Iec 6193612021 Link May 2026

❌ Using 2010 clearances for systems with arresters – 2021 reduces some gaps.
❌ Ignoring Annex B for soil resistivity modeling – leads to unsafe touch voltages.
❌ Applying AC rules to DC installations – that is IEC 61936-2.
❌ Overlooking fire separation between control buildings and HV equipment – clause 9.3 is strict.

The standard has clarified the requirements for connections for temporary protective earthing (TPE). These are the connection points where maintenance crews attach portable earthing devices to de-energize lines. The 2021 version specifies stricter guidelines on the mechanical strength and placement of these connection points to protect workers during maintenance.

IEC 61936-1:2021 represents a vital evolution in power system standards. By modernizing insulation coordination rules and integrating safety protocols for new types of switchgear and renewable energy sources, the standard ensures that electrical infrastructure remains safe and robust. iec 6193612021 link

For engineers and project managers, compliance with this standard is not merely a regulatory hurdle but a fundamental engineering practice to mitigate risk, ensure longevity of assets, and protect human life.

The 2021 amendment tightened the calculation of touch voltage 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). ❌ Using 2010 clearances for systems with arresters

The safety and reliability of high-voltage power systems are paramount for modern society. IEC 61936-1:2021 provides the "common rules" for the design and erection of electrical power installations, serving as the primary reference for engineers, utilities, and regulators.

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. The 2021 amendment tightened the calculation of touch

IEC 61936 is the international benchmark for Power installations exceeding 1 kV a.c. (alternating current) . It covers the design, erection, and operation of high-voltage electrical substations and power installations.

Yes. Any power installation with AC voltage >1 kV (e.g., 33 kV solar collector substation, 132 kV wind park substation) must conform to IEC 61936-1.