Abstract
Mechanical stresses from manufacturing always exist in extruded HV cables. These stresses are generated by the temperature gradients created by the temperature decrease after extrusion or by the difference between thermal expansion coefficients of two different materials in contact (for example metal-polymer interface), These stresses are not uniformly distributed in the cable insulation bulk material. Five different HV cables were analyzed with respect to residual mechanical stresses and dielectric breakdown strength. Photoelastic measurements have been carried out and show that residual stresses range from 2.2 to 5.1 MPa and are located near the conductor shield. Breakdown strength measurements with respect to mechanical stresses have also been performed up to the maximum stresses observed.
Sign-in/Register to access full text options 
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 callDisclaimer: 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.
