PD IEC/TR 62271-305:2009 High-voltage switchgear and controlgear. Capacitive current switching capability of air-insulated disconnectors for rated voltages above 52 kV
2009PD IEC/TR 62271-305:2009 High-voltage switchgear and controlgear. Capacitive current switching capability of air-insulated disconnectors for rated voltages above 52 kV