Cold shrink joint

The cold-shrink cable gland is pre-expanded with high-performance silicone rubber or EPDM elastomer and relies on the pull-out release of the internal support core material to achieve rapid contraction, which can tightly adhere to the cable without heat source, providing a fully sealed, fully insulated, and fully shielded connection. It is suitable for indoor and outdoor direct burial, cable wells, tunnels and other scenarios of copper/aluminum conductor and single-core/three-core XLPE insulated cables, and meets the requirements of voltage levels such as 12/20 (24) kV, 26/35 (40.5) kV, and 42kV.

Core Benefits:
✅ Fire-free installation, safe and efficient

• No open flame or heat source required, and the pull-out design can be installed in 20 minutes by one person, reducing construction risks.

• Elastomer memory shrinkage adaptive cable outer diameter tolerance (±15%) to avoid partial discharge caused by uneven heat shrinkage.

✅ Triple protection, long-term and reliable

• Electrical protection: built-in semi-conductive layer + insulating layer + outer semi-conductive layer, uniform distribution of electric field, partial discharge ≤5pC.

• Mechanical protection: tear-resistant, weather-resistant outer sheath, UV-resistant, acid-alkali salt spray resistant, applicable temperature -50°C~+90°C.

• Sealing protection: integrated waterproof tape + self-adhesive adhesive layer, waterproof grade IP68, air tightness ≥ 0.3MPa.

✅ Flexible adaptation, cost reduction and efficiency increase

• Single-core joints are suitable for cross-sections of 25-1000mm², three-core joints are suitable for 3×35-3×500mm², and are compatible with copper-aluminum conductor transitions.

• Armoured/unarmoured, single/double-shielded cables are available, with options of insulated recovery (with stress cone) or pass-through construction.