35kV Cold Shrink Intermediate Joint

35kV Cold Shrink Intermediate Joint

Product Description

The 35kV Cold Shrink Intermediate Joint represents a critical innovation in medium-voltage power cable splicing, engineered to deliver unparalleled reliability and installation efficiency in demanding electrical networks. Designed for underground distribution systems, industrial complexes, substations, and renewable energy farms, this joint incorporates pre-expanded, high-grade silicone rubber modules retained by removable support cores. Its tool-free installation process requires no heating, flaming, or specialized apparatus—simply position the joint over the prepared cable end and remove the support cores to activate uniform, self-contained radial shrinkage. This ensures a seamless, void-free interface between cable sections, forming an instant and permanent environmental seal that resists moisture, gases, and contaminants.

The joint features an integrated multi-layer stress control system, comprising conductive and semi-conductive shielding layers combined with field-grading components. This advanced architecture ensures smooth electrical field transition across the entire splice region, effectively controlling electrical stresses, eliminating partial discharge, and preserving the long-term dielectric integrity of the cable system. Constructed from premium silicone rubber, the joint maintains exceptional flexibility and resistance to thermal aging, UV exposure, chemical corrosion, and wide temperature fluctuations from -50°C to +50°C. It performs reliably under repeated load cycling, mechanical vibration, and in harsh environments—whether directly buried, installed in ducts, or laid in trenches.

Fully compatible with XLPE-insulated power cables and available in a comprehensive range of conductor sizes, this intermediate joint simplifies system design and reduces inventory complexity. Its compact, pre-assembled construction minimizes installation time and skill requirements while ensuring consistent, error-proof performance. By delivering a maintenance-free service life and eliminating the risks associated with heat-based installation methods, the 35kV Cold Shrink Intermediate Joint offers a durable, sustainable, and cost-effective splicing solution—ideal for utilities, industrial operators, and infrastructure developers seeking to enhance network resilience, reduce lifetime costs, and ensure uninterrupted power distribution.

Design Methods

• This product is made of liquid silicone rubber, compared with solid silicone rubber elasticity is better, better reliability.

• Waterproof shell is made of fiberglass,waterproof glue AB components.

• The shielding lap is made of wraped copper mesh and copper braid and has passed the shielding short-circuit test.

• Factory withstand voltage test 117kV, 5min.

• This product implements the national standard GB/ T12706.4.

Technical Parameter

Product Dimension