DS EN 50069:2005
DS EN 50069:2005 Welded Composite Enclosures Of Cast And Wrought Aluminium Alloys For Gas-Filled High-Voltage Switchgear And Controlgear Pertains to welded composite enclosures of cast and wrought aluminium and aluminium alloy enclosures pressurized with dry air, inert gases, for example sulphur hexafluoride or nitrogen or a mixture of