GB/T 22707-2008 English PDF

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GB/T 22707-2008: Artificial pollution tests on high-voltage insulators to be used on d.c. systems
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 22707-2008	599	Add to Cart	5 days	Artificial pollution tests on high-voltage insulators to be used on d.c. systems	Valid

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Basic data

Standard ID: GB/T 22707-2008 (GB/T22707-2008)
Description (Translated English): Artificial pollution tests on high-voltage insulators to be used on d.c. systems
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: K48
Classification of International Standard: 29.080.10
Word Count Estimation: 26,237
Date of Issue: 2008-12-30
Date of Implementation: 2009-10-01
Quoted Standard: GB/T 16927.1-1997
Adopted Standard: IECTR 61245-1993, MOD
Regulation (derived from): Announcement of Newly Approved National Standards No. 23 of 2008 (No. 136 overall)
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 specifies the artificial contamination test procedure is applicable to DC overhead line insulators, substation insulators and insulator traction lines can also be used to avoid internal damage with a suitable protective device casing and other equipment used for hollow insulators. These procedures apply to a device equipped with a hollow insulator, relevant technical committee should consider the impact of its internal devices and may require use of special protection. This standard applies to the voltage of �� 1000V to �� 800kV HVDC system using outdoors and exposed to the filthy environment porcelain and glass edge Determination of characteristics of the child 's tolerance. These tests can not be directly applied to the organic material of the insulators, composite insulators, insulator coated with grease or a special type of insulator (semiconductor or insulator covered with enamel

GB/T 22707-2008: Artificial pollution tests on high-voltage insulators to be used on d.c. systems

---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.
Artificial pollution tests on high-voltage insulators to be used on dc systems ICS 29.080.10 K48 National Standards of People's Republic of China DC system with artificial pollution tests on high-voltage insulators (IEC /T R61245.1993, MOD) Posted 2008-12-30 2009-10-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Introduction Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 3 4 General test requirements 4.1 Test arrangement 3 4.2 subjects insulator mounting arrangement 3 4.3 Requirements test circuit 4 Salt spray method 4 5 5.1 4 salt solution 5.2 Spray System 5 5.3 Test conditions before the start of the 6 5.4 preprocessor 6 5.5 tolerance test 7 5.6 tolerance test acceptance criteria 7 6 7 solid layer method 6.1 contaminated fluid composition 7 6.2 Key features of inert materials 7 6.3 pollution layer coating 8 6.4 subjects Insulators Contamination measuring 8 6.5 Test Procedure 9 6.6 tolerance test and acceptance criteria 9 7 insulators 9 Withstand 7.1 Determination of the insulator 9 Withstand 7.2 Determination of a given test voltage to the maximum contamination tolerance of 9 7.3 Given the degree of contamination measured at the maximum tolerated voltage 10 7.4 measured at a given degree of contamination withstand voltage of 10 to 50% Uniformity of approach in Appendix A (informative) Check dirt layer 13 Annex B (informative) Additional recommendation on the solid layer method procedures 15 B. 1 dried dirt layer 15 B. Check that the wet fog effect 2 15 B. Input 3 laboratory fog 16 B. 4 tolerance test duration of 16 B. 5 reference to the accompanying salt density (SD) Evaluation 16 Annex C (informative) Artificial pollution tests on test equipment information 17 Appendix D (Informative Appendix) IEC /T R61245.1993 Introduction 19 Annex E (informative) The standard clauses and IEC /T R61245.1993 reg technical differences and their causes 20 Annex F (informative) The standard clauses and IEC /T R61245.1993 21 reg control list 1 On 100mA resistive load measured ripple voltage amplitude map and the actual average 10 Figure 2 voltage drop, and leakage current voltage overshoot 11 Figure 3 Typical fog nozzle structure 11 Figure 4 is inclined insulator test layout 12 Figure A. 1 probe electrode arrangement 13 Figure A. 2 instrument loop 14 Table 1 Salt spray method. correspondence between the salinity of the solution temperature of 20 ℃, volume conductivity and density values \u200b\u200bbetween 5 Correspondence between solution temperature θ 2 between 5 and factor Chou Table 3 kaolin approximate relationship formula between SD and σ20 7 Kaolin Table 4 for a solid layer of liquid sewage main features 8

Foreword

This revised standard adopts IEC /T R61245.1993 "DC system with artificial pollution tests on high-voltage insulators" (in English). This standard is based on IEC /T R61245.1993 redrafted drafting removed IEC /T R61245.1993 in the section number. in Appendix F lists the number of the standard clauses and IEC /T R61245.1993, List of numbers control strip. Taking into account China's national conditions, in using IEC /T R61245.1993, the present standard do some modifications, have been incorporated into the relevant technical difference positive In this paper, and they are involved in the technical provisions margin with a single vertical line identifies the space. Given these technical difference in Appendix E Its list of different reasons for reference. For ease of use, this standard also made the following editorial changes. The term a) "The technical report" to the "standard"; b) use a decimal point instead of a decimal comma ",". ","; c) Remove IEC /T R61245.1993 Foreword; d) In order to understand when ease of use, the IEC /T R61245.1993 introduction as an appendix of data included in Appendix D. The Standard Appendix A, Appendix B, Appendix C, Appendix D, Appendix E and F are informative appendices. The standard proposed by China Electrical Equipment Industrial Association. This standard by the National Standardization Technical Committee Insulators (SAC/TC80) centralized. This standard was drafted. China Electric Power Research Institute, Xi'an Ceramic Institute, State Grid Corporation of Wuhan High Voltage Research Institute. The main drafters of this standard. TRANSACTIONS OF THE Liu Yansheng, Hu Wenqi, Yaojun Rui, Wu Guang Asia. This standard from the implementation date, JB/T 6747-1993 "DC system with artificial pollution tests on high voltage insulators solid layer method" Abolished. This standard was first formulated. DC system with artificial pollution tests on high-voltage insulators

1 Scope

Artificial pollution test procedures specified in this standard applies to DC overhead line insulators, substation insulators and traction lines with insulation Son, can also be used with a cannula suitable protective equipment to avoid internal damage and other equipment used for hollow insulators. These procedures apply When equipped with a hollow insulator in equipment, the relevant technical committees should consider the impact on the internal device and may require special anti-employed Protection devices. This standard applies to a voltage of ± 1000V to ± 800kV DC system used outdoors and exposed to dirty environments porcelain And tolerability characteristics of the glass edge of the sub-determination. These tests can not be directly applied to the organic material of the insulators, composite insulators coated with grease or special types of insulators Insulator (semiconductor or insulator is covered with a glaze of any organic material insulator). Note. For large sample, such as a large wall bushing and transformer, experience has shown that the test results have a greater dispersion.

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/T 16927.1-1997 high voltage test techniques Part 1. General test requirements (eqv IEC 60060-1. 1989)

3 Terms and Definitions

The following terms and definitions apply to this standard. 3.1 Refers to the provisions specified test voltage is applied to the contamination of the sample to a predetermined duration of time, or to a single process composed of flashover occurs. 3.2 U Rao Moment and is being considered as the average of the instant within a time interval between the end of the voltage, the time interval is equal to the whole supply A current cycle of the AC voltage. NOTE. When you are not sure of the supply voltage cycle, this time interval is 20ms. 3.3 The actual average voltage during a single experiment began. 3.4 The actual average amplitude of the ripple voltage ratio (Ur/Ua shown in Figure 1). 3.5 The difference between the actual test voltage and the average voltage (Figure 2). ......

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