IN-SITU STUDIES ON CABLE AND OPTICAL FIBRE CABLE INSULATION RESISTANCE AGAINST GROUND

J Chin Soc Corr Pro

2007, Vol. 27

Issue (1): 14-16 DOI:

Research Report

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IN-SITU STUDIES ON CABLE AND OPTICAL FIBRE CABLE INSULATION RESISTANCE AGAINST GROUND

Yonghong Wang;Zhonghui Lu;Yingzhi Li;;;

电信科学技术第五研究所

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Abstract By means of long-term consecutive in-situ measuring insulation resistance against ground of buried cable and optical fibre cable and soil environment factors,the changing rule of insulation quality of cable and optical fibre cable with time was studied.The effect on insulation resistance arising from soil environment changing was discussed.It was observed that insulation resistance against ground of cable with PVC jacket increased from November to April the next year,and it decreased from June to September.There was remarkable negative correlation between fluctuating of insulation resistance and soil temperature and soil humidity.The insulation resistance against ground kept rising gradually as burying time passed by years.The maximum insulation resistance of cable with PE jacket was in the level of about 100 times as much as that of cable with PVC jacket.Experiments indicated that the value of insulation resistance against ground could maintain relatively steady and high if the quality of PE or PVC jacket and the quality of construction were both ensured.

Key words: cable insulation resistance against ground soil environment factors in situ measurement

Received: 08 August 2005

ZTFLH:

TG172.4

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Yonghong Wang; Zhonghui Lu; Yingzhi Li. IN-SITU STUDIES ON CABLE AND OPTICAL FIBRE CABLE INSULATION RESISTANCE AGAINST GROUND. J Chin Soc Corr Pro, 2007, 27(1): 14-16 .

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2007/V27/I1/14

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