CEI EN 60076-1

BILINGUAL

This part of IEC 60076 applies to three-phase and single-phase
power transformers (including auto-transformers) with the exception
of certain categories of small and special transformers such
as:

– single-phase transformers with rated power less than 1 kVA and
three-phase transformers less than 5 kVA;

– transformers, which have no windings with rated voltage higher
than 1 000 V;

– instrument transformers;

– traction transformers mounted on rolling stock;

– starting transformers;

– testing transformers;

– welding transformers;

– explosion-proof and mining transformers;

– transformers for deep water (submerged) applications.

When IEC standards do not exist for such categories of
transformers (in particular transformer having no winding exceeding
1000 V for industrial applications), this part of IEC 60076 may
still be applicable either as a whole or in part.

This standard does not address the requirements that would make
a transformer suitable for mounting in a position accessible to the
general public.

For those categories of power transformers and reactors which
have their own IEC standards, this part is applicable only to the
extent in which it is specifically called up by cross-reference in
the other standard. Such standards exist for:

– reactors in general (IEC 60076-6);

– dry-type transformers (IEC 60076-11);

– self-protected transformers (IEC 60076-13);

– gas-filled power transformers (IEC 60076-15);

– transformers for wind turbine applications (IEC 60076-16);

– traction transformers and traction reactors (IEC 60310);

– converter transformers for industrial applications (IEC
61378-1);

– converter transformers for HVDC applications (IEC
61378-2).

At several places in this part it is specified or recommended
that an 'agreement' should be reached concerning alternative or
additional technical solutions or procedures. Such agreement is
made between the manufacturer and the purchaser. The matters should
preferably be raised at an early stage and the agreements included
in the contract specification.