Lists the characteristics, ratings and also the inspection requirements for magnetic oxide cores of assessed quality for transformers and chokes for power applications intended for professional and industrial applications, excluding broad-band and tuned transformers, and mains frequency power transformers. It selects from the generic specification, IEC 60723-1, and from the basic specification, IEC 60367-1, the appropriate methods of test to be used in detail specifications derived from this specification, in accordance with the corresponding blank detail specification.