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.

Full Text

Published Version

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.