Available via national standards bodies such as BSI or SFS . Summary of 2026 Regulatory Status
New requirements for labeling were added for situations where multiple power sources must be disconnected to ensure safety. Gas-Insulated Switchgear (GIS):
The electrical industry is constantly evolving, with new technologies demanding higher safety standards for power distribution and generation. ("Power installations exceeding 1 kV AC and 1.5 kV DC – Part 1: AC") stands as the international benchmark for designing and erecting high-voltage (HV) electrical systems. As the 3rd edition, published in August 2021, this standard supersedes the aging 2010 version, bringing in updated safety clearances, earthing requirements, and modern engineering practices. iec 6193612021 link
The 2021 edition replaces the previous 2010 version with approximately 20 major changes, including:
The primary source for the standard in English, French, and monolingual/bilingual formats. Available via national standards bodies such as BSI or SFS
This standard applies to power installations with AC voltages above 1 kV up to 110 kV (with guidance applicable up to 220 kV and beyond). It replaced the 2014 edition (IEC 61936-1:2014), introducing necessary updates to reflect advancements in switchgear technology, insulation materials, and safety protocols.
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This version constitutes a technical revision that cancels and replaces the previous 2010 edition. Significant changes include: Clarified Scope
The standard continues to evolve. The ISO Central Secretariat has reported a CENELEC amendment, , intended to clarify and adapt requirements for power installations exceeding 1 kV AC and 1.5 kV DC. This highlights that the standard is a living document, with national and regional bodies issuing amendments to address specific concerns or local regulatory requirements. ("Power installations exceeding 1 kV AC and 1
Comprehensive Guide to IEC 61936-1:2021 - Power Installations Exceeding 1 kV AC