DANSK DSF/FPREN 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 standard 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 standard may be applicable as a whole or in parts.