CEI EN IEC 60076-11 PDF

This part of IEC 60076 applies to dry-type power transformers (including auto-transformers) having values of highest voltage for equipment up to and including 72,5 kV and at least one winding operating at greater than 1,1 kV.

This document does not apply to:

• gas-filled dry-type transformers where the gas is not air;

• single-phase transformers rated at less than 5 kVA;

• polyphase transformers rated at less than 15 kVA;

• instrument transformers;

• starting transformers;

• testing transformers;

• traction transformers mounted on rolling stock;

• flameproof and mining transformers;

• welding transformers;

• voltage regulating transformers;

• small power transformers in which safety is a special consideration.

Where IEC standards do not exist for the transformers mentioned above or for other special transformers, this document may be applicable as a whole or in parts.