NF C64-471-107:2006 High Voltage switchgear and controlgear - Part 107 : alternating current fused circuit-switchers for rated voltages above 1 kV up to and including 52 kV.
2006NF C64-471-107:2006 High Voltage switchgear and controlgear - Part 107 : alternating current fused circuit-switchers for rated voltages above 1 kV up to and including 52 kV.