BS EN IEC 62991:2025 - Particular Requirements for Source Switching Equipment (SSE)

Introducing the BS EN IEC 62991:2025, a comprehensive standard that sets forth the particular requirements for Source Switching Equipment (SSE). This essential document is a must-have for professionals and organizations involved in the design, manufacturing, and implementation of source switching technologies. Released on April 14, 2025, this standard is the latest in ensuring safety, efficiency, and reliability in SSE applications.

Key Features of BS EN IEC 62991:2025

• Standard Number: BS EN IEC 62991:2025
• Pages: 154
• Release Date: April 14, 2025
• ISBN: 978 0 580 89968 3
• Status: Standard

This standard is meticulously crafted to address the specific needs and challenges associated with source switching equipment. It provides detailed guidelines and requirements that ensure the equipment's performance aligns with international safety and quality benchmarks.

Why Choose BS EN IEC 62991:2025?

The BS EN IEC 62991:2025 standard is indispensable for several reasons:

1. Comprehensive Coverage

With 154 pages of in-depth information, this standard covers all aspects of source switching equipment. It provides a thorough understanding of the requirements necessary to achieve optimal performance and safety.

2. Up-to-Date Information

Released in 2025, this standard reflects the latest advancements and innovations in the field of source switching equipment. It ensures that your practices are aligned with the most current industry standards.

3. International Recognition

As part of the IEC (International Electrotechnical Commission) standards, BS EN IEC 62991:2025 is recognized globally. This ensures that your products and practices meet international quality and safety requirements, facilitating easier market entry and acceptance worldwide.

4. Enhanced Safety and Reliability

Safety is paramount in the design and operation of source switching equipment. This standard provides detailed safety requirements and testing methods to ensure that equipment is reliable and safe for use in various applications.

Who Should Use This Standard?

The BS EN IEC 62991:2025 standard is ideal for:

• Manufacturers of source switching equipment seeking to ensure their products meet international standards.
• Engineers and designers involved in the development of SSE technologies.
• Quality assurance professionals responsible for compliance with industry standards.
• Regulatory bodies and certification agencies involved in the approval and oversight of electrical equipment.

Conclusion

The BS EN IEC 62991:2025 standard is an essential resource for anyone involved in the field of source switching equipment. Its comprehensive guidelines and requirements ensure that your equipment is safe, reliable, and compliant with international standards. By adhering to this standard, you can enhance the quality and performance of your products, ensuring they meet the demands of today's dynamic and competitive market.

Invest in the BS EN IEC 62991:2025 standard today and take a significant step towards excellence in source switching equipment.

BS EN IEC 62991:2025

This standard BS EN IEC 62991:2025 Particular requirements for source switching equipment (SSE) is classified in these ICS categories:

• 29.120.40 Switches
• 03.100.70 Management systems
• 27.015 Energy efficiency. Energy conservation in general
• 29.020 Electrical engineering in general

This International Standard applies to Source Switching Equipment, hereafter referred to as SSE(s), for household and similar uses, primarily intended to be used for Energy Efficiency purposes with local production and/or storage of energy. This standard has been drafted following principles of: - IEC guides 118 and 119 for Energy Efficiency; - IEC guide 110 for safety. SSEs are intended to be installed in low voltage prosumer electrical installations (PEI) to deliver the electrical energy: - either to current-using equipment (direct feeding mode or island mode); - or to the grid (reverse feeding mode). SSEs are intended to select and/or combine two power sources (e.g. selected among grid, local power source, storage units) within an Electrical Energy Management system (EEMS). SSEs may also be used for backup supply. NOTE SSEs capable to select more than two sources are under consideration. SSEs are part of the fixed electrical installation. This standard applies to SSEs for operation in: - AC single or multiphase circuits with rated voltages not exceeding 440 V AC, frequencies of 50 Hz, 60 Hz or 50/60 Hz and rated currents not exceeding 125 A. They are intended to be used in installations with prospective short circuit current not exceeding 25 000 A, or - DC circuits. SSE for DC circuits are under consideration (next edition). SSEs may be operated: - manually (M-SSE), or - remotely (R-SSE), or - automatically (A-SSE), or - a combination of the above methods of operation, e.g. manual and remote. SSEs are constructed either as Combined-SSEs (C-SSEs, based on dedicated products suc as circuit breakers, switches or contactors) or Non-Combined SSEs (NC-SSEs). SSEs are intended for use in circuits where protection against electrical shock and over-current according to IEC 60364 is provided, unless the SSE already contains such protective function. SSEs are normally installed by instructed persons (IEC 60050-195:1998, 195-04-02) or skilled persons (IEC 60050-195:1998, 195-04-01). SSEs are normally used by ordinary persons (IEC 60005-195:1998, 195-04-03) and do not require maintenance. The requirements of this standard apply for standard environmental 420 conditions as given in clause 7. They are applicable to SSEs intended for use in an environment with pollution degree 2 and overvoltage categories III according to IEC 60664-1:2020. SSEs have at least a degree of protection IP 20 according to IEC 60529. Additional requirements may be necessary for devices used in locations having more severe environmental conditions. SSEs do not, by their nature, provide an isolation function nor the overcurrent protection. However, isolation and overcurrent protection functions as covered by relevant product standards may be provided by Combined SSEs. In some countries, it is not permitted to have synchronization of local sources with the grid for particular grid conditions, e.g. when fluctuations of the grid voltage or frequency are outside the tolerance limits. This document does not apply to transfer switching equipment (TSE) intended to be used by skilled persons, as covered by IEC 60947-6-1:2021.