage simultaneously, providing accurate and reliable current and voltage conversion for the power system and outputting standard electrical signals to facilitate data acquisition and processing by the monitoring system.

[0003] Currently, there are many types of combined transformers for outdoor pole-mounted circuit breakers, and their design parameter performances vary. In order to select higher-performance combined transformer products for application in outdoor pole-mounted circuit breaker products, transformer performance tests are carried out. In the prior art, when testing the performance of combined transformers, first, a complete outdoor pole-mounted circuit breaker is assembled. The pole-mounted circuit breaker includes the following parts and materials: a housing, a mechanism, a pole column, an arc extinguishing chamber, an insulating pull rod, an over-travel spring, an adjusting bolt, a main driving rod, an external closing and opening indication component, an energy storage component, and the installation and wiring part of secondary components. Secondly, the outdoor pole-mounted circuit breaker is debugged, and the test contents include secondary circuit test function test, mechanical running-in test, mechanical characteristic test, and mechanical indication circuit correctness test. Finally, the combined transformer and the pole-mounted circuit breaker switch equipment are placed on the platform for testing the transformer to test relevant performances.

[0004] However, the above test method is time-consuming and laborious in assembling and debugging the pole-mounted circuit breaker, increasing the test time of the combined transformer for outdoor pole-mounted circuit breakers. Large-scale testing will seriously affect the test efficiency. At the same time, the components other than the combined transformer cannot be used continuously after testing, resulting in serious waste in the production test link.

[0005] Regarding the problems in the related art, no effective solution has been proposed yet. Content of the Utility Model

[0006] (1) Technical Problems to be Solved

[0007] In view of the deficiencies of the prior art, the utility model provides a tooling for testing combined transformers on pole-mounted circuit breakers, which aims to reduce the assembly and installation and debugging time of workers, eliminate the problem of low efficiency caused by installation and debugging, and further solve the problems of affecting test efficiency and causing waste.

[0008] (2) Technical Solutions

[0009] To achieve the above purpose of reducing the assembly and installation and debugging time of workers and eliminating the problem of low efficiency caused by installation and debugging, the specific technical solutions adopted by the utility model are as follows:

[0010] A tooling for testing combined instrument transformers on pole-mounted circuit breakers, comprising a copper conducting rod, with a combined instrument transformer sleeved outside the copper conducting rod. Copper wiring terminals are arranged on both sides of the copper conducting rod through clamping components. A copper gasket sleeve is arranged on one side of the copper wiring terminal, and testing components are arranged at both ends of the copper conducting rod.

[0011] Furthermore, in order to facilitate the installation of the combined instrument transformer into the interior of the copper conducting rod, an installation hole is provided inside the combined instrument transformer, and a lead wire is arranged at the bottom end of the combined instrument transformer; the contact surface where the combined instrument transformer penetrates into the interior of the copper conducting rod is in contact with the contact surface of the copper gasket sleeve.

[0012] Furthermore, in order to fix the copper wiring terminal on both sides of the copper conducting rod under the action of a knob, reduce the assembly and installation debugging time of workers, and achieve the purpose of convenient operation and labor saving, the clamping component includes connection plates installed on both sides of the copper conducting rod, and the copper wiring terminal is installed at the top end of the connection plate. A jack is provided inside the connection plate, and a knob is arranged inside the jack.

[0013] Furthermore, in order to ensure stability during testing under the action of an integrated detection table, and utilize the secondary wiring cable and the primary test cable for auxiliary detection to achieve material saving and ensure stable and reliable testing, the testing component includes an integrated detection table installed on one side of the copper conducting rod. One side of the integrated detection table is set as the secondary wiring end, one end of the integrated detection table is set as the detection output end, and one side of the detection output end is set as the detection input end; one side of the secondary wiring end is connected to the lead wire through a secondary wiring cable, and one side of both the detection output end and the detection input end is connected to both ends of the copper conducting rod through a primary test cable.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the present utility model provides a tooling for testing combined instrument transformers on pole-mounted circuit breakers, having the following beneficial effects:

[0016] (1) The structure of the present utility model is simple and the operation is convenient. By setting the clamping component, the copper wiring terminal can be fixed on both sides of the copper conducting rod under the action of a knob, reducing the assembly and installation debugging time of workers, and achieving the purpose of convenient operation and labor saving.

[0017] (2) By setting the testing component in the present utility model, connecting the secondary wiring cable and the primary test cable to the copper conducting rod and the combined instrument transformer respectively, it is possible to reduce the assembly and installation debugging time of workers while realizing testing, eliminate the problem of low efficiency caused by installation and debugging, and at the same time, it can be reused with a long service life, avoiding the waste phenomenon of other components after testing. Description of the drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 FIG. is a schematic structural diagram of a tooling for testing a combined current transformer on a pole-mounted circuit breaker according to an embodiment of the present invention;

[0020] Figure 2 FIG. is a partial schematic diagram of a tooling for testing a combined current transformer on a pole-mounted circuit breaker according to an embodiment of the present invention;

[0021] Figure 3 FIG. is a partial cross-sectional view of a tooling for testing a combined current transformer on a pole-mounted circuit breaker according to an embodiment of the present invention;

[0022] Figure 4 FIG. is a schematic structural diagram of a clamping assembly in a tooling for testing a combined current transformer on a pole-mounted circuit breaker according to an embodiment of the present invention;

[0023] Figure 5 FIG. is a cross-sectional view of a clamping assembly in a tooling for testing a combined current transformer on a pole-mounted circuit breaker according to an embodiment of the present invention.

[0024] In the figures:

[0025] 1, copper conducting rod; 2, combined current transformer; 3, clamping assembly; 301, connecting plate; 302, jack; 303, knob; 4, copper terminal; 5, copper gasket sleeve; 6, test assembly; 601, integrated detection platform; 602, secondary wiring terminal; 603, detection output terminal; 604, detection input terminal; 605, secondary wiring cable; 606, primary test cable; 7, mounting hole; 8, lead wire. Detailed implementation manners

[0026] To further illustrate the embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention. They are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0027] According to an embodiment of the present invention, a tooling for testing a combined current transformer on a pole-mounted circuit breaker is provided.

[0028] The present utility model will be further described in conjunction with the accompanying drawings and specific embodiments. As Figures 1 - 5 shown, a tooling for testing a combined mutual inductor on a pole-mounted circuit breaker according to an embodiment of the present utility model includes a copper conductive rod 1. A combined mutual inductor 2 is sleeved outside the copper conductive rod 1. Copper wiring terminals 4 are arranged on both sides of the copper conductive rod 1 through clamping components 3. A copper gasket sleeve 5 is arranged on one side of the copper wiring terminal 4. Testing components 6 are arranged at both ends of the copper conductive rod 1.

[0029] In one embodiment, for the above-mentioned combined mutual inductor 2, an installation hole 7 is arranged inside the combined mutual inductor 2, and a lead wire 8 is arranged at the bottom end of the combined mutual inductor 2. The installation hole 7 inside the combined mutual inductor 2 penetrates to the contact surface inside the copper conductive rod 1 and fits with the contact surface of the copper gasket sleeve 5, so as to facilitate the installation of the combined mutual inductor 2 inside the copper conductive rod 1.

[0030] In one embodiment, for the above-mentioned clamping component 3, the clamping component 3 includes connection plates 301 installed on both sides of the copper conductive rod 1, and the copper wiring terminal 4 is installed at the top end of the connection plate 301. A jack 302 is arranged inside the connection plate 301, and a knob 303 is arranged inside the jack 302, so as to fix the copper wiring terminal 4 on both sides of the copper conductive rod 1 under the action of the knob 303, reduce the assembly and installation debugging time of workers, and achieve the purpose of convenient operation and labor saving.

[0031] In one embodiment, for the above-mentioned testing component 6, the testing component 6 includes an integrated detection table 601 installed on one side of the copper conductive rod 1. One side of the integrated detection table 601 is set as a secondary wiring terminal 602, one end of the integrated detection table 601 is set as a detection output terminal 603, and one side of the detection output terminal 603 is set as a detection input terminal 604. One side of the secondary wiring terminal 602 is connected to the lead wire 8 through a secondary wiring cable 605. One side of the detection output terminal 603 and the detection input terminal 604 are both connected to both ends of the copper conductive rod 1 through a primary test cable 606, so as to ensure the stability during testing under the action of the integrated detection table 601, and the use of the secondary wiring cable 605 and the primary test cable 606 for auxiliary detection can achieve the purpose of saving materials and ensuring stable and reliable testing.

[0032] In order to facilitate the understanding of the above technical solution of the present utility model, the working principle or operation mode of the present utility model in the actual process will be described in detail below.

[0033] In practical applications, the staff first screw the copper terminal 4 into the left-threaded connection of the copper conducting rod 1, pass the copper gasket sleeve 5 through the left side of the copper conducting rod 1 to contact the right side of the copper terminal 4, and at the same time pass the mounting hole 7 of the combined transformer 2 through the left contact surface of the copper conducting rod 1 to fit with the contact surface of the copper gasket sleeve 5. After the copper gasket sleeve 5 is sleeved, the copper terminal 4 is screwed tightly to fix the combined transformer 2, the copper terminal 4, the copper gasket sleeve 5 and the copper conducting rod 1 together.

[0034] As Figure 1 shown, connect the primary test cable 606 corresponding to the test output terminal 603 of the integrated test bench 601 to the copper terminal 4 on the left (incoming line), and connect the primary test cable 606 corresponding to the test input terminal 604 of the integrated test bench 601 to the copper terminal 4 on the right (outgoing line). Connect the combined transformer 2 to the integrated test bench 601 through the secondary wiring cable 605 and the secondary wiring terminal 602. It should be noted that the secondary wiring cables 605 with wiring numbers U+, U-, Uo+, Uo-, I+, I-, Io+, Io- at the lead 8 corresponding to the combined transformer 2 are respectively connected to the U+, U-, Uo+, Uo-, I+, I-, Io+, Io- at the secondary wiring terminal 602 of the integrated test bench 601, and set the voltage parameters of the integrated test bench 601 as follows: the phase voltage is (10 kV / √3) / (3.25 V / √3), and the accuracy is 0.5 / 3P class; the zero-sequence voltage is (10 kV / √3) / (6.5 V / 3), and the accuracy is 1 / 3P class; the phase current is 600 A / 1 V, and the accuracy is 5P10 / 0.5S class, then the zero-sequence current transformer is 20 A / 0.2 V, and the accuracy is 1S / 10P30 class. Finally, the test data is displayed on the display screen corresponding to the integrated test bench 601.

[0035] To sum up, with the above technical solutions of the present invention, the present invention has a simple structure and convenient operation. By setting the clamping component 3, the copper terminal 4 can be fixed on both sides of the copper conducting rod 1 under the action of the knob 303, reducing the assembly and installation and debugging time of workers, and achieving the purpose of convenient operation and labor saving. By setting the test component 6, the secondary wiring cable 605 and the primary test cable 606 are respectively connected to the copper conducting rod 1 and the combined transformer 2, which can reduce the assembly and installation and debugging time of workers during the test, eliminate the problem of low efficiency caused by installation and debugging, and at the same time can be reused with a long service life, avoiding the waste of other components after the test.

[0036] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "setting", "connection", "fixation", "swivel connection" and the like shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0037] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A tooling for testing combined instrument transformers on pole-mounted circuit breakers, including a copper conducting rod (1), characterized in that, A combined mutual inductor (2) is sleeved outside the copper conducting rod (1). Copper wiring terminals (4) are arranged on both sides of the copper conducting rod (1) through clamping components (3). A copper gasket sleeve (5) is arranged on one side of the copper wiring terminal (4). Testing components (6) are arranged at both ends of the copper conducting rod (1).

2. The tooling for testing the combined mutual inductor on the pole-mounted circuit breaker according to claim 1, characterized in that, An installation hole (7) is arranged inside the combined mutual inductor (2). A lead wire (8) is arranged at the bottom end of the combined mutual inductor (2).

3. The fixture for testing the combined mutual inductor on the pole-mounted circuit breaker according to claim 1, characterized in that, The combined mutual inductor (2) is inserted into the copper conducting rod (1), and the contact surface of the combined mutual inductor (2) is in fit with the contact surface of the copper gasket sleeve (5).

4. A tool for testing combined current transformers on pole-mounted circuit breakers according to claim 1, characterized in that, The clamping component (3) includes connecting plates (301) installed on both sides of the copper conducting rod (1). The copper wiring terminal (4) is installed at the top end of the connecting plate (301). A jack (302) is formed inside the connecting plate (301), and a knob (303) is arranged inside the jack (302).

5. The fixture for testing the combined mutual inductor on the pole-mounted circuit breaker according to claim 2, characterized in that, The testing component (6) includes an integrated detection table (601) installed on one side of the copper conducting rod (1). One side of the integrated detection table (601) is a secondary wiring terminal (602). One end of the integrated detection table (601) is a detection output terminal (603). A detection input terminal (604) is arranged on one side of the detection output terminal (603).

6. The fixture for testing the combined mutual inductor on the pole-mounted circuit breaker according to claim 5, characterized in that, One side of the secondary wiring terminal (602) is connected to the lead wire (8) through a secondary wiring cable (605). One sides of the detection output terminal (603) and the detection input terminal (604) are both connected to both ends of the copper conducting rod (1) through a primary test cable (606).

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