NF C64-471-104*NF EN 62271-104:2015 High-voltage switchgear and controlgear - Part 104 : alternating current switches for rated voltages higher than 52 kV
2015NF C64-471-104*NF EN 62271-104:2015 High-voltage switchgear and controlgear - Part 104 : alternating current switches for rated voltages higher than 52 kV