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Why Choose the Heat Shrink Cable Termination Kit?

05 13, 2025
Posted By: Peter

Heat shrink terminations have become the industry standard for medium-voltage cable accessories due to their robust performance in harsh environments. Unlike cold-shrink alternatives, heat shrink kits deliver:

  • Proven Electrical Performance – The ZnO-based stress-control layer smooths electrical fields, reducing partial discharge and extending insulation life.
  • Outstanding Environmental Sealing – Upon heating, the tubing conforms to conductor irregularities, creating a watertight, gas-tight barrier against moisture ingress.
  • Chemical and UV Resistance – Manufactured from non-tracking, UV-stable polyolefin or EVA compounds, these terminations withstand acid rain, salt spray, and prolonged sunlight exposure.
  • Cost-Effective Installation – Field-proven shrink ratios and clear marking simplify positioning; no special molds are required.

 

Key Features at a Glance

Feature

Benefit

ZnO Stress Control Layer

Uniform electric field grading, minimal partial discharge

Cross-linked Polyolefin/EVA

High dielectric strength, low tracking, UV/chemical resistance

Wide Voltage Range

6.35 kV to 42 kV coverage for 1-core and 3-core cables

Operating Temperature

–40 °C to +125 °C, suitable for indoor and outdoor installations

Standards Compliance

IEEE-48 Class I, IEC 60055-1, HD 629.2-S1 certifications

 

Technical Specifications

·Material Composition: Cross-linked polyolefin or EVA with adhesive-lined inner walls for moisture sealing.

·Insulation Thickness: Designed for optimal creepage distances and dielectric strength up to 69 kV in specialized kits.

·Shrink Ratio: Typically 2:1 to 3:1, ensuring tight fit over irregular conductors without excess material.

 

Typical Applications

1、Medium-Voltage Switchgear and Transformers

Reliable terminations in confined indoor cabinets or exposed outdoor enclosures.

 

2、Underground and Overhead Distribution Lines

Robust protection against soil moisture, pollutants, and mechanical stresses.

 

3、Renewable Energy Installations

Solar farm and wind turbine cable terminations requiring long-term stability in varied climates.

 

4、Industrial Plants and Petrochemical Facilities

Corrosion-resistant sealing in chemically aggressive environments.

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