Withstand voltage testing device for underground cable laying

Abstract

A withstand voltage testing device for underground cable laying comprises a cable roller used for winding a cable, a roller frame and a swing frame used for preventing uneven winding of the cable. Thecable roller is connected with a winding motor through a speed reducer, and the swing frame is connected with a driving motor through a crank sliding block mechanism. The crank sliding block mechanism is connected with a test ring, the test ring is connected with one test terminal of a pressurization test device, and the other test terminal of the pressurization test device is connected with a wire in the cable; an annular magnet is adsorbed at each of the two ends of the test ring, and iron sand is adsorbed on the annular magnets; and the cable penetrates through the test ring and the innerrings of the annular magnets and is in contact with the iron sand. The device is low in cost, small in occupied area, convenient to test, convenient to lay and construct and high in reliability, and an electric leakage point can be quickly found.

Description

technical field [0001] The invention relates to the technical field of power supply safety, in particular to a withstand voltage test device for laying underground cables. Background technique [0002] Cables should be subjected to withstand voltage tests before laying, especially for cables laid underground. Once leakage occurs, it is difficult to repair and cause huge losses. Most of the cables laid underground are large cables with thick wire diameter, long length and heavy weight. Testing their pressure resistance performance requires a large site and testing equipment, which is impossible to achieve in on-site construction. [0003] At the cable laying site, there is a need for a withstand voltage test device that occupies a small area, is convenient for testing, is convenient for laying and construction, and can quickly find leakage points. Contents of the invention [0004] In order to overcome the deficiencies in the background technology, the present invention di...

AI Technical Summary

Problems solved by technology

[0002] Cables should be tested for withstand voltage before laying, especially for cables laid underground. Once leakage occurs, it is difficult to repair and the loss will be huge

Most of the cables laid underground are large cables with thick wire diameter, long length and heavy weight. Testing their withstand voltage performance requires a large site and testing equipment, which is impossible to achieve in on-site construction.

Images