DS EN 50187:1996
DS EN 50187:1996 Gas-Filled Compartments For A.C. Switchgear And Controlgear For Rated Voltages Above 1 Kv Up To And Including 52 Kv Pertains to compartments pressurized at a maximum pressure of 3 bar (gauge) and with a maximum pressure x volume of 2000 bar/litres with inert gases, for example sulphur hexafluoride or nitrogen or a