GB/T 19212.24-2005 Safety of power transformers, power supply units and similar devices -- Part 24: Particular requirements for transformers for construction sites (English Version)
2020GB/T 19212.24-2020 Safety of transformers, reactors, power supply units and combinations thereof—Part 24:Particular requirements and test for transformers and power supply units for construction sites
2005GB/T 19212.24-2005 Safety of power transformers, power supply units and similar devices -- Part 24: Particular requirements for transformers for construction sites