IEC 62271-1:2017/ISH1:2021 Interpretation Sheet 1 - High-voltage switchgear and controlgear - Part 1: Common specifications for alternating current switchgear and controlgear
2021IEC 62271-1:2017/ISH1:2021 Interpretation Sheet 1 - High-voltage switchgear and controlgear - Part 1: Common specifications for alternating current switchgear and controlgear
2021IEC 62271-1:2021 High-voltage switchgear and controlgear - Part 102: Alternating current disconnectors and earthing switches
2017IEC 62271-1:2017 High-voltage switchgear and controlgear - Part 1: Common specifications for alternating current switchgear and controlgear