Effect of moisture diffusion and heat cycling on low voltage oil-impregnated-paper insulated distribution cables

S. M. Rowland, M. Wang, M. Michel

    Research output: Chapter in Book/Conference proceedingConference contributionpeer-review

    Abstract

    Moisture can play a critical role in the long-term failure of low-voltage oil-impregnated-paper insulated cables. The processes leading to incipient discharges and, over longer periods, to cable failure are considered. Measurements of commercially manufactured cable insulation conductivity are reported with cycling of temperature and ambient moisture levels. Moisture ingress into cable insulation is also directly measured using Karl-Fischer (KF) titration. Rapid increase in cable core temperature is shown to dramatically increase conductivity for a short period. Cycling of moisture exposure is shown to gradually increase insulation conductivity in both wet and dry states. ©2006 IEEE.
    Original languageEnglish
    Title of host publicationAnnual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP|Annu. Rep. Conf. Electr. Insul. Dielectr. Phenom. CEIDP
    Pages237-240
    Number of pages3
    DOIs
    Publication statusPublished - 2006
    Event2006 Conference on Electrical Insulation and Dielectric Phenomena, CEIDP - Kansas City, MO
    Duration: 1 Jul 2006 → …

    Conference

    Conference2006 Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
    CityKansas City, MO
    Period1/07/06 → …

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