1、 IEC/TS 60815-3Edition 1.0 2008-10TECHNICAL SPECIFICATION Selection and dimensioning of high-voltage insulators intended for use in polluted conditions Part 3:Polymer insulators for a.c.systems IEC/TS 60815-3:2008(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SU
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10、re FAQ or contact us:Email:csciec.chTel.:+41 22 919 02 11 Fax:+41 22 919 03 00 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.IEC/TS 60815-3Edition 1.0 2008-10TECHNICAL SPECIFICATION Selection and dimensioning of high-voltage insulato
11、rs intended for use in polluted conditions Part 3:Polymer insulators for a.c.systems INTERNATIONAL ELECTROTECHNICAL COMMISSION RICS 29.080.10 PRICE CODEISBN 2-8318-1015-6 Registered trademark of the International Electrotechnical Commission LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE
12、 AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 TS 60815-3 IEC:2008(E)CONTENTS FOREWORD.3 1 Scope and object.5 2 Normative references.5 3 Terms,definitions and abbreviations.6 3.1 Terms and definitions.6 3.2 Abbreviations.6 4 Principles.6 5 Materials.7 5.1 General information on common polym
13、er housing materials.7 5.2 Issues specific to polymer housing materials under pollution.7 5.2.1 Reduction of creepage distance.7 5.2.2 Extreme pollution.8 6 Site severity determination.9 7 Determination of the reference USCD.9 8 General recommendations for polymer profiles.10 9 Checking of profile p
14、arameters.11 9.1 General remark.11 9.2 Alternating sheds and shed overhang.12 9.3 Spacing versus shed overhang.12 9.4 Minimum distance between sheds.13 9.5 Creepage distance versus clearance.13 9.6 Shed angle.14 9.7 Creepage factor.14 10 Correction of RUSCD.14 10.1 Correction for altitude Ka.14 10.2
15、 Correction for insulator diameter Kad.15 11 Determination of the final minimum creepage distance.15 12 Confirmation by testing.15 Annex A(informative)Background information on pollution induced degradation of polymers.17 Bibliography.20 Figure 1 RUSCD as a function of SPS class.9 Figure 2 Typical“o
16、pen”profiles.10 Figure 3 Typical steep polymeric profile.10 Figure 4 Typical shallow under-ribs on open profile.10 Figure 5 Typical deep under-rib profile.11 Figure 6 Typical“alternating”profiles.11 Figure 7 Kad versus average diameter and illustration of parameters.15 Figure A.1 Operating areas as a function of pollution severity and USCD (for a fixed insulating length).19 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.TS 60815-3
