6193612021 Link | Iec

Enhanced requirements for insulating liquid, grounding systems, and clearances. Scope of IEC 61936-1:2021 The standard applies to: Indoor/Outdoor Substations: High voltage / Low voltage ( ) substations IEC Webstore.

The table below summarises the most important changes: iec 6193612021 link

The official serves as the definitive global benchmark for the design, erection, and verification of high-voltage AC electrical power installations exceeding 1 kV AC . Published by the International Electrotechnical Commission (IEC), this third edition updates critical safety and operational rules for substations, power plants, and industrial sites. Electrical engineers and grid operators can purchase or review official documentation through the IEC Webstore or localized regional versions on the iTeh Standards Portal . Key Technical Aspects of IEC 61936-1:2021 ❌ Using 2010 clearances for systems with arresters

You can access the standard IEC 61936-1:2021 through the IEC website or other authorized distributors. and 1.2 meters for &gt

❌ 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.

In front of switchgear panels: minimum 1.0 meter for 1 kV to 36 kV, and 1.2 meters for >36 kV.