Resumen (inglés):
This part 2 of IEC 61558 applies to stationary or portable,
single-phase or polyphase, air-cooled safety isolating
transformers, associated or otherwise.
It has the status of a group safety publication in accordance with
IEC Guide 104
This part 2 supplements or modifies the corresponding clauses in
IEC 61558-1,
This Standard replaces Chapter III, Section 1 of IEC 60742.