Marine cable aging performance testing method

Abstract

The invention discloses a marine cable aging performance testing method. The marine cable aging performance testing method comprises the following steps: selecting two common marine cables, namely, anethylene propylene rubber insulation cable and a natural butadiene styrene rubber insulation cable; carrying out a thermal aging test on the cables at the temperatures of 120 DEG C, 140 DEG C and 160DEG C; carrying out a direct-current voltage-withstand test on the aged cable, and measuring the leakage currents and the insulation resistance of the cable in air and water; carrying out judgment and statistics on the changes of the measured leakage currents and insulation resistance of the cable; analyzing the service life trend of the cable by measuring the mechanical performance of the cable;measuring the tensile strength and the breaking elongation rate of the aged cable by using a stretching instrument according to analyzed data; analyzing and arranging measured data, carrying out screening through a comprehensive comparison method, selecting the change trend with the high breaking elongation rate, and selecting and using an evaluation parameter which serves as the service life ofthe cable; and comparing the selected evaluation parameter with the national standard and the actual application, thereby judging whether the cable can continue to work continuously or not.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to a method for testing the aging performance of marine cables. Background technique [0002] As an integral part of the ship's electrical system, marine cables are responsible for important tasks such as providing power and signal transmission for various electrical equipment on board. Marine cables operate in harsh environments all year round, which may easily cause aging or even damage to the insulation layer. Aging cables have become a major safety hazard for the normal operation of ships. Therefore, a test method for the aging performance of marine cables is needed to predict the service life of cables, improve the reliability of ship electrical systems, and avoid catastrophic accidents. However, the existing inspection of the insulation state of marine cables only uses simple visual inspection and insulation resistance test, and these two test methods have limitations, they ca...

AI Technical Summary

Problems solved by technology

Marine cables run in harsh environments all year round, which may easily cause aging or even damage to the insulation layer

Aging cables have become a major safety hazard for the normal operation of ships. Therefore, a test method for the aging performance of marine cables is needed to predict the service life of cables, improve the reliability of ship electrical systems, and avoid catastrophic accidents.

However, the existing inspection of the insulation state of marine cables only uses simple visual inspection and insulation resistance test, and these two test methods have limitations, they can only check the damage of the cable insulation, and cannot find hidden troubles such as the deterioration of the cable insulation performance. And it is impossible to effectively evaluate and judge the insulation state of the cable

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