IEC 60076-13:2006

FOREWORD
1 Scope
2 Normative references
3 Terms and definitions
4 Service conditions
5 Electrical characteristics
   5.1 Rated power
   5.2 Highest voltage for equipment
   5.3 Windings
   5.4 Tappings
   5.5 Connection group
   5.6 Dimensioning of the low-voltage winding neutral
        connection
   5.7 Short-circuit impedance
   5.8 Insulation levels and dielectric tests
   5.9 Temperature rise limits at rated power
   5.10 Overload capability
6 Self-protection and disconnection device (SPDD)
   6.1 Functional requirements
   6.2 Coordination principle
   6.3 Mechanical requirements
7 Constructional requirements
   7.1 Liquid preservation system
   7.2 Bushings
   7.3 Dielectric liquid and component materials
   7.4 Disconnection function
8 Information to be supplied by the customer
9 Information to be supplied by the manufacturer
10 Rating plate
11 Tests
   11.1 List and classification of tests (routine, type and
        special tests)
   11.2 Routine tests
   11.3 Type tests
   11.4 Short-circuit test with the self-protection and
        disconnection device disconnected or bypassed
12 Test procedure
   12.1 Measurement of partial discharges
   12.2 Transformer pressure test
   12.3 Switching cycle tests
   12.4 Behaviour test of self-protection and disconnection
        device
Figure
Table

Applies to high-voltage/low-voltage self-protected liquid-filled and naturally cooled transformers for rated power 50 kVA to 1 000 kVA for indoor or outdoor use having a primary winding (high-voltage) with highest voltage for equipment up to 24 kV; a secondary winding (low-voltage) with highest voltage for equipment of 1,1 kV.