GB 1207-2006 Inductive voltage transformers (Text of Document is in English) - Beijing translation compay

Foreword 1
1 Scope 1
2 Normative References 1
3 Terms and Definitions 2
3.1 General definitions 2
3.2 Additional definitions for single-phase inductive protective voltage transformers 5
4 General Requirements 5
5 Normal and Special Service Conditions 5
5.1 Normal service conditions 5
5.2 Special service conditions 6
5.3 System earthing 7
6 Ratings 7
6.1 Standard values of rated voltages 7
6.2 Standard values of rated output 7
6.3 Standard values of rated voltage factor 8
6.4 Limits of temperature rise 8
7 Design Requirements 9
7.1 Insulation requirements 10
7.2 Short-circuit withstand capability 15
7.3 Mechanical requirements 15
7.4 General requirements of structure 16
8 Classification of Tests 16
8.1 Type tests 16
8.2 Routine tests 17
8.3 Special tests 17
9 Type Tests 17
9.1 Temperature-rise test 17
9.2 Short-circuit withstand capability test 18
9.3 Impulse test on primary winding 18
9.4 Wet test for outdoor type transformers 20
9.5 Radio interference voltage (RIV) measurement 20
9.6 Measurement of excitation characteristic 22
10 Routine Tests 22
10.1 Verification of terminal markings 22
10.2 Power-frequency withstand tests on primary windings and partial discharge measurement 22
10.3 Power-frequency withstand tests between sections and on secondary windings 25
10.4 Measurement of capacitance and dielectric dissipation factor 26
10.5 Measurement of excitation characteristic 26
10.6 Insulation oil performance test 26
10.7 Sealing performance test 26
11 Special Tests 26
11.1 Mechanical tests 26
11.2 Transmitted overvoltage measurement 27
12 Markings 30
12.1 Rating plate markings 30
12.2 Terminal markings 30
13 Packaging, Storage & Transportation and Attachment Paper 35
13.1 Packaging 35
13.2 Storage & transportation 35
13.3 Attachment paper 35
13.4 Other 35
14 Accuracy requirements for single-phase inductive measuring voltage transformers 35
14.1 Accuracy class designation for measuring voltage transformers 35
14.2 Limits of voltage error and phase displacement for measuring voltage transformers 35
14.3 Type tests for accuracy of measuring voltage transformers 36
14.4 Routine tests for accuracy of measuring voltage transformers 36
14.5 Marking of the rating plate of a measuring voltage transformer 36
15 Additional Requirements for Single-phase Inductive Protective Voltage Transformers 37
15.1 Accuracy class designation for protective voltage transformers 37
15.2 Limits of voltage error and phase displacement for protective voltage transformers 37
15.3 Rated voltages for secondary windings intended to produce a residual voltage 37
15.4 Output for windings of residual voltage 38
15.5 Accuracy class for secondary windings intended to produce a residual voltage 38
15.6 Type tests for protective voltage transformers 38
15.7 Routine tests for protective voltage transformers 39
15.8 Marking of the rating plate of a protective voltage transformer 39
Annex A (Informative) 40
Contrast of Clause and Article of Numbering of this Standard and IEC 60044-2: 2003 40
Annex B (Informative) 42
The Technical Differences and Reasons between this Standard and IEC 60044-2: 2003 42
Annex C (Informative) 44
The Altitude in IEC 60044-2: 2003 and Rated Insulation Level of Primary Winding 44
C.1 Altitude 44
C.2 Rated insulation levels for primary windings 44
C.3 Power-frequency withstand voltage of primary winding insulation 45
C.4 Chopped lighting impulse withstand voltages 45
Annex D (Informative) 46
Rated Secondary Voltages of Winding in IEC 60044-2: 2003 46
D.1 Rated secondary voltages 46
D.2 Rated voltages for secondary windings intended to produce a residual voltage 46