scope:

This standard applies to dry-type power transformers (including auto-transformers) having values of highest voltage for equipment up to and including 36 kV. The following small and special dry-type transformers are not covered: Single-phase transformers rated at less than 1 kVA and polyphase transformers rated at less than 5 kVA; instrument transformers; transformers having no windings with rated voltage Un higher than 1000 V; transformers for static convertors; starting transformers; testing transformers; traction transformers mounted on rolling stock; welding transformers and small power transformers. Electromagnetic compatibility (EMC). Dry-type transformers shall be considered as passive elements in respect to emission of, and immunity to, electromagnetic disturbances. NOTE 1: Report R014-001 describes electromagnetic aspects of transformers and provides som methods of evaluating electric and magnetic fields related to the connections. NOTE 2: Passive elements are not liable to cause electromagnetic disturbances and their performance is not liable to be affected by such disturbances.