CN107329038B - Multi-core cable test auxiliary device and test method - Google Patents
Multi-core cable test auxiliary device and test method Download PDFInfo
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- CN107329038B CN107329038B CN201710727580.8A CN201710727580A CN107329038B CN 107329038 B CN107329038 B CN 107329038B CN 201710727580 A CN201710727580 A CN 201710727580A CN 107329038 B CN107329038 B CN 107329038B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/58—Testing of lines, cables or conductors
- G01R31/60—Identification of wires in a multicore cable
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention belongs to the technical field of multi-core cable testing, and particularly relates to an auxiliary device for testing a multi-core cable. The invention discloses a multi-core cable test auxiliary device, aiming at solving the problems of low test accuracy and low test efficiency when a conventional method is adopted to test a multi-core cable. The auxiliary device is of an insulator structure and comprises a to-be-tested area and a testing area which are mutually independent, wherein a conductive medium is arranged in the to-be-tested area, the testing area is provided with a conductive plate, wherein short-circuit operation among a plurality of core wires in the to-be-tested multi-core cable can be realized through the conductive medium in the to-be-tested area, and the fixing of a metal part at the end part of the to-be-tested core wire can be realized through the conductive plate. The multi-core cable test auxiliary device is simple in structure and convenient to operate, and can improve the efficiency of testing the multi-core cable and the accuracy of a test result when the multi-core cable is subjected to auxiliary test.
Description
Technical Field
The invention belongs to the technical field of multi-core cable testing, and particularly relates to an auxiliary device and a testing method for multi-core cable testing.
Background
In a nuclear power plant, in order to ensure normal operation of power supply, control, protection, nuclear measurement, illumination and other work of electrical equipment in a reactor containment, a control cable and a power supply cable need to penetrate through an electrical penetration piece to realize connection of the inner part and the outer part of the containment, and the cables are mostly multi-core cables. After the laying and installation of the multi-core cable are completed, in order to ensure the communication of each core wire in the multi-core cable and the mutual insulation between different core wires, the multi-core cable needs to be tested, wherein the test includes a conduction test, a core wire-to-ground insulation test and an inter-core wire insulation test.
At present, when a multi-core cable is subjected to a conduction test, firstly, a core wire is selected as a tested core wire, one end of the tested core wire is connected with a grounding grid, and the other end of the tested core wire is connected with the grounding grid through a universal meter, so that a series loop among the tested core wire, the universal meter and the grounding grid is formed; and then conducting conduction test on the tested core wire through a multimeter. When a core wire-to-ground insulation test is carried out on the multi-core cable, firstly, one end of a tested core wire is connected with the anode of an insulation resistance tester, the other end of the tested core wire is fixedly placed in a suspended state by being held by an operator, and meanwhile, the cathode of the insulation resistance tester is connected with a grounding grid; and then carrying out a core wire to ground insulation test on the tested core wire by an insulation resistance tester. When the multi-core cable is subjected to an inter-core wire insulation test, firstly, one end of a tested core wire is connected with the anode of an insulation resistance tester, all other core wires at the same end of the cable are in short circuit through a connecting wire and are connected with the cathode of the insulation resistance tester, and meanwhile, the free end of the tested core wire is held and fixed in a suspended state by an operator; and then carrying out an inter-core wire insulation test on the tested core wire by using an insulation resistance tester. And after the test of one core wire is finished, replacing the other core wire to repeat the test process until the test of all the core wires is finished.
However, when the multi-core cable is tested by the method, the following problems exist: when the multi-core cable is laid but not put into use, the outer surface of each core wire is provided with an insulating skin, so that the size of the exposed metal part at the end part of each core wire is small. At this moment, if directly carry out multimeter and insulation resistance tester and the heart yearn of awaiting measuring be connected, then hardly guarantee that instrument and heart yearn tip can be fast accurate the completion be connected and remain stable contact throughout in the testing process, especially when carrying out insulation test between the heart yearn, hardly accomplish the short circuit between many heart yearns and keep the short circuit state, and every change test heart yearn just will carry out the short circuit operation of many heart yearns again, these all can cause the influence to the testing process, not only influence efficiency of software testing, and can produce the error to the test result, cause the decline of test accuracy. If the insulating skin of the core wire is stripped in advance, the testing workload is greatly increased, and the testing efficiency is reduced.
Disclosure of Invention
The invention provides a multi-core cable test auxiliary device, which aims to solve the problems of low test accuracy and low test efficiency when a conventional method is adopted to test a multi-core cable. The auxiliary device is of an insulator structure and comprises a to-be-tested area and a testing area which are mutually independent, wherein a conductive medium is arranged in the to-be-tested area, and a conductive plate is arranged in the testing area.
Preferably, the auxiliary device is also provided with a first connecting point and a second connecting point; the first connection point and the second connection point are electric conductors, the first connection point is connected with the conductive plate in the test area, and the second connection point is connected with the conductive medium in the area to be tested.
Preferably, the auxiliary device further comprises a measured area, wherein the measured area is communicated with the area to be measured through a conductive medium.
Preferably, the auxiliary device is a box structure, wherein the test area is located on the upper surface of the box, and the area to be tested are located inside the box.
Preferably, the area to be measured and the area to be measured are provided with round openings, the openings are located on the upper surface of the box body, a long strip-shaped sliding groove is arranged beside the openings, and one end of the sliding groove is communicated with the openings.
A multi-core cable test method adopting the multi-core cable test auxiliary device comprises preparation work and test work, wherein the preparation work comprises adding a conductive medium into the area to be tested; the test work comprises a conduction test, a core wire to ground insulation test and an inter-core wire insulation test.
The conducting test comprises the following specific steps:
step S1, selecting an ohmic contact of the multimeter, connecting one meter pen of the multimeter with the first connecting point, and connecting the other meter pen of the multimeter with a grounding grid; placing the end parts of all core wires in one end of the multi-core cable to be tested in the region to be tested;
step S2, taking out the core wire to be tested in the area to be tested through the sliding chute, confirming the core wire identification and connecting the core wire identification with the conductive plate in the test area, and connecting the end part of the core wire with the same identification at the other end of the multi-core cable to be tested with the grounding grid;
step S3, conducting test is carried out on the core wire to be tested through a universal meter, test data are recorded, and the core wire which is subjected to the test is placed in the tested area;
and step S4, repeating the step S2 and the step S3, and completing the conduction tests of all the core wires in sequence.
The method comprises the following specific steps of a core wire ground insulation test:
step T1, connecting a positive meter pen of the insulation resistance tester with the first connection point, connecting a negative meter pen of the insulation resistance tester with the second connection point, and connecting the second connection point with a grounding grid; placing the end parts of all core wires in one end of the multi-core cable to be tested in the area to be tested, and carrying out isolation processing on all core wires in the other end of the multi-core cable to be tested and a grounding grid;
step T2, taking out the core wire to be tested in the area to be tested through the sliding groove and connecting the core wire to be tested with the conducting plate in the testing area;
t3, conducting a core wire-to-ground insulation test on the core wire to be tested through an insulation resistance tester, recording test data, and placing the tested core wire in the tested area;
and step T4, repeating the steps T2 and T3, and completing the core wire-to-ground insulation test of all the core wires in sequence.
The insulation test among the core wires comprises the following specific steps:
step Y1, connecting a positive meter pen of the insulation resistance tester with the first connection point, and connecting a negative meter pen of the insulation resistance tester with the second connection point; placing the end parts of all core wires in one end of the multi-core cable to be tested in the region to be tested and contacting with the conductive medium;
step Y2, taking out the core wire to be tested in the area to be tested through the sliding chute and connecting the core wire to be tested with the conductive plate in the test area; carrying out insulation treatment on the core wire to be tested in the other end of the multi-core cable to be tested and other core wires;
step Y3, performing an inter-core wire insulation test on the core wire to be tested through an insulation resistance tester, recording test data, and placing the core wire subjected to the test in the tested area;
and step Y4, repeating the steps Y2 and Y3, and completing the insulation test among the core wires of all the core wires in sequence.
Preferably, the two ends of the multi-core cable to be tested are respectively provided with one multi-core cable test auxiliary device, wherein the multi-core cable test auxiliary device which is positioned at one end of the multi-core cable and is not required to be connected with the multimeter and the insulation resistance tester is used for isolating and short-circuiting the core wires of the multi-core cable at the end.
When the multi-core cable test auxiliary device is adopted to test the multi-core cable, the multi-core cable test auxiliary device has the following beneficial effects:
1. in the multi-core cable test auxiliary device, a region to be tested, a test region and a tested region are arranged, and a conductive medium is added into the region to be tested and the tested region, so that a first connecting point and a second connecting point are respectively arranged in the test region and the region to be tested. At the moment, short circuit connection between the core wires can be realized by means of the conductive media in the area to be tested and the area to be tested, and then the connection between the second connecting point and the grounding grid can be completed. Through the connection of the current-conducting plate and the core wire to be tested in the test area and the connection of the first connecting point and the test instrument, the fast and stable connection between the core wire to be tested and the test instrument can be realized. Therefore, in the test process, the connection speed between the core wire and the test instrument and between the core wire and the core wire can be increased, the test efficiency is increased, the connection stability can be ensured, the influence on the test process is reduced, and the accuracy of the test result is improved.
2. The multi-core cable test auxiliary device is simple in structure, convenient to manufacture, capable of being processed by insulating plastic materials, convenient to use and capable of performing short circuit operation among multiple core wires by selecting the most common tap water as a conductive medium.
Drawings
Fig. 1 is a schematic partial sectional view of the auxiliary device for testing a multi-core cable according to the present invention.
Detailed Description
The technical scheme of the invention is further described below by combining the attached drawings.
Referring to fig. 1, the multi-core cable test auxiliary device of the present invention is an insulator structure, and includes a region to be tested 1, a test region 2, and a tested region 3, which are independent of each other. In which a conductive medium is provided inside the region to be tested 1 and the region to be tested 3, and these two regions are communicated with each other through the conductive medium, and a conductive plate 21 is provided in the test region 2. When the multi-core cable is tested, the to-be-tested area 1 is used for placing core wires to be tested in the multi-core cable to be tested, the testing area 2 is used for fixing the metal part at the end part of the core wires to be tested, and the tested area 3 is used for placing the core wires after the test is finished.
Preferably, in the invention, the multi-core cable test auxiliary device adopts a square box structure processed by plastic materials. The area to be measured 1 and the area to be measured 3 are arranged in the box body, so that the conductive medium can be conveniently contained and the core wires can be conveniently fixed; the test area 2 is arranged on the upper surface of the box body so as to facilitate the disassembly and assembly of the core wire to be tested and the conductive plate 21 in the test area 2. In addition, be equipped with a baffle 4 between district 1 and the district 3 of having surveyed for keep apart the heart yearn that is located two regions, avoid the tip of two regional interior heart yearns to take place the entanglement, thereby guarantee the convenience of taking out the heart yearn. Meanwhile, the height of the baffle 4 is designed to be lower than that of the conductive medium, so that the communication between the conductive media in the two regions is ensured.
In the multi-core cable test auxiliary device, a first connection point 5 and a second connection point 6 are also arranged. Wherein the first connection point 5 is connected with the conductive plate 21 in the test area 2, and the second connection point 6 is connected with the conductive medium in the area to be tested 1. In the present embodiment, the first connection point 5 and the second connection point 6 each adopt a conductive metal rod structure, and one end of the first connection point 5 is connected to the conductive plate 21 by welding, and the other end is in a free state. One end of the second connecting point 6 extends into the box body to be contacted with the conductive medium, and the other end is positioned outside the box body and is in a free state
Preferably, the opening 11 of the region to be measured 1 is arranged on the upper surface of the box body and is of a circular structure, meanwhile, a long strip-shaped sliding groove 12 is arranged beside the opening 11, and one end of the sliding groove 12 is communicated with the opening 11. Like this, when will be located the heart yearn that awaits measuring in the district 1 of awaiting measuring and take out, take out the operation along the length direction of spout 12, can greatly reduced the degree of bending to the heart yearn that awaits measuring at this in-process to reduce the damage that causes the heart yearn in the test procedure, especially reduce the rupture damage to the inside metal conductor of heart yearn. Similarly, the opening 31 of the measured area 3 is also arranged on the upper surface of the box body and is of a circular structure, and meanwhile, a strip-shaped chute 32 is also arranged beside the opening 31 and used for protecting the core wire in the core wire placing process.
Referring to fig. 1, when the multi-core cable test auxiliary device of the present invention is used to test a multi-core cable, first, a conductive medium is added to a region to be tested 1. In this embodiment, tap water is used as the conductive medium, and the tap water is added to the height position of the submerged baffle 4 to ensure the mutual communication between the area to be measured 1 and the measured area 3. And then, testing the multi-core cable to be tested by using a multimeter and an insulation resistance tester, wherein the testing comprises a conduction test, a core wire-to-ground insulation test and an inter-core wire insulation test. In this example, the two ends of the cable to be tested are divided into an end a and an end B, wherein during the test, the multimeter and the insulation resistance tester are both directly or indirectly connected to the core wire of the end a of the cable to be tested.
The multi-core cable test auxiliary device provided by the invention is used for conducting test on the multi-core cable, and comprises the following specific steps:
and step S1, selecting an ohmic contact of the multimeter, connecting one meter pen of the multimeter with the first connecting point 5, and connecting the other meter pen of the multimeter with the grounding grid. And placing the end parts of all core wires at the A end in the multi-core cable to be tested in the region 1 to be tested.
Step S2, the core wire to be tested in the region 1 to be tested is taken out through the sliding slot 12, the identification thereof is determined and fixedly connected with the conductive plate 21 in the test region 2, the core wire with the same identification at the end B of the multi-core cable to be tested is found out, and the end thereof is connected with the grounding grid. At this time, a closed loop is formed among the core wire to be measured, the conductive plate 21, the first connection point 5, the multimeter, and the ground net.
In the present embodiment, a plurality of insertion holes 22 made of conductive material are fixed to the conductive plate 21 by welding, and are used for inserting the end portion of the core wire to be tested, so that the metal portion of the end portion of the core wire to be tested contacts the conductive plate 21. Meanwhile, the metal part at the end of the core wire to be tested is clamped inside the insertion opening 22 by the deformation restoring force generated on the core wire to be tested after the core wire to be tested is inserted into the insertion opening 22, so that the metal part at the end of the core wire to be tested is stably contacted with the conductive plate 21.
And step S3, conducting test on the core wire to be tested through a universal meter, recording test data, and placing the core wire subjected to the test in the tested area 3.
And step S4, repeating the step S2 and the step S3, and completing the conduction tests of all the core wires in the multi-core cable in sequence.
The method for testing the ground insulation of the core wire of the multi-core cable by adopting the auxiliary device for testing the multi-core cable comprises the following specific steps:
and step T1, connecting the positive electrode meter pen of the insulation resistance tester with the first connecting point 5, connecting the negative electrode meter pen of the insulation resistance tester with the second connecting point 6, and connecting the second connecting point 6 with the grounding grid. And (3) placing the end parts of all core wires at the end A in the multi-core cable to be detected in the region 1 to be detected, fully contacting with the conductive medium, and shielding and isolating all core wires at the end B in the multi-core cable to be detected and the grounding grid.
And step T2, taking out the core wire to be tested in the region to be tested 1 through the chute 12, and fixedly connecting the core wire to be tested with the conductive plate 21 in the test region 2. At this time, one end of the core wire to be tested is connected with the grounding grid after passing through the conducting plate 21, the first connecting point 5, the insulation resistance tester and the second connecting point 6 in sequence, and the other end of the core wire to be tested is shielded and isolated from the grounding grid. Meanwhile, the other core wires at the end A of the multi-core cable are kept in the area to be measured 1.
And T3, conducting a core wire-to-ground insulation test on the core wire to be tested through the insulation resistance tester, recording test data, and placing the core wire subjected to the test in the tested area 3.
And step T4, repeating the steps T2 and T3, and completing the insulation test of all the core wires in the multi-core cable to the ground in sequence.
The method for testing the insulation between the core wires of the multi-core cable by adopting the auxiliary device for testing the multi-core cable comprises the following specific steps:
and step Y1, connecting the positive electrode meter pen of the insulation resistance tester with the first connecting point 5, and connecting the negative electrode meter pen of the insulation resistance tester with the second connecting point 6. And placing the end parts of all core wires at the end A in the multi-core cable to be tested in the region 1 to be tested, and contacting with the conductive medium to form short-circuit connection.
Step Y2, the core wire to be tested in the test area 1 is taken out through the chute 12 and is fixedly connected with the conductive plate 21 in the test area 2. And carrying out shielding and isolating treatment on the core wire to be tested positioned at the end B in the multi-core cable to be tested and other core wires at the end. At this time, one end of the core wire to be tested is connected with the conductive plate 21, the first connection point 5, the insulation resistance tester and the second connection point 6 in sequence, and the other end is shielded and isolated from other core wires and is in an independent state. Meanwhile, other core wires at the end A of the multi-core cable are positioned in the region to be tested 1 and are in short circuit connection through a conductive medium, and are connected with the negative electrode of the insulation resistance tester through a second connection point 6.
And step Y3, performing an inter-core wire insulation test on the core wire to be tested through the insulation resistance tester, recording test data, and placing the core wire subjected to the test in the tested area 3.
And step Y4, repeating the steps Y2 and Y3, and completing the insulation test among all the core wires in the multi-core cable in sequence.
In addition, the core wire ground insulation test and the core wire inter-insulation test of the same core wire to be tested can be completed together according to specific conditions in the test process. After the core wire insulation test is completed, the second connection point 6 is directly connected with the grounding grid, and the insulation resistance tester can be operated again to perform the insulation test between the core wires of the same core wire to be tested.
Preferably, two ends of the multi-core cable to be tested are respectively provided with a multi-core cable test auxiliary device, wherein the multi-core cable test auxiliary device positioned at the end a of the multi-core cable to be tested is called a multi-core cable test auxiliary device a, and the multi-core cable test auxiliary device positioned at the end B of the multi-core cable to be tested is called a multi-core cable test auxiliary device B. In this way, the auxiliary device for testing a multi-core cable a is used according to the operation in the method, and the auxiliary device for testing a multi-core cable B performs shielding isolation and short-circuit operation on the core wire at the end B of the cable to be tested.
For example, when conducting a conduction test on the multi-core cable, a conductive medium may be added to the region under test 1 of the multi-core cable test auxiliary device B, and the second connection point 6 may be connected to the ground grid through a connection wire. Therefore, the core wire to be tested at the end B of the multi-core cable to be tested is placed in the region to be tested 1 of the multi-core cable test auxiliary device B, so that the core wire at the end can be quickly connected with the grounding grid through the conductive medium, and the core wire at the end can be always stably connected with the grounding grid in the conduction test process.
When a core wire-to-ground insulation test is carried out on the multi-core cable, all core wires at the end B of the multi-core cable to be tested are placed in the area 1 to be tested of the multi-core cable test auxiliary device B by utilizing the insulation characteristic of the multi-core cable test auxiliary device, so that all the core wires at the end are shielded and isolated from the grounding network, and the core wires at the end are always kept isolated from the grounding network in the core wire-to-ground insulation test process.
When the multi-core cable is subjected to the inter-core wire insulation test, all core wires at the end B in the multi-core cable to be tested are firstly placed in the area to be tested 1 of the multi-core cable test auxiliary device B, and then the end part of the core wire to be tested corresponding to the end is inserted into the socket 22 in the test area 2 in the test process, so that the core wire to be tested at the end is shielded and isolated from other core wires, and the shielding isolation between the core wire to be tested at the end B in the multi-core cable and the rest of the core wires is ensured in the inter-core wire insulation test process.
Claims (9)
1. A multi-core cable test auxiliary device is characterized in that the auxiliary device is of an insulator structure and comprises a to-be-tested area and a test area which are mutually independent, wherein a conductive medium is arranged in the to-be-tested area, and the test area is provided with a conductive plate; the auxiliary device is also provided with a first connecting point and a second connecting point; the first connection point and the second connection point are electric conductors, the first connection point is connected with the conductive plate in the test area, and the second connection point is connected with the conductive medium in the area to be tested.
2. The multi-core cable testing aid of claim 1, further comprising a tested area, wherein the tested area is in communication with the area under test via a conductive medium.
3. The multi-core cable testing aid of claim 2, wherein the aid is a box structure, wherein the testing area is located on the upper surface of the box, and the area to be tested are located inside the box.
4. The multi-core cable test auxiliary device as claimed in claim 3, wherein the area to be tested and the area to be tested are provided with circular openings, the openings are located on the upper surface of the box body, and elongated sliding grooves are provided beside the openings, and one ends of the sliding grooves are communicated with the openings.
5. A multi-core cable testing method using the multi-core cable testing assisting apparatus as claimed in claim 4, comprising a preparation work and a testing work, wherein the preparation work comprises adding a conductive medium to the region to be tested; the test work comprises a conduction test, a core wire to ground insulation test and an inter-core wire insulation test.
6. The multi-core cable testing method as claimed in claim 5, wherein the conducting test comprises the following specific steps:
step S1, selecting an ohmic contact of the multimeter, connecting one meter pen of the multimeter with the first connecting point, and connecting the other meter pen of the multimeter with a grounding grid; placing the end parts of all core wires in one end of the multi-core cable to be tested in the region to be tested;
step S2, taking out the core wire to be tested in the area to be tested through the sliding chute, confirming the core wire mark and connecting the core wire mark with the conductive plate in the test area; connecting the end part of the core wire with the same mark at the other end of the multi-core cable to be tested with a grounding network;
step S3, conducting test is carried out on the core wire to be tested through a universal meter, test data are recorded, and the core wire which is subjected to the test is placed in the tested area;
and step S4, repeating the step S2 and the step S3, and completing the conduction tests of all the core wires in sequence.
7. The multi-core cable testing method as claimed in claim 5, wherein the specific steps of the core wire insulation to ground test are as follows:
step T1, connecting a positive meter pen of the insulation resistance tester with the first connection point, connecting a negative meter pen of the insulation resistance tester with the second connection point, and connecting the second connection point with a grounding grid; placing the end parts of all core wires in one end of the multi-core cable to be tested in the area to be tested, and carrying out isolation processing on all core wires in the other end of the multi-core cable to be tested and a grounding grid;
step T2, taking out the core wire to be tested in the area to be tested through the sliding groove and connecting the core wire to be tested with the conducting plate in the testing area;
t3, conducting a core wire-to-ground insulation test on the core wire to be tested through an insulation resistance tester, recording test data, and placing the tested core wire in the tested area;
and step T4, repeating the steps T2 and T3, and completing the core wire-to-ground insulation test of all the core wires in sequence.
8. The multi-core cable testing method as claimed in claim 5, wherein the insulation test between core wires comprises the following specific steps:
step Y1, connecting a positive meter pen of the insulation resistance tester with the first connection point, and connecting a negative meter pen of the insulation resistance tester with the second connection point; placing the end parts of all core wires in one end of the multi-core cable to be tested in the region to be tested and contacting with the conductive medium;
step Y2, taking out the core wire to be tested in the area to be tested through the sliding chute and connecting the core wire to be tested with the conductive plate in the test area; carrying out insulation treatment on the core wire to be tested in the other end of the multi-core cable to be tested and other core wires;
step Y3, performing an inter-core wire insulation test on the core wire to be tested through an insulation resistance tester, recording test data, and placing the core wire subjected to the test in the tested area;
and step Y4, repeating the steps Y2 and Y3, and completing the insulation test among the core wires of all the core wires in sequence.
9. The method as claimed in any one of claims 6 to 8, wherein the auxiliary testing device is provided at each of two ends of the multi-core cable to be tested, wherein the auxiliary testing device is provided at an end of the multi-core cable not required to be connected to the multimeter and the insulation resistance tester, and is used for isolating or shorting the core wires of the multi-core cable at the end.
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| CN201710727580.8A CN107329038B (en) | 2017-08-23 | 2017-08-23 | Multi-core cable test auxiliary device and test method |
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| CN103675586A (en) * | 2013-09-26 | 2014-03-26 | 北京电子工程总体研究所 | Testing method and system for long-distance multi-core cable |
| CN204359820U (en) * | 2014-11-20 | 2015-05-27 | 中国直升机设计研究所 | A kind of cable auxiliary test unit |
-
2017
- 2017-08-23 CN CN201710727580.8A patent/CN107329038B/en active Active
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| US3820011A (en) * | 1972-05-18 | 1974-06-25 | Int Standard Electric Corp | Fluid immersion conductor insulation tester |
| US4206632A (en) * | 1979-01-23 | 1980-06-10 | Hirosuke Suzuki | Liquid detecting device |
| CN2709982Y (en) * | 2004-07-14 | 2005-07-13 | 上海电缆研究所 | Cable test table with separate channel |
| CN101221207A (en) * | 2007-01-12 | 2008-07-16 | 北京北方微电子基地设备工艺研究中心有限责任公司 | Multi-core cable detecting device and method thereof |
| CN103675586A (en) * | 2013-09-26 | 2014-03-26 | 北京电子工程总体研究所 | Testing method and system for long-distance multi-core cable |
| CN204359820U (en) * | 2014-11-20 | 2015-05-27 | 中国直升机设计研究所 | A kind of cable auxiliary test unit |
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| CN107329038A (en) | 2017-11-07 |
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