Description

Raychem Heat Shrink Medium Voltage (MV) Terminations are pre-engineered cable accessory systems used for terminating medium-voltage power cables, typically in the range of 3.6 kV to 36 kV. These terminations are designed to provide reliable electrical insulation, stress control, environmental sealing, and mechanical protection at the cable ends where they connect to transformers, switchgear, motors, or overhead lines.

The system uses heat-shrinkable polymeric tubing and molded components that shrink tightly around the cable when heated. This creates a durable, moisture-resistant, and electrically stable termination. Raychem MV terminations are widely used in utility networks, industrial plants, substations, renewable energy projects, and infrastructure installations because of their proven long-term performance under electrical, thermal, and environmental stresses.

Main Features :

• Suitable for indoor and outdoor applications
• Applicable for XLPE, EPR, EPDM, and paper-insulated cables
• Available for single-core and three-core cables
• Immediate energization after installation
• Excellent resistance to UV radiation, tracking, moisture, and pollution
• High dielectric strength and reliable stress control
• Long shelf life with low maintenance requirements
• Quick and simple installation using standard heating tools

Construction Components :

A typical Raychem MV heat shrink termination kit includes:

• Stress control tubing
• Anti-tracking insulation tubing
• Breakout boots
• Rain sheds (for outdoor terminations)
• Sealant mastics and adhesive components
• Lug sealing sleeves
• Installation instructions and accessories

These components work together to control the electric field at the screen cut area, prevent partial discharge, and protect against environmental contamination.

Technology Used :

Raychem MV terminations use advanced stress control technology:

• Conventional resistive stress control systems
• Zinc oxide (ZnO)-based stress grading technology in next-generation terminations

The stress control system minimizes electrical stress concentration at the insulation screen cutback, improving operational reliability and service life.

Standards and Testing :

Raychem MV terminations conform to major international standards including:

• IEC 60502-4
• IEEE 48
• CENELEC HD 629.1
• IS 13573-2

The products are tested for:

• AC and DC voltage withstand
• Partial discharge performance
• Impulse voltage withstand
• Humidity resistance
• Salt fog performance
• Load cycling and thermal endurance

Advantages ;

• Compact and lightweight design
• High reliability in harsh environments
• Reduced installation time
• Suitable for polluted and coastal regions
• Improved safety and insulation integrity
• Compatible with a wide range of cable sizes and connector types

Typical Applications :

• Power distribution systems
• Switchgear terminations
• Transformer connections
• Renewable energy plants
• Industrial electrical networks
• Utility substations
• Mining and infrastructure projects