What is IEC 60502-25?

IEC 60502-25 is an international standard that specifies the requirements and testing methods for power cables with extruded insulation and their accessories used for fixed installations in electric power transmission and distribution systems.

Scope and Application

The scope of IEC 60502-25 covers power cables with rated voltages from 1 kV (Um = 1.2 kV) up to 30 kV (Um = 36 kV). It applies to cables designed for indoor or outdoor use, underground or overhead installations, in ducts, trenches, or direct burial. The standard is applicable to both copper and aluminum conductors.

Key Requirements

IEC 60502-25 defines the technical characteristics and performance requirements for power cables, including conductor size, voltage rating, insulation thickness, and mechanical properties. It also specifies tests and acceptance criteria for various aspects such as voltage withstand, conductor resistance, insulation resistance, and bending properties.

In addition, the standard provides guidelines for marking, packaging, transportation, and storage of power cables, ensuring their safe handling and proper identification during installation and maintenance.

Benefits and Significance

Compliance with IEC 60502-25 ensures that power cables meet internationally recognized quality standards, enabling safe and reliable transmission and distribution of electrical energy. Adhering to this standard helps prevent cable failures, which can lead to power outages, equipment damage, and even accidents.

By providing common requirements and test procedures, IEC 60502-25 facilitates international trade and harmonization among different manufacturers and users of power cables. It serves as a reference document for designers, engineers, and regulators, ensuring consistency and interoperability in electrical installations across countries and regions.

In conclusion, IEC 60502-25 plays a vital role in ensuring the safety, performance, and reliability of power cables used in electric power transmission and distribution systems. By following this standard, stakeholders can benefit from improved efficiency, reduced downtime, and enhanced overall system integrity.