Overview

IEC 62677-3-102:2018, developed by the International Electrotechnical Commission (IEC), specifies requirements for heat-shrinkable, polyolefin, anti-tracking moulded shapes designed for medium voltage applications. This international standard focuses on materials that deliver insulation, environmental sealing, mechanical protection, and strain relief for power cable terminations, joints, and stop ends. These heat-shrinkable moulded shapes are suitable for use in environments with temperatures ranging from -40 °C to 100 °C, making them ideal for various electrical and industrial applications where durability, safety, and reliability are critical.

Key Topics

Heat-shrinkable Polyolefin Materials The standard covers heat-shrinkable moulded shapes fabricated from polyolefin, which offers anti-tracking properties essential for medium voltage applications, minimizing electrical tracking for enhanced safety.
Performance Criteria Materials conforming to this standard must meet established performance benchmarks for tensile strength, elongation, dimensional stability, and electrical properties. Testing is done under controlled conditions to ensure long-term reliability.
Adhesive Options and Compatibility Shapes can be supplied with or without a pre-coated adhesive. Annex A provides guidance on selecting compatible adhesives and temperature performance to suit specific installation needs.
Quality Control and Testing The document outlines standardized tests focusing on mechanical, electrical, and environmental stability of the heat-shrinkable moulded shapes, supporting consistent quality and performance.
Identification and Designation The standard contains a system for identification and designation, ensuring traceability and helping purchasers specify the required product with clarity.

Applications

Heat-shrinkable, polyolefin, anti-tracking moulded shapes as described in IEC 62677-3-102:2018 are crucial in a variety of medium voltage electrical installation scenarios, including:

Power Cable Terminations and Joints Providing insulation and strain relief for the ends and connections of power cables used in distribution networks.
Environmental Sealing Protecting cable points and connections from moisture, contaminants, and harsh environmental conditions.
Mechanical Protection Offering robust protection against abrasion and mechanical impact for in-field cable assemblies.
Stop Ends and Accessory Sealing Ensuring safe and secure sealing of cable ends and associated accessories in industrial and utility environments.
Compatibility in Network Upgrades Facilitating retrofitting and upgrades in existing medium voltage infrastructure without compromising safety or performance.

These applications help utilities, installers, and engineers manage risks and ensure the reliable operation of medium voltage power systems.

Related Standards

IEC 62677-3-102:2018 references and complements several other international standards that guide the use and testing of electrical insulation and cable accessories, including:

IEC 60502 (all parts) - Power cables with extruded insulation and their accessories for voltages from 1 kV up to 30 kV.
IEC 62677-1 - General requirements for heat-shrinkable low and medium voltage moulded shapes.
IEC 62677-2 - Methods of test for these types of moulded shapes.
EN 50393 - Test methods and requirements for cable accessories for distribution cables.
HD 629 - Test requirements for accessories on power cables of rated voltages up to 36 kV.
IEC 60296 - Fluids for electrotechnical applications, relevant to associated products.
IEC 60757 - Code for designation of colours for product identification.

Practical Value

Implementing IEC 62677-3-102:2018 ensures that heat-shrinkable, polyolefin, anti-tracking moulded shapes meet international performance and safety criteria. Adherence to this standard provides:

Improved operational reliability in medium voltage systems.
Enhanced electrical safety and reduced risk of tracking-related failures.
Simplified procurement and specification with globally recognized designations.
Assurance of product compatibility and long-term performance in demanding environments.

By following the requirements of IEC 62677-3-102:2018, organizations can achieve safe, efficient, and standardized cable terminations, joints, and protective solutions for medium voltage applications.

IEC 62677-3-102:2018 PDF

Technical details

Abstract

Overview

Key Topics

Applications

Related Standards

Practical Value

Related standards

Abstract

Overview

Key Topics

Applications

Related Standards

Practical Value

Related standards

Power cables with extruded insulation and their accessories for rated voltages from 1 kV (Um = 1,2 kV) up to…

Heat shrinkable low and medium voltage moulded shapes - General requirements (IEC 62677-1:2017)

Heat shrinkable low and medium voltage moulded shapes - Part 2: Methods of test

Fluids for electrotechnical applications – Mineral insulating oils for electrical equipment

Code for designation of colours