Railway applications - Mounted parts of the traction transformer and cooling system - Part 4: Gas and liquid actuated (Buchholz) relay for liquid immersed transformers and reactors with conservator for rail vehicles; German version CLC/TS 50537-4:2010
铁路应用.牵引变压器和冷却系统的安装部件.第4部分:铁路车辆用液浸变压器和带储油柜的电抗器用气体和液体驱动(Buchholz)继电器;德文版CLC/TS 50537-4:2010