BS EN 62271-107:2012 High-voltage switchgear and controlgear. Alternating current fused circuit-switchers for rated voltages above 1 kV up to and including 52 kV
2012BS EN 62271-107:2012 High-voltage switchgear and controlgear. Alternating current fused circuit-switchers for rated voltages above 1 kV up to and including 52 kV
2006BS EN 62271-107:2005 High-voltage switchgear and controlgear - Part 107: Alternating current fused circuit-switchers for rated voltages above 1 kV up to and including 52 kV