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GB/T 29305-2012 English PDF

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GB/T 29305-2012: Measurement of the average viscometric degree of polymerization of new and aged cellulosic electrically insulating materials
Status: Valid
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GB/T 29305-2012English394 Add to Cart 3 days [Need to translate] Measurement of the average viscometric degree of polymerization of new and aged cellulosic electrically insulating materials Valid GB/T 29305-2012

PDF similar to GB/T 29305-2012


Standard similar to GB/T 29305-2012

GB/T 31838.7   GB/T 36289.1   GB/T 31034   GB/T 29311   GB/T 29306.2   GB/T 29306.1   

Basic data

Standard ID GB/T 29305-2012 (GB/T29305-2012)
Description (Translated English) Measurement of the average viscometric degree of polymerization of new and aged cellulosic electrically insulating materials
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard K15
Classification of International Standard 29.035.01
Word Count Estimation 20,266
Quoted Standard IEC 60814; ISO 287; ISO 3105
Adopted Standard IEC 60450-2004/Amd 1-2007, IDT
Regulation (derived from) National Standards Bulletin No. 41 of 2012
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 kind of new and aged cellulosic electrically insulating materials viscosity average degree of polymerization (DP) measurement standard method. This standard applies to all cellulosic insulation materials, such as transformers,

GB/T 29305-2012: Measurement of the average viscometric degree of polymerization of new and aged cellulosic electrically insulating materials


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Measurement of the average viscometric degree of polymerization of new and aged cellulosic electrically insulating materials ICS 29.035.01 K15 National Standards of People's Republic of China New and aged cellulosic electrically insulating materials Measuring the viscosity average degree of polymerization (IEC 60450.2004 Al.2007, IDT) Issued on. 2012-12-31 2013-06-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Preface Ⅰ Introduction Ⅱ 1 Scope 1 2 Normative references 1 3 Terms and definitions, symbols 1 4 Principle 3 5 Equipment and Reagent 3 Sample 4 6 7 Test Step 4 8 Test Report 8 Appendix A (normative) copper ethylene diamine solution 10 Preparation (normative) copper ethylene diamine Appendix B 11 Annex C (normative) copper ethylene diamine solution cEn cCu Ratio calibration procedure 13 Annex D (informative) function according to Martin equation [ν] · c multiplied νs Table 14 References 15

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard uses the translation method identical with IEC 60450.2004 A1.2007 "New and cellulosic electrically insulating material sticky after aging Average degree of polymerization of the measure. " Consistency correspondence with this standard Normative documents of the following documents. --- GB/T 462-2008 paper, board and pulp - Determination of water samples (ISO 287. 1985, MOD) The standard proposed by China Electrical Equipment Industrial Association. This standard by the National Electrical insulation materials and insulation systems assessment Standardization Technical Committee (SAC/TC301) centralized. Participated in the drafting of this standard. Suzhou Jufeng Electrical Insulation Systems Co., Ltd., Beijing Electrical Machinery Industry Technology Research Institute of Economy, Shenzhen City, measuring Detection Technology Co., Ltd., Shanghai Electric Equipment detection. The main drafters of this standard. Wang, Xia Yu, Liu Yali, Liu Shufen, Guo Bing, Sun Huashan, ZHAO Chao, Guo Liping.

Introduction

Experience has shown the need to improve test methods and new cellulosic electrically insulating material sticky after aging average degree of polymerization may be repeated speculation. This standard applies to oxidative degradation in the processing stage and outflow generated. Another important factor is the need to ensure that the materials used to dissolve And it is used, which is accelerated outflow. New and aged cellulosic electrically insulating materials Measuring the viscosity average degree of polymerization

1 Scope

This standard specifies a new electrical insulating materials and cellulose sticky after aging average degree of polymerization to standard methods (DPν) measurements. This standard applies to all cellulose insulation, cellulose insulation such as transformers, cables, capacitors and other products used. Test methods described in this standard also applies to after chemical modification can be completely dissolved in the solvent selection kraft intrinsic viscosity measurement. The test method described in this standard when glazed kraft paper for caution. Note. For a sample material, the degree of polymerization of the cellulose molecule is not the same, so the average degree of polymerization as measured by the viscosity may be related by other methods (such as Osmosis or ultra-centrifugation) different values \u200b\u200bmeasured.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. The water content of the oil insulating liquid IEC 60814 Paper and board Determination by Karl Fischer titration with automatic power (Insulatingliquids-Oil-impregnatedpaperandpressboard-Determinationofwaterbyautomatic coulometricKarlFischertitration) ISO 287 paper, board and pulp - Determination of water samples for analysis (Paperandboard-Determinationofmoisture content-Oven-dryingmethod) ISO 3105 glass capillary kinematic viscosity specifications and operating instructions (Glasscapilarykinematicviscometers-Spec- ificationsandoperatinginstructions) 3 Terms and definitions, symbols The following terms and definitions, symbols apply to this document. 3.1 Terms and Definitions 3.1.1 Degree of polymerization of the cellulose molecule degreeofpolymerizationofacelulosemolecule Cellulose molecules of anhydrous glucose monomers number -β- (C6H10O5) is. Note. Figure 1 shows the chemical formula of the cellulose molecule.

1 cellulose molecule chemical structural formula diagram


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