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HV Joints & Terminations
Jointing Tech supplies HV cable joints, terminations and accessories for high-voltage power cable systems. Our range includes solutions for high-voltage cable jointing and termination work, with heat-shrink and cold-shrink product options for suitable cable constructions and installation environments.
High-voltage cable accessories must be selected precisely. The joint or termination must match the cable voltage, conductor size, insulation type, screen, armour construction, cable dimensions and equipment interface. Our technical team can help identify suitable products for XLPE and other high-voltage cable applications.
HV cable joints connect, repair or extend high-voltage cable circuits, while HV terminations connect a cable to electrical equipment such as switchgear, transformers or overhead-line systems. Both must restore the required insulation, screen continuity, environmental protection and mechanical integrity of the cable system.
Before selecting an HV accessory, confirm the system voltage, cable manufacturer, cable construction, conductor material and size, core arrangement, insulation type, screen, armour, overall diameter and installation environment. Also establish whether the accessory is required for an indoor, outdoor, underground, substation or equipment-interface application.
Heat-shrink and cold-shrink systems differ in how they expand: cold-shrink systems expand before installation and then recover around the cable after the support core is removed, while heat-shrink systems expand only after heat is applied. The right choice will vary based on the specific cable system, installation requirements, site restrictions and manufacturer's recommendation. Never make changes to one system without checking it with another.
HV cable work is specialist, safety-critical work and should be undertaken by suitably trained and authorised personnel. Use compatible connectors, tooling, preparation materials and installation instructions as specified by the accessory manufacturer and project requirements.
FAQs
What is the difference between an HV joint and an HV termination?
An HV joint connects or repairs cable lengths. An HV termination connects the cable to equipment or another approved interface.
What information is needed to select an HV joint kit?
Provide the voltage, cable type, conductor size, insulation, screen and armour details, dimensions, application and installation environment.
Are heat-shrink and cold-shrink HV accessories interchangeable?
No. Selection must be based on the compatible cable system, product specification and installation conditions.
Can HV accessories be used on any XLPE cable?
No. Even where cables are XLPE, the exact voltage, dimensions, screen and construction details must match the accessory range.
Need help selecting an HV accessory?
Contact Jointing Tech with cable markings, photographs and full application details for technical support.
