目录简介 | Foreword
1 Scope
2 Normative References
3 Terms and Definitions
3.1 General definitions
3.2 Additional definitions for measuring current transformers
3.3 Additional definitions for protective current transformers
4 Normal and Special Service Conditions
4.1 Normal service conditions
4.2 Special service conditions
4.3 Earthquakes
4.4 System earthing
5 Ratings
5.1 Standard values of rated primary currents
5.2 Standard values of rated secondary currents
5.3 Rated continuous thermal current
5.4 Standard values of rated output
5.5 Short-time current ratings
5.6 Limits of temperature rise
6 Design Requirements
6.1 Insulation requirements
6.2 Mechanical requirements
6.3 General requirements of structure
7 Classification of Tests
7.1 Type tests
7.2 Routine tests
7.3 Special tests
8 Type Tests
8.1 Short-time current tests
8.2 Temperature-rise test
8.3 Impulse tests on primary winding
8.4 Wet test for outdoor type transformers
8.5 Radio interference voltage measurement
8.6 Insulation thermal stability test
9 Routine Tests
9.1 Verification of terminal markings
9.2 Power-frequency withstand tests on primary windings and partial discharge measurement
9.3 Power-frequency withstand tests between sections of primary and secondary windings and on secondary windings
9.4 Inter-turn overvoltage test
9.5 Measurement of capacitance and dielectric dissipation factor
9.6 Insulation oil performance test
9.7 Sealing performance test
10 Special Tests
10.1 Chopped impulse test on primary winding
10.2 Mechanical tests
10.3 Transmitted overvoltages measurement
11 Markings
11.1 Terminal markings
11.2 Rating plate markings
12 Packaging, Storage & Transportation and Attachment Paper
12.1 Packaging
12.2 Storage & transportation
12.3 Attachment paper
12.4 Other
13 Additional Requirements for Measuring Current Transformers
13.1 Accuracy class designation for measuring current transformers
13.2 Limits of current error and phase displacement for measuring current transformers
13.3 Extended current ratings
13.4 Type tests for accuracy of measuring current transformers
13.5 Routine tests for accuracy of measuring current transformers
13.6 Instrument security factor
13.7 Marking of the rating plate of a measuring current transformer
14 Additional Requirements for Protective Current Transformers
14.1 Standard accuracy limit factors
14.2 Accuracy classes for protective current transformer
14.3 Limits of errors for protective current transformers
14.4 Type and routine tests for current error and phase displacement of protective current transformers
14.5 Type tests for composite error
14.6 Routine tests for composite error
14.7 Marking of the rating plate of a protective current transformer
15 Additional Requirements for Class PR Protective Current Transformers
15.1 Standard accuracy limit factors
15.2 Accuracy classes for class PR protective current transformers
15.3 Limits of error for class PR protective current transformers
15.4 Type and routine tests for current error and phase displacement of class PR protective current transformers
15.5 Marking of rating plate of class PR current transformers
16 Additional Requirements for Class PX Protective Current Transformers
16.1 Specification of performance for class PX protective current transformers
16.2 Insulation requirements for class PX protective current transformers
16.3 Type tests for class PX protective current transformers
16.4 Routine tests for class PX protective current transformers
Annex A (Informative)
Contrast of Clause and Article of Numbering of this Standard and IEC 60044-1: 2003
Annex B (Informative)
The Technical Differences and Reasons between this Standard and IEC 60044-1: 2003
Annex C (Normative) Protective current transformers
C.1 Vector diagram
C.2 Turns correction
C.3 The error triangle
C.4 Composite error
C.5 Direct test for composite error
C.6 Alternative method for the direct measurement of composite error
C.7 Use of composite error
Annex D (Informative)
The Altitude in IEC 60044-1: 2003 and Rated Insulation Level of Primary Winding
D.1 Altitude
D.2 Rated insulation levels for primary windings
D.3 Power-frequency withstand voltage of primary winding insulation
D.4 Chopped lighting impulse withstand voltages
Annex E (Normative) Chopped lightning impulse withstands voltage
Annex F (Normative) The permissible value of dielectric dissipation factor of transformer
Annex G (Informative) Multiple chopped impulse test |
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