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Transition Cable Joints MV | 11kV 33kV Cables

Lovink Transition Cable Joint for MV Cables 11kV 33kV
Lovink LoviSil Medium Voltage Transition Cable Connection
Paper-Insulated Networks & Modern Polymeric Cable Systems Transition Joint
MV Transition Cable Joint 11kV 33kV
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Lovink LoviSil® Transition Cable Joint | MV 6/10 (12) kV – 18/30 (36) kV

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Product Code: LoviSil® Transition Joint (Module Selection Required)

12kV Transition Cable Joints Available
24kV Transition Cable Joints Available
36kV Transition Cable Joints Available

Lovink LoviSil® Transition Cable Joint is engineered for medium voltage (MV) transition connections between paper-insulated cables (PILC/PICAS) and polymeric cables (XLPE/EPR) from 6/10 (12) kV up to 18/30 (36) kV.
Designed for demanding networks and jointing environments, LoviSil® supports a broad range of MV cable configurations, including 1-core and 3-core constructions, multiple armour types, and conductor sizes up to 1,000 mm² (dependent on module selection). For MV networks commonly referred to as 11kV and 33kV class, the correct joint configuration is selected based on the cable system ratings and dimensions.

SEE TECHNICAL SPECIFICATIONS

MV Joints for Transition Cable Connections XLPE – PILC

The Lovink LoviSil® Transition Cable Joint is a universal MV jointing solution for connecting legacy paper-insulated networks (PILC/PICAS) to modern polymeric cable systems (XLPE/EPR).

Lovink LoviSil

LoviSil® is designed to be efficient to install with pre-installed components and a consistent build-up approach, helping maintain repeatable quality on-site. The modular concept (base module, cable module and resin module) supports stock and project flexibility, while the combined construction of outer shells, polyurethane resin and LoviSil® insulation provides robust protection against moisture and polluted soil conditions. No shrink steps and no soldering are required; only standard tools are used for installation (final selection depends on the cable dimensions and project specification).

6/10 (12) kV – 18/30 (36) kV Cables

Built for utility and industrial environments, the LoviSil® Cable Joints range supports medium voltage installations from 6/10 (12) kV up to 18/30 (36) kV, covering a wide variety of cable designs including 1-core and 3-core cables, different armour constructions and a broad span of conductor sizes. This makes it a strong choice where MV asset life extension, network upgrades or mixed-cable repairs are required.

 

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.

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MV Transition Cable Joint – Technical Specifications

Lovink LoviSil® Transition Cable Joint (MV) – Key Data

Product Type Transition Cable Joint (Medium Voltage)
Voltage Range 6/10 (12) kV – 18/30 (36) kV
Cable Types (Transition) Paper-Insulated (PILC / PICAS) to Polymeric (XLPE / EPR)
Core Types 1-core and 3-core (plus 3 × 1-core configurations)
Conductor Sizes Up to 1,000 mm² (dependent on module and cable dimensions)
Typical MV Networks MV (including 11kV / 33kV class applications, subject to correct selection)
  • Module selection depends on cable construction, insulation type (PILC/PICAS vs XLPE/EPR), sheath/armour and key dimensions.
  • If your cable type is uncommon, bespoke cable modules may be available.
  • Confirm suitability for 11kV / 33kV networks by cable system ratings and the project specification.

Application Range (Module Guide)

Module Cable Type Conductor Size (mm²) Max Crossed Conductors (mm²) Crossed Cores (mm)
M75 Polymeric / Paper (1 core) 95 – 630mm² N/A 72
Polymeric / Paper (3 × 1 core) 35 – 150mm² N/A 33
Polymeric / Paper (3 core) 35 – 150mm² 35 – 120 72
M85 Polymeric / Paper (1 core) 800 – 1,000mm² N/A 82
Polymeric / Paper (3 × 1 core) 95 – 240mm² N/A 38
Polymeric / Paper (3 core) 95 – 240mm² 95 – 185 82
M105 Polymeric / Paper (1 core) 800 – 1,000mm² N/A 105
Polymeric / Paper (3 × 1 core) 95 – 400mm² N/A 48
Polymeric / Paper (3 core) 95 – 400mm² 300 105
MK125 Polymeric / Paper (3 × 1 core) 95 – 800mm² N/A 58
Polymeric / Paper (3 core) 95 – 500mm² N/A 120
  • Ranges shown are a practical selection guide; suitability depends on cable outer sheath diameter and selected cable module.
  • Different cable types and uncommon constructions can be catered for by bespoke cable modules (on request).
  • If your requirement is a specific MV system (e.g., 11kV or 33kV class), confirm the correct joint configuration for the cable ratings and construction.

Construction & Installation Notes (MV Jointing)

Protection Concept Outer shells + polyurethane resin + LoviSil® insulation for protection against moisture and polluted soil
Installation Approach Uniform build-up with pre-installed parts for efficient installation
Tools & Method Standard tools; no shrinking or soldering stated for the system concept
Modular System Base module + cable module + resin module to support flexible stock and project requirements
Selection Required Cable insulation (PILC/PICAS vs XLPE/EPR), armour/sheath and key dimensions must be confirmed before supply

For best results in MV jointing, confirm: cable type, conductor size, insulation build, screen/sheath type, armour, outer diameter and installation environment.
This ensures the correct Transition Cable Joint selection for your MV cable system.

Transition Cable Joint – Key Benefits

✔ Universal Transition Cable Joint concept for PILC/PICAS to XLPE/EPR MV cables

✔ Supports a wide range of cable configurations: large and small cross-sections, 1-core and 3-core, different armours

✔ Designed for MV voltage levels up to 36 kV (6/10 (12) kV to 18/30 (36) kV)

✔ Robust protection against moisture and polluted soil: outer shells + polyurethane resin + LoviSil®

✔ Uniform build-up with pre-installed parts supports efficient, repeatable installation

✔ Only standard tools stated; no shrinking or soldering in the system concept

✔ One basic modular concept (base-, cable- and resin-module) can reduce stock complexity

✔ Reliable electrical insulation approach suitable for evolving MV networks and future grids

✔ Bespoke cable modules available for uncommon cable types (on request)

✔ Ideal where MV networks include both legacy paper cables and modern polymeric cables

11kV 33kV Transition Cable Joint

Applications

✔ MV transition jointing between PILC / PICAS and XLPE / EPR cable systems

✔ Medium voltage network upgrades and mixed-cable repairs (legacy paper to polymeric)

✔ Utility distribution networks and private MV networks (incl. 11kV / 33kV class projects subject to selection)

✔ Substations, HV/MV switchrooms and critical power infrastructure

✔ Industrial plants, renewables and site distribution networks using MV cables

✔ Asset life extension programmes for paper-insulated cable circuits

✔ Transition connections where cable types, armours and constructions vary between circuit sections

✔ Projects requiring robust joint protection against moisture and polluted ground conditions

Transition Cable Joint – Additional Information

LoviSil® Transition Cable Joints for MV networks (commonly referenced as 11kV and 33kV class) use fluid silicone (liquid insulation) as the primary insulating medium. Unlike shrink or push-on technologies, the silicone remains liquid, allowing it to search out and fill voids within the joint. This helps deliver consistent insulation to all components
and reduces the likelihood of partial discharges caused by air entrapment. When used on paper-insulated cables (PILC/PICAS), the fluid silicone has characteristics similar to cable grease, supporting the paper insulation by helping prevent it drying out. When used on polymeric cables (XLPE/EPR), the electrical characteristics of fluid silicone can reduce the need for additional core-installed components and related tasks (subject to correct selection).

For 36 kV class cable jointing, LoviSil® joints incorporate geometric field control using filled stress cones. In combination with a silicone sleeve mounted around the connection, this delivers controlled electric field distribution without the need for wrapping, enabling a compact MV joint design.

Fluid Silicone Liquid Insulation - MV Transition Cable Joint

Liquid Silicone Insulation

Fluid silicone remains liquid and can perfectly insulate all parts within the joint by filling potentially damaging voids.
This helps minimise air entrapment and reduces the chance of partial discharges.

Geometric Field Control with Stress Cones - 36 kV Jointing

Field Control Without Wrapping

36 kV class joints can include geometric field control using filled stress cones.
Combined with a silicone sleeve around the connection, this provides controlled field distribution and supports a compact design.

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Mechanical Protection & Testing

Excellent protection is achieved by combining polyurethane resin with injection moulded outer shells (recycled ABS).
Benefits include long-term moisture resistance and full insulation of the joint screen allowing sheath testing.
Systems are stated as tested to IEEE 404 and HD 629 (CENELEC), including a test executed at 2 bar water pressure.

✔ Reliable power supply: fluid silicone provides primary insulation and fills voids to protect against electrical stress

✔ PILC/PICAS compatibility: silicone characteristics can help prevent paper insulation drying out

✔ Polymeric compatibility: silicone electrical properties can minimise the need for additional core-installed components (selection dependent)

✔ Cost savings: strong TCO proposition based on reliability and long service history (stated ~30 years field experience, low failure rate)

✔ Easy installation: intuitive sequence, identifiable components, transparent inner joint aiding visual control and filling indication

✔ Flame-free approach: no soldering or shrinking stated, supporting petrochemical and mining requirements where flame-free installation is often preferred

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Data Sheets