1Key Takeaways
This International Standard applies to source switching equipment, hereafter referred to as SSE, for household and similar uses, primarily intended to be used for energy efficiency (EE) purposes with local production and/or storage of energy.
SSE is intended to be installed in low voltage prosumer electrical installat…
2Scope / Description
This International Standard applies to source switching equipment, hereafter referred to as SSE, for household and similar uses, primarily intended to be used for energy efficiency (EE) purposes with local production and/or storage of energy.
SSE is 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).
SSE is intended to select and/or combine two power sources (e.g. selected from among grid, local power source, storage units) within an electrical energy management system (EEMS). SSE can also be used for backup supply.
NOTE 1 \"Switching device for islanding\" (SDFI) function is under consideration as additional requirements can be necessary. See also Figure 4 of IEC 60364-8-82:2022.
SSE is part of the fixed electrical installation.
5Citation Network
Referenced by BS EN IEC 62991:2025
CISPR 14
IEC 60068-2-78
IEC 60085
IEC 60127-1
IEC 60212
IEC 60228
IEC 60317-0-1:2013
IEC 60364-8-82:2022
6Frequently Asked Questions
What is BS EN IEC 62991:2025?
BS EN IEC 62991:2025 — Particular requirements for source switching equipment (SSE) is an international standard developed by British Standards Institution (BSI). This International Standard applies to source switching equipment, hereafter referred to as SSE, for household and similar uses, primarily intended to be used for energy efficiency (EE) purposes with local production and/or storage of energy. SSE is...
What does BS EN IEC 62991:2025 cover?
This standard covers: This International Standard applies to source switching equipment, hereafter referred to as SSE, for household and similar uses, primarily intended to be used for energy efficiency (EE) purposes with local production and/or storage of energy. SSE is intended to be installed in low voltage prosumer...
Who should use this standard?
This standard is intended for organizations, professionals, and stakeholders involved in various industries and sectors. It is applicable to manufacturers, service providers, regulatory bodies, and certification organizations.
What is the latest version of BS EN IEC 62991:2025?
The current published version is BS EN IEC 62991:2025, published on 2025-04-30. Always check for amendments or pending revisions.
How do I purchase BS EN IEC 62991:2025?
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