Safety of transformers, reactors, power supply units and combinations thereof—Part 4: Particular requirements and tests for ignition transformers for gas and oil burners
Safety of transformers, reactors, power supply units and combinations thereof—Part 15: Particular requirements and tests for variable transformers and power supply units incorporating variable transformers
Safety of transformers, reactors, power supply units and combinations thereof—Part 9: Particular requirements and tests for transformers and power supply units for bells and chimes