DS EN 50216-2:2002
DS EN 50216-2:2002 Power Transformer And Reactor Fittings - Part 2: Gas And Oil Actuated Relay For Liquid Immersed Transformers And Reactors With Conservator Specifies the gas and oil actuated relay (Buchholz relay) for liquid immersed power transformers and reactors with conservator for indoor or outdoor installation.