. The standard also refers to CIGRE guides and technical brochures including Guide No. 234, Guide No. 276, Technical Brochure No. 214, No. 535, No. 537, No. 805, as well as IEC 62271-208, IEC Guide 51, and IEEE Guide 998.
In front of switchgear panels: minimum 1.0 meter for 1 kV to 36 kV, and 1.2 meters for >36 kV. iec 6193612021 link
: Extended the protection requirements against lightning strokes. 276, Technical Brochure No
The 2021 edition replaced the previous 2010 version, introducing major upgrades based on real-world industry feedback. The following structural modifications ensure alignment with modern power systems: 537, No
Standardizing clearances and insulation levels. Key Changes in the 2021 Edition
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