IEC TS 60076-14:2009
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Power transformers - Part 14: Design and application of liquid-immersed power transformers using high-temperature insulation materials
Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users
16-09-2013
English, Spanish, Castilian
13-05-2009
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Insulation materials
4.1 General
4.2 Ageing and lifetime of insulation materials
4.3 Solid insulation
4.4 Wire enamel insulation
4.5 Insulating liquids
5 Insulation systems
5.1 General
5.2 Insulation system types
5.2.1 Homogeneous high-temperature insulation
system
5.2.2 Hybrid insulation system
5.2.3 Semi-hybrid insulation system
5.2.4 Mixed insulation system
6 Temperature limits
7 Transformer accessories and compatibility
7.1 General
7.2 Bushings
7.3 Tap-changer
7.4 Gasket material
7.5 Tank painting
7.6 Coolers
7.7 Pumps
7.8 Tank and conservator
7.9 Adhesives
7.10 Current transformers
7.11 Temperature gauges and indicators
7.12 Protective relays
7.13 Auxiliary cables
8 Special design considerations
8.1 Short-circuit considerations
8.2 Dielectric requirements
8.3 Temperature requirements
8.4 Overload
8.5 Effects of harmonic currents
8.6 Liquid preservation system
9 Required information
9.1 Information to be provided by the purchaser
9.1.1 Ambient temperatures and loading cycle
9.1.2 Harmonic currents
9.1.3 Other unusual service conditions
9.2 Information to be provided by the manufacturer
9.2.1 Thermal characteristics
9.2.2 Reference temperature
9.2.3 Guarantees
10 Rating plate and additional information
10.1 Rating and warning plates
10.1.1 Rating plate
10.1.2 Warning plate
10.2 Transformer manual
11 Testing
11.1 General
11.2 Requirements for routine, type and special tests
11.2.1 General
11.2.2 Routine tests
11.2.3 Type tests
11.2.4 Special tests
11.3 Temperature-rise test
11.3.1 General
11.3.2 Evaluation of temperature-rise tests for
mixed insulation systems
11.4 Dielectric type tests
12 Supervision, diagnostics, and maintenance
12.1 General
12.2 Transformers filled with mineral insulating oil
12.3 Transformers filled with high-temperature insulating
liquids
Annex A (informative) Calculation of bubble generation
temperature
Annex B (informative) A perspective of transformer
temperatures from Tables 4 and 5
Bibliography
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