IEC 60742:1983 Isolating transformers and safety isolating transformers - Requirements was changed to IEC 61558-1:1997 Safety of power transformers, power supply units and similar - Part 1: General requirements and tests.
IEC 60742:1983 Isolating transformers and safety isolating transformers - Requirements was changed to IEC 61558-2-4:1997 Safety of power transformers, power supply units and similar - Part 2: Particular requirements for isolating transformers for general use.
IEC 60742:1983 Isolating transformers and safety isolating transformers - Requirements was changed to IEC 61558-2-6:1997 Safety of power transformers, power supply units and similar - Part 2: Particular requirements for safety isolating transformers for general use.
IEC 60742:1983 Isolating transformers and safety isolating transformers - Requirements was changed to IEC 61558-2-7:1997 Safety of power transformers, power supply units and similar - Part 2: Particular requirements for transformers for toys.
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