What is IEC 61439-6 Ed.2:2018?

Introduction

IEC 61439-6 Ed.2:2018 is a technical standard that specifies the requirements for low-voltage switchgear and controlgear assemblies. It was published by the International Electrotechnical Commission (IEC) in 2018, outlining the construction, safety, performance, and verification of these assemblies.

Scope and Significance

This technical article aims to provide a thorough understanding of IEC 61439-6 Ed.2:2018 and its importance in the electrical industry. The standard applies to low-voltage switchgear and controlgear assemblies intended for use in industrial, commercial, and residential installations.

The scope of IEC 61439-6 Ed.2:2018 includes aspects like service conditions, design verification, and tests to ensure the proper functioning of these assemblies. Compliance with this standard ensures reliable operation, enhances safety measures, and facilitates interoperability among different manufacturers' products.

Main Requirements

IEC 61439-6 Ed.2:2018 lays down specific requirements for various aspects of low-voltage switchgear and controlgear assemblies. These include:

Construction: The standard defines rules for enclosure type and material, as well as clearances and creepage distances to prevent electrical shock hazards.

Safety: IEC 61439-6 Ed.2:2018 specifies the necessary precautions concerning temperature rise, short-circuit resistance, fault protection, and personnel protection measures.

Performance: The standard outlines requirements for power frequency withstand voltage, degree of protection against external objects and moisture, dielectric properties, heat dissipation, resistance to corrosion, and other performance-related parameters.

Verification: IEC 61439-6 Ed.2:2018 also includes specific requirements for design verification, routine verification, and type tests to ensure compliance with its provisions.

Conclusion

IEC 61439-6 Ed.2:2018 plays a crucial role in ensuring the safety, reliability, and performance of low-voltage switchgear and controlgear assemblies. By adhering to the standard's guidelines, stakeholders in the electrical industry can enhance the quality of their products and provide a safer working environment for end-users.

It is imperative for manufacturers, designers, installers, and inspectors to familiarize themselves with this standard in order to meet the necessary requirements and provide technically advanced electrical solutions.