Cable pressure resistant test device and cable pressure resistant test method

Abstract

The invention provides a cable pressure resistant test device and a cable pressure resistant test method. The cable pressure resistant test device comprises a pair of test pipes which are vertically arranged on an insulation bracket; plugging structures are arranged at both the lower ends of the test pipes; each plugging structure comprises a cable conductor socket matched with the semi-conductor layer of a cable conductor; a metal electrode cover is arranged at the upper end of one test pipe; an insulating cover is arranged at the upper end of the other test pipe; the metal electrode cover comprises a cover body and an electrode joint; the cover body is arranged at the upper end of a corresponding test pipe; the electrode joint is arranged on the cover body. As the cable conductor socket is arranged at the bottom end of the test pipe, the cable conductor is inserted into the test pipe through the cable conductor socket from the bottom up, different cable layers of the cable conductor correspond to different liquid test media in the test pipe, and cable pressure resistant tests such as a quadruple four-hour cable pressure resistant test can be carried out.

Description

technical field [0001] The invention relates to a test device and a test method, in particular to a cable withstand voltage test device and a cable withstand voltage test method used in a power frequency AC withstand voltage test. Background technique [0002] Power frequency AC withstand voltage test is the most direct method to identify the insulation strength of wires and cables. It is of decisive significance for judging whether the wires and cables are put into operation, and it is also an important means to ensure the insulation level of wires and cables and avoid insulation accidents. The cable withstand voltage test has higher requirements on the cable insulation performance, and it is also the best method to test the cable insulation performance. [0003] However, the current test method has the following problems in actual operation: the two ends of the cable are respectively placed in two test tubes filled with insulating silicone oil. A large amount of charge ac...

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Problems solved by technology

[0003] However, the current test method has the following problems in actual operation: the two ends of the cable are respectively placed in two test tubes filled with insulating silicone oil. A large amount of charge accumulates near the cross-section of the end, causing the local electric field strength near the cross-section to be too large, making it easy to be broken down near the cross-section, causing the test to be interrupted when it is not completed normally

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