DIN EN 50216-2/A1:2003
電力變壓器和電抗器配件.第2部分:帶儲油箱的液浸變壓器和電抗器用氣體和油驅動的繼電器.修改件A1
Power transformer and reactor fittings - Part 2: Gas and oil actuated relay for liquid immersed transformers and reactors with conservator; Amendment A1; German version EN 50216-2:2002/A1:2002