High voltage switchgear and controlgear. A.C. insulation-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV— 90 стр.
Specification of technical grade sulphur hexafluoride (SF6) and complementary gases to be used in its mixtures for use in electrical equipment— 22 стр.
High-voltage switchgear and controlgear - Part 4: Handling procedures for sulphur hexafluoride (SF6) and its mixtures (IEC 62271-4:2013) (english version)