UNE-EN 50187:2023 High-voltage switchgear and controlgear - Gas-filled compartments of AC switchgear and controlgear with rated voltages above 1 kV up to and including 52 kV
2023UNE-EN 50187:2023 High-voltage switchgear and controlgear - Gas-filled compartments of AC switchgear and controlgear with rated voltages above 1 kV up to and including 52 kV
1998UNE-EN 50187:1998 GAS-FILLED COMPARTMENTS FOR A.C. SWITCHGEAR AND CONTROLGEAR FOR RATED VOLTAGES ABOVE 1 KV AND UP TO AND INCLUDING 52 KV.