UNE-EN 50216-5:2003/A2:2006 Power transformer and reactor fittings -- Part 5: Liquid level, pressure and flow indicators, pressure relief devices and dehydrating breathers
2008UNE-EN 50216-5:2003/A3:2008 Power transformer and reactor fittings -- Part 5: Liquid level, pressure and flow indicators, pressure relief devices and dehydrating breathers
2006UNE-EN 50216-5:2003/A2:2006 Power transformer and reactor fittings -- Part 5: Liquid level, pressure and flow indicators, pressure relief devices and dehydrating breathers
2003UNE-EN 50216-5:2003 Power transformer and reactor fittings -- Part 5: Liquid level, pressure and flow indicators, pressure relief devices and dehydrating breathers