This International Standard is applicable to a.c. series capacitor by-pass switches designed for outdoor installation and for operation at frequencies of 50 Hz and 60 Hz on systems having voltages above 52 kV.It is only applicable to by-pass switches for use in three-phase systems.This standard is also applicable to the operating devices of by-pass switches and to their auxiliary equipment.
DS/EN 62271-109:2009 history
2013DS/EN 62271-109/A1:2013 High-voltage switchgear and controlgear - Part 109: Alternating-current series capacitor by-pass switches
2009DS/EN 62271-109:2009 High-voltage switchgear and controlgear - Part 109: Alternating-current series capacitor by-pass switches