Deals with all aspects of safety (such as electrical, thermal andmechanical) of:a) Stationary or portable, single-phase or polyphase, air-cooled(natural or forced) isolating and safety isolating transformers;b) Stationary or portable, single-phase or polyphase, air-cooled(natural or forced) separating transformers, auto-transformers,variable transformers and small reactors.Has the status of a group safety publication in accordance with IECGuide 104. This part 1 replaces Chapter I of IEC 60742 and IEC 60989.