BS EN 61558-2-9:2003 Safety of power transformers, power supply units and similar products - Particular requirements for transformers for class III handlamps for tungsten filament lamps
2011BS EN 61558-2-9:2011 Safety of transformers, reactors, power supply units and combinations thereof. Particular requirements and tests for transformers and power supply units for class III handlamps for tungsten filament lamps
2006BS EN 61558-1:2005+A1:2009 Safety of power transformers, power supplies, reactors and similar products — Part 1: General requirements and tests
2006BS EN 61558-1:2005 Safety of power transformers, power supplies, reactors and similar products - Part 1: General requirements and tests
1998BS EN 61558-1:1998 Safety of power transformers, power supply units and similar - General requirements and tests
1996BS EN 60742:1996 Isolating transformers and safety isolating transformers - Requirements