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The official document can be purchased through the IEC Webstore . Local adoptions are available via BSI Knowledge or VDE Publishing .
Power systems within large-scale commercial or industrial buildings.
Organizations such as ANSI (USA), BSI (UK), DIN (Germany), or NSA (Australia) offer the document, often localized with national annexes or forewords.
IEC 61936-1:2021 works in close conjunction with IEC 61936-2 for earthing. The standard reinforces the requirement for Earth Potential Rise (EPR) calculations. It specifies that earthing systems must limit touch and step voltages to safe levels, explicitly accounting for fault currents from modern inverter-based resources (like solar and wind farms), which can have different fault characteristics than traditional rotating machines. iec 6193612021 link
Specific updates to minimum height clearances and safety distances within closed electrical operating areas, including better definitions for snow effects.
IEC 61936-1:2021 is an essential, updated standard for anyone involved in the design or construction of HV systems. By aligning with these 2021 requirements, organizations can ensure their installations are safe, efficient, and up-to-date with global safety standards.
The operator must maintain an including single-line diagrams, earthing plans, coordination curves, and inspection logs for the entire 40-year lifecycle. The official document can be purchased through the
The standard, titled "Power installations exceeding 1 kV AC and 1,5 kV DC – Part 1: AC," is a cornerstone document in electrical engineering. It provides rigorous requirements for the design and erection of high-voltage (HV) electrical power systems. Updated from previous versions, the 2021 edition incorporates modern safety practices, environmental considerations, and technical advancements to ensure safety and functionality.
The official link for IEC 61936-1:2021 is available at the IEC Webstore
. For electrical installations up to 1 kV AC, IEC 60364 (all parts) applies . Organizations such as ANSI (USA), BSI (UK), DIN
( Power installations exceeding 1 kV a.c. – Part 1: General rules )
The IEC 61936-1:2021 standard is useful for: