DIN CLC/TS 50537-4 – DRAFT PDF

Draft Document – 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/FprTS 50537-4:2009
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 04/01/2010