CEI EN 60076-3 : 2015

FOREWORD
INTRODUCTION
1. Scope
2. Normative references
3. Terms and definitions
4. General
5. Highest voltage for equipment and
    rated insulation level
6. Transformers with re-connectable
    windings
7. Dielectric tests
8. Dielectric tests on transformers that
    have been in service
9. Insulation of auxiliary wiring (AuxW)
10. Applied voltage test (AV)
11. Induced voltage tests (IVW and IVPD)
12. Line terminal AC withstand test (LTAC)
13. Lightning impulse tests (LI, LIC, LIN, LIMT)
14. Switching impulse test (SI)
15. Action following test failure
16. External clearances in air
Annex A (informative) - Application guide for
        partial discharge measurements on
        Transformers
Annex B (informative) - Overvoltage transferred
        from the high-voltage winding to a low
        voltage Winding
Annex C (informative) - Information on transformer
        insulation and dielectric tests to be supplied
        with an enquiry and with an order
Annex D (informative) - Neutral insulation voltage
        level calculation
Annex E (informative) - Basis for dielectric tests,
        insulation levels and clearances
Bibliography
Annex ZA (normative) - Normative references to
         international publications with their
         corresponding European publications

Describes the power transformers as defined by and in the scope of IEC 60076-1. It gives details of the applicable dielectric tests and minimum dielectric test levels.