UNE-EN 50387-2003 PDF

Full title and description

STB UNE-EN 50387:2003 - "Installation of cables with extruded insulation and their accessories for rated voltages from 3,6/6 kV up to 20,0/35 kV — Test methods and requirements for terminations and joints (as adopted nationally)". This standard specifies requirements and test methods for electrical joints and terminations used with medium and high voltage power cables with extruded insulation.

Abstract

This standard (UNE-EN 50387:2003) defines the performance requirements and type test procedures for joints and terminations fitted to power cables with extruded insulation for rated voltages from 3.6/6 kV up to 20.0/35 kV. It covers electrical, mechanical and thermal tests intended to verify the correct functioning, safety and durability of accessories under normal and abnormal conditions. The document is an adoption of the EN 50387 series into the national catalogue (STB/UNE designation) and is intended for manufacturers, test laboratories and utilities to ensure compatibility and reliability of cable accessories.

General information

• Status: National adoption of EN standard (designated STB UNE-EN 50387:2003)
• Publication date: 2003
• Publisher: National standards body (UNE / STB national adoption of EN 50387)
• ICS / categories: 29.120 (Electric cables) and 29.080.01 (Insulated cables) / Electrical power engineering
• Edition / version: 2003 (first national adoption of EN 50387 series)
• Number of pages: Typically 20–40 pages (varies by national publication formatting)

Scope

The standard applies to joints and terminations for power cables with extruded insulation for rated voltages from 3.6/6 kV up to 20.0/35 kV. It specifies the type tests, routine tests and sample tests necessary to demonstrate compliance with electrical, mechanical and thermal performance requirements. It covers insulation coordination, dielectric tests, partial discharge limits, temperature-rise tests and mechanical strength criteria, as well as requirements for materials, marking and documentation related to cable accessories.

Key topics and requirements

• Definition of accessory types (joints, terminations) and their intended voltage classes.
• Type test procedures: dielectric withstand tests, power-frequency voltage tests, impulse tests, and partial discharge measurement limits.
• Temperature-rise and thermal stability requirements under rated current.
• Mechanical tests: tensile and bending tests for terminations and joints, sealing and mechanical integrity.
• Environmental and aging tests: humidity, heat cycling and resistance to thermal and mechanical aging.
• Material and construction requirements, including insulating and semiconducting layers and screens.
• Marking, documentation and information to be supplied by the manufacturer (ratings, installation instructions, test certificates).

Typical use and users

Used by manufacturers of cable accessories, electrical testing laboratories, utility and transmission network engineers, installation contractors and certification bodies. It is applied when designing, type-testing and qualifying joints and terminations for medium- and high-voltage cable systems and when specifying procurement and acceptance tests for cable accessory installations.

Related standards

Related standards include the EN 50393 and EN 50395 series covering power cables with extruded insulation, IEC/EN standards for cable accessories and test methods (such as IEC 60840, IEC 62067 for higher voltage cables), and national adoption variants. Standards for partial discharge measurement, dielectric testing and thermal testing for power cable systems are also relevant.

Keywords

cable accessories, joints, terminations, extruded insulation, medium voltage, high voltage, type tests, dielectric test, partial discharge, temperature-rise, EN 50387, UNE-EN

FAQ

Q: What is this standard?

A: STB UNE-EN 50387:2003 is the national adoption of the European standard EN 50387 published in 2003 that sets out test methods and requirements for terminations and joints for power cables with extruded insulation for rated voltages from 3.6/6 kV up to 20.0/35 kV.

Q: What does it cover?

A: It covers type, routine and sample tests for electrical, mechanical and thermal performance of cable joints and terminations, including dielectric withstand, partial discharge limits, temperature-rise tests, mechanical integrity and environmental aging tests, plus marking and documentation requirements.

Q: Who typically uses it?

A: Manufacturers of cable accessories, testing laboratories, utilities, network operators, installation contractors and conformity assessment bodies use it to design, test, specify and accept cable accessory products and installations.

Q: Is it current or superseded?

A: The 2003 national adoption reflects the EN 50387 edition of that time. Users should verify with the national standards body whether a newer revision or replacement exists or whether harmonized/updated EN/IEC publications have superseded it.

Q: Is it part of a series?

A: Yes. EN 50387 relates to a family of standards on power cables with extruded insulation and their accessories; it should be used in conjunction with related EN/IEC standards covering cable construction, testing and installation.

Q: What are the key keywords?

A: Cable accessories, joints, terminations, extruded insulation, medium voltage, high voltage, type testing, dielectric test, partial discharge, temperature rise.