GB/T 4703: Evolution and historical versions
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Capacitor voltage transformers
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PDF similar to GB/T 4703-2007
Basic data | Standard ID | GB/T 4703-2007 (GB/T4703-2007) | | Description (Translated English) | Capacitor voltage transformers | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K41 | | Classification of International Standard | 29.180 | | Word Count Estimation | 62,676 | | Date of Issue | 2007-12-03 | | Date of Implementation | 2008-05-01 | | Older Standard (superseded by this standard) | GB/T 4703-2001 | | Adopted Standard | IEC 60044-5-2004, MOD | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 12 of 2007 (Total No. 112); National Standards Bulletin 2013 No. 2 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard applies to the line and the ground connection between the new single-phase capacitor voltage transformers, the system voltage Um> 72. 5 kV, quite rate 15 Hz ~ 100 Hz. Them as measurement, control and protection equipment in providing low voltage. Capacitor voltage transformer can load Wave accessories for a carrier frequency of 30 kHz ~ 500 kH: Power Line Carrier (PLC) systems. The following three standards form the basis for this standard: GB 1207, concerning electromagnetic voltage transformer, GB/T 19749, for coupling capacitors and capacitive voltage divider, GB/T 7329, on Power Line Carrier (PLC) combined with the device. Measurement functions including measurements indicate that the measurement and billing. | GB/T 4703-2007: Capacitor voltage transformers---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Capacitor voltage transformers
ICS 29.180
K41
National Standards of People's Republic of China
Replacing GB/T 4703-2001
Capacitor Voltage Transformer
(IEC 60044-5.2004, Instrumenttransformers-
Part 5. Capacitorvoltagetransformers, MOD)
Posted 2007-12-03
2008-05-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Introduction Ⅴ
1 Scope 1
2 Normative references 1
3 Terms and definitions 2
3.1 General definitions 2
3.2 Definition of capacitive voltage divider 6
3.3 is defined electromagnetic unit 8
3.4 Carrier is defined in Annex 8
4 General requirements 9
5 Conditions 9
5.1 Classification of environmental conditions 9
5.2 normal conditions of use 9
5.3 Special conditions 10
5.4 System Grounding 10
6 Rating 10
6.1 rated frequency standard value of 10
6.2 rated voltage standard value of 10
6.3 standard rated output value 11
6.4 rated voltage factor standard values 11
6.5 temperature rise limit 11
7 design requirements 12
7.1 Insulation requirements 12
7.2 Other insulation requirements 13
7.3 short-circuit capacity of 16
7.4 Ferroresonance 16
7.5 Electromagnetic emission requirements 17
7.6 the mechanical strength requirements 17
Sealing performance 7.7 capacitive voltage divider and electromagnetic unit 18
8 Test Category 18
8.1 Overview 18
8.2 Type tests 18
8.3 Routine tests 19
19 8.4 Special tests
8.5 Test sequence 1 or 2 units of 19 products
9 Type Test 21
9.1 Temperature Rise Test 21
9.2 frequency capacitance and tanδ measuring 21
9.3 Short Circuit Withstand Ability Test 22
9.4 Impact test 22
9.5 capacitor voltage transformer outdoor wet test 23
9.6 ferromagnetic resonance test 24
9.7 Accuracy test 24
25 9.8 Transient Response Test
9.9 Radio interference voltage test 27
10 Routine tests 28
Sealing performance test 10.1 impregnated liquid capacitive voltage divider 28
Measuring 10.2 frequency voltage withstand test and capacitance, tanδ and partial discharge 28
31 10.3 Inspection terminal markings
Power frequency withstand voltage test 10.4 electromagnetic unit 31
10.5 ferromagnetic resonance test 31
10.6 Accuracy Test 32
10.7 impregnating liquid sealing performance test electromagnetic unit 33
11 special tests 33
11.1 pass over voltage measurement 33
35 11.2 Mechanical strength test
11.3 Determination of the temperature coefficient (TC) 36
Seal test designed 11.4 capacitor unit 36
12 flag capacitor unit 37
12.1 Overview 37
12.2 mark 37
13 terminal flag 37
13.1 Overview 37
13.2 mark 37
Supplemented with 14 measures the capacitor voltage transformer of claim 38
14.1 Accuracy class identity 38
Standard reference range of frequency 14.2 38
14.3 Standard accuracy class 38
14.4 voltage and phase error limits 38
14.5 Accuracy Test 39
15 protection supplementary capacitor voltage transformer of claim 39
15.1 Accuracy class identity 39
15.2 Standard reference frequency range 39
15.3 Standard accuracy class 39
15.4 voltage and phase error limits 39
15.5 Transient Response 40
Requirements 15.6 pairs for generating a residual voltage of the secondary winding 41
16 Nameplate 42
16.1 nameplate 42
16.2 A typical plate example 43
17 pairs of carrier attachment requirements 45
17.1 Overview 45
17.2 drainage coil and pressure limiting means 45
Type carrier attachment test 45 17.3
Routine tests 17.4 carrier annex 46
17.5 nameplate 46
Appendix A (informative) This standard reg number and IEC 60044-5.2004 47 reg number control
Annex B (informative) This standard and IEC 60044-5.2004 technical differences and their reasons 48
Annex C (normative) capacitor voltage transformer circuit diagram illustrating 51
Appendix D (Informative Appendix) IEC 60044-5.2004 standard specifies the altitude correction factor 52
Appendix E (Informative Appendix) IEC 60044-5.2004 standard specifies the standard insulation level 53
High-frequency characteristics Annex F (normative) capacitor voltage transformer 54
Annex G (informative) Transient fault condition response capacitor voltage transformer 55
Figure 1 elevation of temperature correction factor 12
Figure 2 type test (Fig. 2a) and routine tests (Fig. 2b), test sequence flow chart 20
Transient Capacitor Voltage Transformer equivalent circuit of FIG. 3 in response to the test circuit diagram 26
Figure 4 series load 26
5 pure resistance 26
6 radio interference voltage measurement circuit 28
7 partial discharge test measuring circuit 29
8 Another partial discharge measurement test circuit 30
Figure 9 Example 30 balance test circuit
Correction circuit 10 Example 30
11 with an equivalent circuit for the accuracy of the test level 1 CVT error illustrated example 33
Figure 12 is passed through the voltage measurement. the test circuit test arrangement and GIS 33
Figure 13 is passed through the voltage measurement. General test arrangement 34
Figure 14 is passed through the voltage measurement. test waveforms 35
15 single-phase transformer having a secondary winding 37
Figure 16 has two single-phase transformer secondary winding 37
Single-phase transformer 17 having two tapped secondary winding 37
Figure 18 has a residual voltage winding and two secondary windings of the single-phase transformer 38
19 accuracy class 0.2, 0.5 and 1.0 for the capacitor voltage transformer errors 39
Figure 20 Transient response of capacitor voltage transformer 40
21 typical plate example 44
Figure C. Capacitor voltage transformer circuit diagram illustrating 51
Figure C. 2 having a carrier attachment capacitor voltage transformer circuit diagram illustrating 51
Figure D. 1 external insulation altitude correction factor 52
Figure E. 1 standard insulation level 53
Table 1 rated ambient temperature category 9
Table 2 satisfy the accuracy and thermal performance requirements of the standard values of rated voltage factor 11
Table 3 winding temperature rise limit of 12
Table 4 standard insulation level 13
Table 5 partial discharge measurement voltage level and allow 14
Table 6 creepage distance 16
Table 7a Ferroresonance claim 17
Table 7b Ferroresonance claim 17
Table 8 passed over voltage limit 17
Table 9 Static withstand test load 18
Table 10 temperature rise test test voltage of 21
Load range Table 11 Accuracy Test 25
12 unit table, a stack and the overall test voltage capacitive divider 29
Table 13 Ferroresonance test 32
Table 14 Accuracy check point (example) 32
Table 15 way terminal end of a line of application of the test load 36
Table 16 measuring capacitor voltage transformer voltage and phase error limits 38
Table 17 protective capacitor voltage transformer voltage and phase error limits 40
Table 18 transient response level standard value of 41
Table 19 for generating a residual voltage of the capacitor voltage transformer secondary voltage rating of 41
Table 20 nameplate 42
Table 21 is equipped with a carrier annex capacitive voltage transformer nameplate sign additional item 46
Table A. A standard reg number and IEC 60044-5.2004 47 reg number control
Table B. A standard and IEC 60044-5.2004 technical differences and the reasons 48
Foreword
This revised standard adopts IEC 60044-5.2004 "Transformers Part 5. Capacitor Voltage Transformer" (in English).
This standard is based on IEC 60044-5.2004 redrafted. This chapter lists the standard and IEC 60044-5 article number in Appendix A.
2004 "Transformers Part 5. Capacitor Voltage Transformer" control list numbered clauses.
Taking into account China's national conditions, in using IEC 60044-5.2004, the standard of this made some changes to the technical differences have been incorporated into the text
In which they are involved and the terms of the margin of a single vertical line identification. These technical differences are given in Appendix B and their causes
The list for reference.
For ease of use, the standard IEC 60044-5.2004 also made the following editorial changes.
a) according to GB/T 1.1-2000 requirements, and for writing the format has been modified;
b) use a decimal point instead of a decimal comma ",". ",";
c) the physical symbol, indicates subscript R rating and indicates the amount of transformer primary and secondary index P amount subscript S etc.
They are replaced by lowercase letters (associated with our current standard uniform);
d) Remove the IEC foreword;
e) the normative references by the modified content has been adjusted, and the original IEC standard has a corresponding national standards or industry
Replace herein are standard;
f) the introductory phrase in Chapter 3 of GB/T 1.1-2000 requirements had been revised;
g) Table 20 indicates the applicable "×" changes to "○";
h) deleted references.
This standard replaces GB/T 4703-2001 "capacitor voltage transformers."
The main changes compared to "Capacitive Voltage Transformer" This standard and GB/T 4703-2001 as follows.
The main requirements and test a) will have a capacitive voltage divider directly into the text of this standard;
b) rated output is divided into two categories, the output value greatly reduced;
c) increasing the ferromagnetic resonance test in routine tests;
d) The transient response requirements are divided into Level 3, Level 3 requirements higher than the original standard;
e) increasing the transfer of over-voltage limit and testing;
f) increased radio interference voltage requirements and tests;
g) increase the special test category;
h) repetitive frequency voltage withstand test voltage is increased from 75% to 80% of the specified value.
This standard Appendices C and F are normative appendices, Appendix A, Appendix B, Appendix D, Appendix E and Appendix G is an informative annex.
The standard proposed by China Electrical Equipment Industrial Association.
This standard by the National Standardization Technical Committee transformers (SAC/TC222) centralized.
This standard is drafted by. Electric Power Research Institute in Xi'an capacitors, Shenyang Transformer Research Institute.
Participated in the drafting of this standard. Xi'an Electric Power Capacitor Co., Ltd., the legendary Electric (Shenyang) Co., Ltd., Wuhan High Voltage RESEARCH
Study Institute, Nissin Electric (Wuxi) Co., Ltd., Guilin Power Capacitor Factory, Shanghai MWB Transformer Co., Ltd., New Northeast Electric (Jinzhou)
Power Capacitor Co., Ltd., Wuxi Huaneng Power Capacitor Co., Ltd., Tianjin Taylor Power Equipment Technology Co., Ltd., Jiangsu Branch fine cross
Sensor Co., Ltd. Jiangsu source Hertz Transformer.
The main drafters of this standard. Guo Tianxing, room sworn, cotton emperor, Wang Xiaoqi, Yang Yimin, Wang Zengwen, Liu Jing, PAN Hong-mei, Gu Jinsong, Yin Shi
Ann, Deng tower, Zhang Jun, Liu Weihong, Sun Min, MAO Li-xin, Wei Zhaohui.
This standard replaces the standards previously issued as follows.
--- GB 4703-1984; GB/T 4703-2001.
Capacitor Voltage Transformer
1 Scope
This standard applies to the new single-phase capacitor voltage transformer between the line and ground, the system voltage Um≥72.5kV, frequency
15Hz ~ 100Hz. They provide low-voltage measurement, control and protection devices.
Capacitor voltage transformers can be loaded wave accessory for the carrier frequency of 30kHz ~ 500kHz Power Line Carrier (PLC)
system.
The following three criteria constituting the basis of this standard.
--- GB 1207, related to electromagnetic voltage transformer;
--- GB/T 19749, relating to the coupling capacitors and capacitive voltage divider;
--- GB/T 7329, about the power line carrier (PLC) binding equipment.
Measurement functions include measurements indicate that the measurement and billing.
Note 1. Appendix C shows the capacitor voltage transformer circuit diagram showing examples of the applicable standards;
Note 2. If the user needs, Um is 40.5kV capacitive voltage transformer can also be used in this standard.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB 156 standard voltage (GB 156-2003, IEC 60038. 1983, IEC standardvoltages, NEQ)
GB 311.1 insulation with high-voltage power transmission equipment (GB 311.1-1997, neqIEC 60071-1.1993)
GB 1207-2006 electromagnetic voltage transformer (IEC 60044-2.2003, Instrumenttransformers-Part 2. Induc-
tivevoltagetransformers, MOD)
GB/T 2900.15 Electrotechnical terminology transformers, transformers, regulators and reactors (GB/T 2900.15-1997, neqIEC
60050 (421).1990, IEC 60050 (321). 1986)
GB/T 2900.16 Electrotechnical terminology - Power capacitors (GB/T 2900.16-1996, neqIEC 60050 (436).1990)
GB/T 2900.50 Electrotechnical terminology Generation, transmission and distribution of generic terms (GB/T 2900.50-1998, neqIEC 60050
(601). 1985)
GB/T 2900.57 Electrotechnical terminology Generation, transmission and distribution operations (GB/T 2900.57-2002, eqv IEC 60050
(604). 1987)
GB/T 4798 (series) electric and electronic products application environment conditions (idt, eqv or neqIEC 60721 series)
GB/T 5585.1-2005 electrician with copper, aluminum and its alloy bus - Part 1. Copper and copper alloy bus
GB/T 7329 Power Line Carrier binding device (GB/T 7329-1998, neqIEC 60481. 1974)
GB/T 7354-2003 partial discharge measurements (IEC 60270.2000, IDT)
GB/T 11021 heat-resistant electrical insulation classification (GB/T 11021-2007, IEC 60085.2004, IDT)
GB/T 11023 sulfur hexafluoride gas high-voltage switchgear sealing test method
GB/T 11604 high-voltage electrical equipment radio interference test method (GB/T 11604-1989, eqv IEC CISPR18-1.
1982, IEC CISPR18-2. 1986)
GB/T 16927.1 High-voltage test techniques Part 1. General test requirements (GB/T 16927.1-1997, eqv IEC
60060-1. 1989)
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