Clean joint bay and cable preparation with copper conductor, aluminium foil laminate with aluminium screen wires. Clean and perfectly straight cable installations such as this are unfortunately rare.
Cable jointing skill-sets are not automatically transferred up the voltage classes from 11kV to 33kV and onto 240kV.
Different techniques and technologies are applied to jointing EHV cables including polymeric, paper lead, oil, fluid-filled and transition jointing using ABB, Ericsson, Nexans, Brugg, Pfisterer Ixosil, Silec and Tyco type products.
Should you require any assistance with the selection or specification of cable joints or terminations please do not hesitate to contact us.
Extra-high voltage cables require the power network to go underground due to continuous increase of energy demand, larger transmission capacity, reliability of energy supply, safety and aesthetic issues. Among these cables, XLPE insulation cables are used widely due to their ease of handling, simpler jointing connectivity and maintenance, outstanding electrical features and other benefits.
The basic material for XLPE is polyethylene, which is chemically transformed to cross-linked polyethylene (XLPE) through the cross-link reaction of organic peroxides. The cross-link method for polyethylene was developed in the United States during the 1950’s and has since been continuously developed for application to higher voltage cables. Higher voltages are increasingly being required and now 500kV XLPE cables have already been commercialized by LS Cables.
Further Reading
Subscribe now to our POWER NEWSLETTER– a monthly email circulation packed with news, projects, videos, technical tips, training information, promotions, webinars, career opportunities and white papers.
Includes access to our popular JOINTERS BLOG with contributions from utility professionals, linesmen and cable jointers working on MV HV EHV cables and overhead lines typically at 11kV, 33kV, 66kV and up to 132kV.
15,000+ Subscribers. ➡Â
Published 09 Jan 2026
We’d like to welcome our newest addition to the Thorne and Derrick team! Eva will be joining us as a content creator apprentice at our office in Chester-Le-Street. Eva will bring fresh new ideas to all of our social...
Published 09 Jan 2026
Insulating Matting Recommendations and Guidance for Electrical Safety Guest Blog From COBA Electrical safety is non-negotiable, especially when working around live switchgear, high-voltage panels, and electrical distribution equipment. One critical but sometimes overlooked safeguard is electrical insulating matting, designed...
