EN IEC 61238-1-3:2019/A11:2019

Overview

EN IEC 61238-1-3:2019/A11:2019 is a European standard published by CENELEC (CLC) that specifies test methods and requirements for compression and mechanical connectors used with power cables. Specifically, the standard targets connectors for power cables with rated voltages above 1 kV (Um = 1.2 kV) up to 36 kV (Um = 42 kV) that are tested on non-insulated conductors. The amendment A11 introduces modifications to the scope, ensuring continued alignment with industry needs and harmonization across the European market.

This document provides critical guidance for manufacturers, installers, and testing laboratories involved in the development, application, and assessment of cable connectors for high- and medium-voltage electrical installations.

Key Topics

• Scope Definition: Covers compression and mechanical connectors for power cables at voltages from above 1 kV up to 36 kV, addressing both copper and aluminium conductors.
• Test Methods: Outlines the type tests required to demonstrate compliance, focusing on mechanical and electrical performance using non-insulated conductors.
• Performance Requirements: Details the necessary parameters such as contact resistance, mechanical strength, and endurance criteria that connectors must meet to ensure reliable connections.
• Harmonization: Aligns European practices with international standards by integrating modifications and updates, facilitating adoption across various national markets.
• Product Identification: Ensures that connectors can be clearly identified and traced for quality control and compliance purposes.
• Voltage Ratings: Emphasizes safe operation for connectors operating above 1 kV up to 36 kV, expanding the scope to reflect advancements in cable technology and market requirements.

Applications

EN IEC 61238-1-3:2019/A11:2019 is crucial for sectors that require dependable performance from compression and mechanical connectors in high-voltage environments:

• Power Distribution Networks: Ensures safe and reliable interconnections in substations and field installations where medium- and high-voltage cables are joined or terminated.
• Industrial Installations: Used in factories, plants, and large commercial facilities where robust cable connectors are necessary for safety and uninterrupted power supply.
• Utilities and Grid Infrastructure: Supports electrical utilities in upgrading, maintaining, and expanding grid systems with connectors that conform to up-to-date safety and reliability standards.
• Renewable Energy Projects: Applied in solar power plants, wind farms, and other renewable installations that require secure, long-term cable connections at medium voltages.
• Testing and Certification: Provides a reference for independent testing laboratories certifying connector compliance according to EU and international regulations.

Related Standards

Compliance with EN IEC 61238-1-3:2019/A11:2019 often requires considering additional standards for a comprehensive approach:

• IEC 61238-1 Series: General requirements and tests for cable connectors used in low- and high-voltage applications.
• EN 50393: Addresses testing of accessories for cables with rated voltages from 1 kV up to 36 kV.
• EN 60228: Specifies conductor classes and requirements for cables used with compression and mechanical connectors.
• EN 50483: Details for overhead line accessories, relevant for aerial power cable accessories and connectors.

By adhering to EN IEC 61238-1-3:2019/A11:2019, organizations ensure the quality, safety, and interoperability of power cable connectors across Europe, supporting efficient energy transmission and reducing risks associated with high-voltage cable connections.