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Integrated terminal device used for power cable step-by-step puncture test

A breakdown test and power cable technology, applied in the direction of testing dielectric strength, etc., can solve problems such as troublesome operation, achieve convenient loading and unloading process, reduce site occupation, convenient and reliable connection of heating and voltage application

Active Publication Date: 2015-04-22
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this wiring device can only connect one end of the cable. When performing a voltage test, two individual terminals are generally used. It is troublesome to put a point or flashover at the low-voltage end

Method used

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  • Integrated terminal device used for power cable step-by-step puncture test
  • Integrated terminal device used for power cable step-by-step puncture test

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Embodiment Construction

[0029] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0030] An integrated terminal device for step-by-step breakdown tests of power cables, such as figure 1 As shown, it includes a cable connection fixture 6, a high-voltage lead-out rod 8, a housing and a cable heating assembly, wherein the cable connection fixture 6 includes two clamps, and the two clamps are used to clamp the two ends of the cable 1 respectively. The lead-out rod 8 is connected with the cable connection fixture 6, and is used to apply a test voltage to both ends of the cable 1, and the housing includes a high-voltage bushing 10 for accommodating the high-voltage lead-...

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Abstract

The invention relates to an integrated terminal device used for a power cable step-by-step puncture test. The integrated terminal device comprises a cable connection clamp, a high-voltage leading-out rod, a shell and a cable heating assembly, wherein the cable connection clamp comprises two clamping heads used for clamping the two ends of a cable respectively; the high-voltage leading-out rod is connected with the cable connection clamp and used for applying test voltage on the two ends of the cable; the shell is internally provided with an insulation assembly and comprises a high-voltage bushing used for containing the high-voltage leading-out rod and a metal tank used for containing the cable connection clamp and allowing the cable to penetrate through; the cable heating assembly is connected with the cable and used for heating the cable. Compared with the prior art, the mode that the cable connection clamp clamps the two ends of the cable respectively is adopted, so that a cable conductor is closed in the terminal, the equipment is simplified, and connection for heating and voltage application is convenient and reliable.

Description

technical field [0001] The invention relates to an electric power test device, in particular to an integrated terminal device used for step-by-step breakdown tests of power cables. Background technique [0002] At present, the carriers used for power transmission are mainly overhead lines and power cables. With the process of urbanization, the amount of power cables is increasing year by year. In China, 110kV and 220kV cross-linked polyethylene insulation (hereinafter referred to as XLPE) The newly added consumption is more than 3000km, and some megacities (such as Shanghai and Beijing) have begun to use 500kV cross-linked cables. The standards for high-voltage XLPE cables include IEC60840, IEC62067 (International Electrotechnical Commission Standard), GB / T 11017, GB / Z 18890 and GB / T 22078 (National Standard). High-voltage XLPE cable products and laying costs are relatively high, so people in We have been constantly exploring and researching to improve the quality and life ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12
Inventor 范玉军高小庆徐操张屹杨娟娟许强李星辰李海张圣甫
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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