BS EN IEC 61558-2-16. Safety of transformers, reactors, power supply units and combinations thereof. Part 2-16. Particular requirements and tests for switch mode power supply units and transformers for switch mode power supply units for general applications|Transformers, Rated power, Electrical insulation, Small-power transformers, Circuits, Rated frequencies, Marking, Dry-type transformers, Clearance distances, Short-circuit currents, Rated voltage, Electrical safety, Electric power systems, Isolating transformers, Electrical equipment, Temperature, Power transformers, Safety isolating transformers