UNE-EN 50216-3:2003/A2:2007 Power transformer and reactor fittings -- Part 3: Protective relay for hermetically sealed liquid-immersed transformers and reactors without gaseous cushion
2007UNE-EN 50216-3:2003/A2:2007 Power transformer and reactor fittings -- Part 3: Protective relay for hermetically sealed liquid-immersed transformers and reactors without gaseous cushion
2003UNE-EN 50216-3:2003 Power transformer and reactor fittings -- Part 3: Protective relay for hermetically sealed liquid-immersed transformers and reactors without gaseous cushion.