CN213069060U - Automatic line-changing voltage-withstanding testing device for multi-core cable - Google Patents
Automatic line-changing voltage-withstanding testing device for multi-core cable Download PDFInfo
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- CN213069060U CN213069060U CN202020777534.6U CN202020777534U CN213069060U CN 213069060 U CN213069060 U CN 213069060U CN 202020777534 U CN202020777534 U CN 202020777534U CN 213069060 U CN213069060 U CN 213069060U
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Abstract
The utility model discloses an automatic withstand voltage test device that trades line of multicore cable, including high-pressure test platform and trade line test circuit, high-pressure test platform includes high-voltage output end high-voltage phase line, high-voltage output end zero-phase line, withstand voltage tester, eight test fixture and three test control button, trade line test circuit including be controlled by respectively test control button's main ac contactor, main ac contactor controls four parallelly connected branch ac contactor that set up respectively. The device has higher test standard, promotes test work efficiency, promotes quality verification conservatism and assurance ability.
Description
Technical Field
The utility model relates to a wire and cable alternating voltage test technical field especially relates to an automatic withstand voltage testing arrangement that trades line of multicore cable.
Background
Along with the rapid development of multi-core cables, the dual influences of the existing field and product measurement are required to improve the working efficiency urgently. At present, according to the national standard GB/T3048.8-2007, the clamp (phase and core wire combination) needs to be frequently replaced for the high-voltage test work of the multi-core cable, the working strength is high, time and labor are consumed, and meanwhile, the phenomenon of over-test or missing test caused by personnel memory factors occurs. Based on the reasons, independent research and development of the high-voltage testing automatic phase-changing device are imperative.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art not enough, the technical problem that solve provides an automatic withstand voltage testing arrangement that trades line of multicore cable, has higher test standard, promotes test work efficiency, promotes quality verification conservatism and proof capability.
The utility model discloses a make above-mentioned technical problem solve through following technical scheme.
The multi-core cable automatic line-changing voltage-withstand testing device comprises a high-voltage testing platform and a line-changing testing circuit, wherein the high-voltage testing platform comprises a high-voltage phase line at a high-voltage output end, a zero-phase line at the high-voltage output end, a voltage-withstand tester, first to eighth testing clamps and first to third testing control buttons, the line-changing testing circuit comprises first to third main alternating current contactors controlled by the first to third testing control buttons respectively, and the main alternating current contactors control four branch alternating current contactors arranged in parallel respectively; wherein, each two-position upper contact of the first branch AC contactor and the second branch AC contactor is connected in parallel with the high-voltage phase line output end of the first main AC contactor, and each two-position lower contact matched with the upper contact is electrically connected with the first to the fourth test fixtures in sequence; each upper contact of the fifth to eighth branch alternating current contactors is connected in parallel with the high-voltage phase line output end of the second main alternating current contactor, and each lower contact matched with the upper contact is sequentially and electrically connected with the first, third, fifth and seventh test fixtures; the contact parallel access on each two of ninth branch ac contactor and eleventh branch ac contactor the high voltage phase line output of third main ac contactor and with each two lower contacts of last contact matched with connect in proper order first, second, fifth and sixth test fixture, the contact parallel access on each two of tenth branch ac contactor and twelfth branch ac contactor the zero phase line output of third main ac contactor and with each two lower contacts of last contact matched with connect in proper order third, fourth, seventh and eighth test fixture.
Preferably, three of said test control buttons are interlocked.
Preferably, the main alternating current contactors are interlocked and connected.
Preferably, the high-voltage test bench is provided with a circuit conduction indicator lamp matched with the test control button.
The multi-core cable automatic line-changing voltage-withstanding test method comprises the following steps:
the method comprises the following steps: the multi-core cable is a 2-to-8-core cable, all the cores of the multi-core cable are correspondingly accessed one by one according to the sequence of the test fixture, and the following test steps are selectively executed;
step two: pressing a first test control button, closing a first main alternating current contactor coil, providing coil power for first to fourth branch alternating current contactors to enable upper and lower contacts which are matched to be conducted, enabling a second main alternating current contactor and a third main alternating current contactor to be in an interlocking contact disconnection state, keeping test required time length after a high-voltage test board boosts a specified voltage value of a cable product test, automatically reducing the voltage to 0V, eliminating short circuit, breakdown and flashover faults, enabling a withstand voltage test to pass, closing the power supply, and executing a third step;
step three: pressing a second test control button, closing a second main alternating current contactor coil, providing coil power for fifth to eighth branch alternating current contactors to enable upper and lower contacts which are matched to be conducted, enabling the first and third main alternating current contactors to be in an interlocking contact disconnection state, automatically reducing the voltage to 0V after a high-voltage test board keeps a test required time after boosting a specified voltage value of a cable product, eliminating short-circuit, breakdown and flashover faults, passing a voltage withstanding test, closing the power supply, and executing the fourth step;
step four: and pressing a third test control button, closing a coil of the third main alternating current contactor, providing coil power for the ninth to twelfth branch alternating current contactors to enable upper and lower contacts which are matched to be conducted, enabling the first and second main alternating current contactors to be in an interlocking contact disconnection state, automatically reducing the voltage to 0V after the high-voltage test board keeps the test required time after boosting the voltage to a specified voltage value of a cable product, eliminating short circuit, breakdown and flashover faults, passing a voltage withstanding test, closing the power supply, and ending the test.
Preferably, in step two, in the first to eighth core testing process for the 8-core cable, a test voltage is generated between each of the cores (1, 5), (1, 6), (1, 7), (1, 8), (2, 5), (2, 6), (2, 7), (2, 8), (3, 5), (3, 6), (3, 7), (3, 8), (4, 5), (4, 6), (4, 7), (4, 8).
Preferably, in step three, in the first to eighth core testing process for the 8-core cable, a test voltage is generated between each of the cores (1, 2), (1, 4), (1, 6), (1, 8), (3, 2), (3, 4), (3, 6), (3, 8), (5, 2), (5, 4), (5, 6), (5, 8), (7, 2), (7, 4), (7, 6), (7, 8).
Preferably, in step four, in the first to eighth core testing process for the 8-core cable, a test voltage is generated between each of the cores (1, 3), (1, 4), (1, 7), (1, 8), (2, 3), (2, 4), (2, 7), (2, 8), (5, 3), (5, 4), (5, 7), (5, 8), (6, 3), (6, 4), (6, 7), (6, 8).
The utility model has the advantages that: through AC contactor theory of operation, combine high-pressure test to trade the line rule, develop three key buttons and accomplish the whole purposes that detect of 8 core cable products in succession, get rid of arbitrary two cores or many troubles, require more than national standard, the quality verification guarantee is stronger, when promoting efficiency in 8 cores and 8 cores or more cable tests, promote the product electrical property test guarantee ability after the multiple combination, promote product quality verification conservatism and quality assurance ability.
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.
Fig. 1 is a schematic structural diagram of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, the utility model discloses automatic withstand voltage testing arrangement that trades line of multicore cable's principle structure schematic diagram, include high-pressure test platform and trade line test circuit, high-pressure test platform includes high-pressure output end high-voltage phase line, high-pressure output end zero-phase line, withstand voltage tester, first to eighth test fixture 11, 12, 13, 14, 15, 16, 17, 18 and first to third test control button 21, 22, 23, it is three interlocking wiring between the test control button, it is further, on the high-pressure test platform with test control button cooperatees and is provided with circuit conduction indicator 41, 42, 43. The line changing test circuit comprises a first main alternating current contactor, a second main alternating current contactor, a third main alternating current contactor 31, a third main alternating current contactor, a fourth main alternating. The main alternating current contactor respectively controls four branch alternating current contactors which are arranged in parallel.
Wherein, the contact parallel access on each two of first branch ac contactor 311 and second branch ac contactor 312 the high voltage phase line output of first main ac contactor and with each two lower contacts of last contact matched with electricity in proper order connect first to fourth test fixture, the contact parallel access on each two of third branch ac contactor 313 and fourth branch ac contactor 314 the zero phase line output of first main ac contactor and with each two lower contacts of last contact matched with electricity in proper order connect fifth to eighth test fixture.
The first, the third, the fifth and the seventh test fixture are connected in parallel to each upper contact of the fifth to the eighth branch ac contactor 321, 322, 323, 324, the high-voltage phase line output end of the second main ac contactor and the first, the third, the fifth and the seventh test fixture are connected in parallel to each lower contact matched with the upper contact, the zero-phase line output end of the second main ac contactor and the first, the fourth, the sixth and the eighth test fixture are connected in series to each upper contact of the fifth to the eighth branch ac contactor.
The high-voltage phase line output end of the third main alternating current contactor is connected in parallel with the two upper contacts of the ninth branch alternating current contactor 331 and the eleventh branch alternating current contactor 333, the two lower contacts of the upper contacts are sequentially and electrically connected with the first test fixture, the second test fixture, the fifth test fixture and the sixth test fixture, the two upper contacts of the tenth branch alternating current contactor 332 and the twelfth branch alternating current contactor 334 are connected in parallel with the zero-phase line output end of the third main alternating current contactor and the two lower contacts of the upper contacts are sequentially and electrically connected with the third test fixture, the fourth test fixture, the seventh test fixture and the eighth test fixture.
Referring to fig. 1, after cable cores are sequentially connected to corresponding first to eighth test fixtures, an automatic cable-changing test process is performed.
The first step is as follows: after the first test control button is pressed, the coil of the first main alternating current contactor is closed (the second and third main alternating current contactors are in an interlocking contact off state, the line conduction indicator lamp 41 is on, and the line conduction indicator lamps 42 and 43 are off), and coil power supplies are provided for the first to fourth branch alternating current contactors and then the first to fourth branch alternating current contactors are closed (upper and lower contacts are conducted), namely the first test control button controls 5 alternating current contactors. For safety distance considerations, all ac contactors have upper and lower contacts wired only with (first and third from left to right). Four contacts (upper contact 1 bit and upper contact 3 bit) of the first branch alternating current contactor and four contacts (upper contact 1 bit and upper contact 3 bit) of the second branch alternating current contactor are connected in parallel to the high-voltage phase line output end of the first main alternating current contactor, so that the first branch alternating current contactor and the second branch alternating current contactor are connected in parallel to be conducted into a high-voltage phase line. Four contacts (upper contact 1 bit and upper contact 3 bit) of the third branch alternating current contactor and four contacts (upper contact 1 bit and upper contact 3 bit) of the fourth branch alternating current contactor are connected in parallel to the zero-phase line output end of the first main alternating current contactor, so that the three contacts are connected in parallel to be conducted into a high-voltage zero line. The lower contact of a first branch alternating current contactor (corresponding to the same position of the wiring of the upper contact thereof) is sequentially connected into a first test fixture connecting wire and a second test fixture connecting wire from left to right, the lower contact of a second branch alternating current contactor (corresponding to the same position of the wiring of the upper contact thereof) is sequentially connected into a third test fixture connecting wire and a fourth test fixture connecting wire from left to right, the lower contact of a third branch alternating current contactor (corresponding to the same position of the wiring of the upper contact thereof) is sequentially connected into a fifth test fixture connecting wire and a sixth test fixture connecting wire from left to right, the lower contact of a fourth branch alternating current contactor (corresponding to the same position of the wiring of the upper contact thereof) is sequentially connected into a seventh test fixture connecting wire and an eighth test fixture connecting wire from left to right, the first test fixture, the fourth test fixture, the fifth test fixture, the sixth test fixture, the zero line, the high-voltage test bench is boosted, Breakdown and flashover faults), the voltage withstanding test is passed, and the second step is executed after the main power supply of the power frequency voltage withstanding table is closed.
The second step is that: after the second test control button is pressed, the coil of the second main ac contactor is closed (the first and third main ac contactors are in an interlocking contact off state, the line conduction indicator lamp 42 is on, and the line conduction indicator lamps 41 and 43 are off), and coil power is supplied to the fifth to eighth branch ac contactors and then the fifth to eighth branch ac contactors are closed (the upper and lower contacts are conducted), that is, the second test control button controls 5 ac contactors. For safety distance consideration, the upper and lower contacts of all contactors are connected only by using (selecting the first and third contacts from left to right); four contacts of the fifth branch alternating current contactor (upper contact 1 position), the sixth branch alternating current contactor (upper contact 1 position), the seventh branch alternating current contactor (upper contact 1 position) and the eighth branch alternating current contactor (upper contact 1 position) are connected in parallel to a high-voltage output end phase line of the high-voltage test bench, so that the high-voltage output end phase line is connected in parallel and conducted into a high-voltage phase line. Four contacts of a fifth branch alternating current contactor (an upper contact 3 bit), a sixth branch alternating current contactor (an upper contact 3 bit), a seventh branch alternating current contactor (an upper contact 3 bit) and an eighth branch alternating current contactor (an upper contact 3 bit) are connected in parallel to a zero phase line of a high-voltage output end of the high-voltage test bench, so that the high-voltage output end of the high-voltage test bench is connected in parallel to be conducted into a high-voltage zero line. The lower contact of a fifth branch AC contactor (corresponding to the same position of the upper contact wiring) is sequentially connected with a first test fixture connecting wire and a second test fixture connecting wire from left to right, the lower contact of a sixth branch AC contactor (corresponding to the same position of the upper contact wiring) is sequentially connected with a third test fixture connecting wire and a fourth test fixture connecting wire from left to right, the lower contact of a seventh branch AC contactor (corresponding to the same position of the upper contact wiring) is sequentially connected with a fifth test fixture connecting wire and a sixth test fixture connecting wire from left to right, the lower contact of an eighth branch AC contactor (corresponding to the same position of the upper contact wiring) is sequentially connected with a seventh test fixture connecting wire and an eighth test fixture connecting wire from left to right, so that the first test fixture, the third test fixture, the fifth test fixture and the seventh test fixture are connected with a conducting wire in parallel, the second test fixture, the fourth test fixture, the sixth test fixture and the eighth test fixture are connected with a, and (4) indicating that the two groups of parallel lines are eliminated (short circuit, breakdown and flashover faults), passing the voltage withstanding test, and executing the third step after closing the main power supply of the power frequency voltage withstanding station.
The third step: after the third test control button is pressed, the third main ac contactor coil is closed (the first and second main ac contactors are in an interlocking contact off state, the line conduction indicator lamp 43 is on, and the line conduction indicator lamps 41 and 42 are off), and coil power is supplied to the ninth to twelfth branch ac contactors and then the ninth to twelfth branch ac contactors are closed (the upper and lower contacts are conducted), that is, the third test control button controls 5 ac contactors. For safety distance consideration, the upper and lower contacts of all contactors are connected only by using (selecting the first and third contacts from left to right); four contacts (an upper contact 1 and an upper contact 3) of the ninth branch alternating current contactor and four contacts (the upper contact 1 and the upper contact 3) of the eleventh branch alternating current contactor are connected in parallel to a phase line of a high-voltage output end of the high-voltage test bench, so that the phase lines are connected in parallel and conducted into a high-voltage phase line; four contacts (an upper contact 1 bit and an upper contact 3 bit) of the tenth branch alternating current contactor and four contacts (the upper contact 1 bit and the upper contact 3 bit) of the twelfth branch alternating current contactor are connected in parallel to a zero phase line of a high-voltage output end of the high-voltage test bench, so that the zero phase line is connected in parallel and conducted into a high-voltage zero line. The lower contact of the ninth branch alternating current contactor (corresponding to the wiring same position of the upper contact thereof) is sequentially connected into the first test fixture connecting wire and the second test fixture connecting wire from left to right, the lower contact of the tenth branch alternating current contactor (corresponding to the wiring same position of the upper contact thereof) is sequentially connected into the third test fixture connecting wire and the fourth test fixture connecting wire from left to right, the lower contact of the eleventh branch alternating current contactor (corresponding to the wiring same position of the upper contact thereof) is sequentially connected into the fifth test fixture connecting wire and the sixth test fixture connecting wire from left to right, and the lower contact of the twelfth branch alternating current contactor (corresponding to the wiring same position of the upper contact thereof) is sequentially connected into. The first, second, fifth and sixth test fixtures are connected with the phase line in parallel, the third, fourth, seventh and eighth test fixtures are connected with the zero line in parallel, the voltage of the high-voltage test bed is increased to a specified voltage value, the specified voltage value is kept for a test required time, and then the voltage is automatically reduced to 0V, so that the faults (short circuit, breakdown and flashover faults) in two groups of parallel circuits are eliminated, the voltage withstanding test of the time passes, and the test is finished after the main power supply of the power frequency voltage withstanding table is closed.
All troubleshooting tests were performed on lines # 1-8 with three buttons, such as the following list:
after the operation of the first test control button in the first test step is finished, the test troubleshooting result is as follows: there is a possibility of failure between the cable cores 1, 2, 3, 4 and 5, 6, 7, 8, namely: 1 and 5, 1 and 6, 1 and 7, 1 and 8, 2 and 5, 2 and 6, 2 and 7, 2 and 8, 3 and 5, 3 and 6, 3 and 7, 3 and 8, 4 and 5, 4 and 6, 4 and 7, 4 and 8 generate over-test voltage, thereby eliminating the above 16 possibilities for fault test purposes, so that two numbers can be connected in parallel in the same phase circuit in subsequent tests.
After the second test control button operation of the second step of test is completed, the result of test troubleshooting is as follows: there is a possibility of failure between the cable cores 1, 3, 5, 7 and 2, 4, 6, 8, namely: elimination of the over-test voltages generated between 1 and 2, 1 and 4, 1 and 6, 1 and 8, 3 and 2, 3 and 4, 3 and 6, 3 and 8, 5 and 2, 5 and 4, 5 and 6, 5 and 8, 7 and 2, 7 and 4, 7 and 6, 7 and 8, thus eliminates the above 16 possibilities for fault testing purposes (including the 8 secondary tests of the number group eliminated in the first step), so that the two numbers can be connected in parallel in the same phase path in subsequent tests.
After the third test control button operation in the third test step is finished, the test troubleshooting result is as follows: there is a possibility of failure between the cable cores 1, 2, 5, 6 and 3, 4, 7, 8, namely: elimination of 1 and 3, 1 and 4, 1 and 7, 1 and 8, 2 and 3, 2 and 4, 2 and 7, 2 and 8, 5 and 3, 5 and 4, 5 and 7, 5 and 8, 6 and 3, 6 and 4, 6 and 7, 6 and 8 all generate over-test voltages between them, thus eliminating the above 16 possibilities for fault testing purposes (including the 10 groups eliminated in the first step), so that any two or more faults between 1 and 8 are eliminated.
In the test method of the 8-core cable, for example, in the test of the multi-core cable within 8 cores, all the cores are correspondingly accessed from the first test fixture in sequence, and the test method can improve the efficiency in the test of the 2-to 8-core multi-core cable, improve the electrical performance test guarantee capability of products after various combinations and improve the product quality verification conservatism and quality guarantee capability.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (4)
1. Automatic line withstand voltage testing arrangement that trades of multicore cable, characterized by: the high-voltage testing platform comprises a high-voltage testing platform and a wire changing testing circuit, wherein the high-voltage testing platform comprises a high-voltage phase line at a high-voltage output end, a zero-phase line at the high-voltage output end, a voltage resistance tester, a first testing clamp, a second testing clamp, a third testing control button and a third testing control button, the wire changing testing circuit comprises a first main alternating current contactor, a third main alternating current contactor and four branch alternating current contactors, wherein the first main alternating current contactor, the third main alternating current contactor and the fourth testing control button are respectively controlled by the first testing control; wherein, each two-position upper contact of the first branch AC contactor and the second branch AC contactor is connected in parallel with the high-voltage phase line output end of the first main AC contactor, and each two-position lower contact matched with the upper contact is electrically connected with the first to the fourth test fixtures in sequence; each upper contact of the fifth to eighth branch alternating current contactors is connected in parallel with the high-voltage phase line output end of the second main alternating current contactor, and each lower contact matched with the upper contact is sequentially and electrically connected with the first, third, fifth and seventh test fixtures; the contact parallel access on each two of ninth branch ac contactor and eleventh branch ac contactor the high voltage phase line output of third main ac contactor and with each two lower contacts of last contact matched with connect in proper order first, second, fifth and sixth test fixture, the contact parallel access on each two of tenth branch ac contactor and twelfth branch ac contactor the zero phase line output of third main ac contactor and with each two lower contacts of last contact matched with connect in proper order third, fourth, seventh and eighth test fixture.
2. The multi-core cable automatic line-changing voltage withstand testing device as claimed in claim 1, wherein: three test control buttons are interlocked and connected.
3. The multi-core cable automatic line-changing voltage withstand testing device as claimed in claim 1, wherein: and the main alternating current contactors are connected in an interlocking mode.
4. The multi-core cable automatic line-changing voltage withstand testing device as claimed in claim 1, wherein: and a circuit conduction indicator lamp is arranged on the high-voltage test board and matched with the test control button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020777534.6U CN213069060U (en) | 2020-05-12 | 2020-05-12 | Automatic line-changing voltage-withstanding testing device for multi-core cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020777534.6U CN213069060U (en) | 2020-05-12 | 2020-05-12 | Automatic line-changing voltage-withstanding testing device for multi-core cable |
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| CN213069060U true CN213069060U (en) | 2021-04-27 |
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| CN202020777534.6U Active CN213069060U (en) | 2020-05-12 | 2020-05-12 | Automatic line-changing voltage-withstanding testing device for multi-core cable |
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- 2020-05-12 CN CN202020777534.6U patent/CN213069060U/en active Active
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: HIPO ELECTRIX SCIENCE & TECHNOLOGY Co.,Ltd. Assignor: ZHEJIANG YUANTONG CABLE MANUFACTURE Co.,Ltd. Contract record no.: X2023980043722 Denomination of utility model: Automatic Line Changing and Voltage Withstand Test Device for Multicore Cables Granted publication date: 20210427 License type: Common License Record date: 20231019 |
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