Raychem Three Core Terminations (20kV)

Raychem 3-Core Termination 20 kV (MV Cable Termination Kit)

The Raychem 3-core 20 kV termination is an MV cable termination accessory used by Irish utilities, electrical contractors, and industrial cable jointers to terminate three-core screened polymeric MV cable into switchgear, transformers, ring main units, and motor control centres. The kit provides the four jobs every MV termination has to do: electrical stress control at the screen cut, insulation restoration over the conductor, environmental sealing of the cable end, and mechanical support of the lugs and breakout.

Raychem terminations have been the reference for MV polymeric cable accessories on Irish networks for decades. The 20 kV class kits cover the full 17.5 / 20 kV range used in distribution and industrial installations.

What the kit contains and what it does

• Stress-control mastic and tubing: manages the high field at the screen cut and prevents partial discharge inception.
• Insulating sleeves: restore the cable insulation across the lug and onto the cable core.
• Anti-tracking outer sleeves: weather and tracking-resistant outer protection, sized for indoor or outdoor service depending on the kit variant.
• Breakout boot: a polymeric three-leg breakout that seals where the three cores diverge from the cable end.
• Earth braid and constant-force spring: bonds the cable screen to the local earth with a reliable mechanical connection.
• Sealants, mastics, and instructions: everything needed for one termination, packaged as a kit.

Heat-shrink technology gives the installer a high-quality termination without the specialist tooling needed for cold-shrink or push-on types. A torch, the supplied components, and a competent jointer is the recipe.

Compatibility: cables and systems

The Raychem 3-core 20 kV termination is designed for screened polymeric cable, primarily XLPE and EPR insulated MV cable up to 20 kV class. Compatibility is driven by:

• Voltage class: 17.5 / 20 kV system voltage.
• Cable construction: three-core screened polymeric cable, with copper tape or wire screen.
• Conductor size: the right kit covers a defined cross-section range; choose the kit to match the cable being terminated.
• Indoor or outdoor installation: choose the indoor variant for switchgear and transformer rooms, the outdoor variant for pole tops, kiosks, and external terminations.
• Equipment interface: MV switchgear cable boxes, transformer cable boxes, ring main units, motor terminal boxes, and busbar terminations.

What to confirm before you order

Target users and applications

• Utilities and DNO contractors terminating MV distribution cable into switchgear, transformers, and RMUs
• Industrial cable jointers terminating MV cable in pharmaceutical, semiconductor, and data-centre estates
• Renewable site cable contractors terminating collector cable into wind, solar, and BESS substations
• Electrical contractors carrying out MV cable installation, repair, and refurbishment work

Typical applications include MV cable terminations into switchgear cable boxes, transformer terminations, ring main unit cable ends, motor control centre terminations, and replacement of legacy terminations during refurbishment.

Powerpoint Engineering supplies Raychem 3-core terminations alongside Klauke crimping tools and lugs and the cable preparation kit needed to install them correctly first time.

FAQs

Will this kit work on a single-core cable?

No. This kit is for three-core screened polymeric MV cable. For single-core MV terminations, the correct Raychem variant is a single-core 20 kV termination, which uses the same stress-control and insulation principles but a different breakout and earth bonding arrangement.

Indoor or outdoor: which variant do I need?

Indoor variants are sized for switchgear and transformer rooms where weather and UV exposure are not a factor. Outdoor variants include anti-tracking sleeves rated for external service, including pole-top and kiosk installations. Choose based on where the termination physically sits, not just the equipment type.

What conductor cross-section does the kit cover?

Each Raychem kit has a stated conductor size range. Send us your cable type, conductor cross-section, and screen construction and we will confirm the right kit before you order.

To match the right Raychem 3-core 20 kV termination kit to your cable, switchgear interface, and installation environment, request a quote or speak to our team for compatibility advice.