OVE TR 62271-307:2017-05
Действует
High-voltage switchgear and controlgear -- Part 307: Guidance for the extension of validity of type tests of AC metal and solid-insulation enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV (IEC/TR 62271-307:2015) (english version)
