WG 21 - TC 14/WG 21

Provides information to users about specific topics related to industrial and HVDC converter transformers with design, construction, testing and operating conditions differing from conventional transformers used in power systems. Also provides manufacturers with the technical background that forms the basis for the principles used within IEC 61378-1 and IEC 61378-2. Supplements the information provided in IEC 60076-8.

This part of IEC 61378 applies to oil-immersed three-phase and -single-phase convertor transformers for use in HVDC power transmission. It applies to transformers having two, three or multiple windings. This standard does not apply to convertor transformers for industrial applications (see IEC 61378-1) and to convertor transformers for traction applications (see IEC 60310).