The 2021 amendment tightened the calculation of and step voltage . You must now model the fault current split between overhead earth wires, cable sheaths, and deep earth electrodes using software (e.g., CDEGS).
The standard is prepared by (Insulation co‑ordination and system engineering of high voltage electrical power installations above 1,0 kV AC and 1,5 kV DC) and is classified under ICS codes 29.020 (Electrical engineering in general) and 29.080.01 (Electrical insulation in general). It runs to 245 pages and has a stability date of 2028, meaning it is expected to remain current until at least that year.
in factories or commercial premises.
: Agencies like ANSI (United States), BSI (United Kingdom), or DIN (Germany) provide localized or adopted versions (e.g., BS EN IEC 61936-1:2021). If you need help implementing this standard, let me know: What nominal voltage level is your project using? Are you designing an indoor or outdoor substation?
Re-check all physical layouts against the updated tables in Section 5. iec 6193612021 link
If you want, I can:
Whether you are looking for the direct to purchase the standard or an in-depth understanding of its requirements, this guide covers key aspects of the standard as of June 2026. What is IEC 61936-1:2021? The 2021 amendment tightened the calculation of and
Control cables must be physically separated from power cables by a minimum of 0.3 meters or a metallic partition to prevent induced voltages.
IEC 61936-1:2021 applies to the (construction) of electrical power installations in AC systems with: It runs to 245 pages and has a
If you typed into a search engine, you are likely looking for the official documentation or download link for the IEC 61936 series , specifically concerning the 2021 edition of one of its parts.