Extended Resin Cable Joints MV | 11kV 33kV Cables
Lovink LoviSil® Extended resin Cable Joint | MV 6/10 (12) kV – 18/30 (36) kV
Product Code: LoviSil® Extended Cable Joint (Module Selection Required)
Lovink LoviSil® Extended Cable Joint is a high-performance medium voltage (MV) straight-through and transition joint designed for distribution networks operating from 6/10 (12) kV up to 18/30 (36) kV. Engineered with an extended outer shell configuration, this joint provides additional bonding space and enhanced environmental sealing — making it particularly suited to 11kV and 33kV utility and industrial cable systems.
The LoviSil® Extended Joint accommodates paper-insulated (PILC / PICAS) and polymeric (XLPE / EPR) cables across a wide range of conductor sizes, core constructions (1-core and 3-core), and armour types. Its modular design allows precise configuration according to cable dimensions, supporting conductor cross-sections up to 1,000 mm² depending on selected joint type (M75, M85, M105 or MK125).
Built around Lovink’s proven liquid silicone insulation technology, the extended joint delivers reliable long-term performance in direct buried, ducted and high-moisture installation environments where enhanced earth bonding length and robust mechanical protection are required.
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The Lovink LoviSil® Extended Cable Joint is a versatile medium voltage straight-through and transition joint developed for modern distribution systems operating at 11kV and 33kV (6/10 (12) kV to 18/30 (36) kV). Its extended body design provides additional internal space for conductor connectors and earth bonding, making it particularly suitable where enhanced mechanical protection and improved moisture sealing are required.
Extended LoviSil® Jointing System
The extended version of the LoviSil® joint builds upon Lovink’s proven liquid silicone insulation technology, offering reliable stress control and long-term dielectric performance. The joint is constructed using a modular system consisting of a base module, cable-specific modules and a resin enclosure, allowing adaptation to a wide range of PILC, PICAS, XLPE and EPR cable constructions.
Unlike compact joint formats, the extended configuration provides increased bonding length and improved installation flexibility, particularly when connecting larger conductor sizes or accommodating complex armour arrangements. The robust outer shell combined with polyurethane resin encapsulation creates a durable barrier against water ingress and aggressive ground conditions, supporting direct burial and duct installations.
Medium Voltage Performance up to 36kV
Designed for utility, infrastructure and industrial cable networks, the LoviSil® Extended Joint supports 1-core and 3-core cables across a broad conductor range up to 1,000 mm² (subject to module selection). Suitable for both new installations and network reinforcement projects, it enables reliable straight-through connections as well as transitions between legacy paper-insulated systems and modern polymeric cables.
Need the right Cable Joints for your MV cables? Speak to our trusted experts to confirm suitability for your 11kV / 33kV class network application (as well as cable type, insulation, sheath/armour construction and dimensions). Thorne & Derrick International provide technical advice, quotations and fast worldwide delivery for MV joints, medium voltage cable accessories and engineered power solutions.
MV Transition Cable Joint – Technical Specifications
Lovink Cable Joints – Selection Guide
Extended Cable Joint – Key Benefits
✔ Purpose-designed Extended MV Straight-Through Cable Joint for connecting same-type or mixed MV cables
✔ Increased joint body length allows enhanced connector accommodation and improved earth bonding arrangements
✔ Suitable for 6/10 (12) kV to 18/30 (36) kV networks including 11kV and 33kV distribution systems
✔ Compatible with XLPE, EPR and selected PILC/PICAS cable constructions
✔ Liquid silicone LoviSil® insulation system provides consistent electrical stress control
✔ Resin-encapsulated outer shell design delivers strong mechanical protection for direct burial applications
✔ Cold-applied modular system eliminates heat-shrink processes and simplifies site procedures
✔ Supports single-core, three single-core and 3-core cable configurations across a broad conductor range
✔ Flexible module selection can optimise stock holding for utilities and contractors
✔ Engineered for long-term reliability in utility, infrastructure and industrial MV installations
Applications
✔ Straight-through jointing of XLPE / EPR and compatible PILC / PICAS medium voltage cables
✔ Extension and repair of MV circuits where additional connector length or bonding space is required
✔ Utility and private 11kV and 33kV distribution networks (subject to correct module selection)
✔ Direct buried cable routes and ducted infrastructure requiring enhanced mechanical protection
✔ Substation feeders, ring main units (RMU) and network reinforcement projects
✔ Industrial facilities, data centres and critical infrastructure with medium voltage power distribution
✔ Renewable energy connections including wind and solar farm MV export circuits
✔ Network reinforcement schemes where robust resin-encapsulated joint protection is required
Transition Cable Joint – Additional Information
LoviSil® Oil Refill Cable Joints for MV distribution networks (commonly 11kV and 33kV class) are engineered specifically for oil-filled and oil-fed paper-insulated cables. The joint construction supports controlled oil management within the cable system while maintaining reliable electrical insulation using fluid silicone technology. The liquid silicone adapts to internal geometry and fills potential voids, helping maintain uniform dielectric performance and reducing the risk of partial discharge within the joint body.
In oil-fed PILC circuits, maintaining oil continuity and pressure balance is critical. The oil refill joint design allows for controlled oil circulation and replenishment while providing effective sealing and mechanical strength. For higher voltage classes up to 36 kV, geometric field control components are integrated to ensure stable electrical stress distribution across the connection area.
✔ Designed for oil-filled PILC cables: supports oil-fed MV distribution circuits
✔ Oil pressure management: maintains system continuity and controlled refill capability
✔ Uniform insulation performance: liquid silicone adapts to joint geometry to minimise void formation
✔ 36 kV capable: suitable for 11kV and 33kV class networks (subject to correct selection)
✔ Robust environmental sealing: resin encapsulation for underground and harsh installations
✔ Utility-focused solution: engineered for legacy oil-fed cable infrastructure and life-extension projects
Lovink Product CatalogueDownload
