GB/T 19212.6-2013 Safety of transformers, reactors, power supply units and combinations thereof―Part 6: Particular requirements and test for transformer for shavers, power supply units for shavers snd shaver supply units
2017GB/T 19212.16-2017 Safety of transformers,reactors,power supply units and combinations thereof—Part 16: Particular requirements and tests for isolating transformers for the supply of medical locations
2005GB/T 19212.16-2005 Safety of power transformers ,power supply units and similar devices -- Part 16: Particular requirements for isolating transformers for the supply of medical locations