Standard No.:	GB/T 26218.2-2010
English Name:	Selection and dimensioning of high-voltage insulators intended for use in polluted conditions—Part 2:Ceramic and glass insulators for a.c.systems
Chinese Name:	污秽条件下使用的高压绝缘子的选择和尺寸确定　第2部分：交流系统用瓷和玻璃绝缘子
Chinese Classification:	K48    Insulator
Professional Classification:	GB    National Standard
ICS Classification:	29.080.10 29.080.10    Insulators 29.080.10
Issued by:	AQSIQ
Issued on:	2011-1-14
Implemented on:	2011-7-1
Status:	superseded
Superseded by:	GB/T 16434-1996 Enviromental pollution classification and external insulation selection forhigh voltage transmission line,power plant and substation GB/T 5582-1993 External insulation pollution classes of high-voltage electric power equipments
Superseded on:	1994-2-1
Superseding:	GB/T 5582-1993 External insulation pollution classes of high-voltage electric power equipments
Language:	English
File Format:	PDF
Word Count:	5000 words
Price(USD):	120.0
Delivery:	via email in 1 business day

This part of GB/T 26218 is applicable to the selection of ceramic and glass insulators for a.c. systems, and the determination of their relevant dimensions, to be used under polluted conditions. This part gives specific guidelines and principles to arrive at an informed judgment on the probable behavior of a given insulator in certain pollution environments. For the purposes of this part, GB/T 26218.1 applies. The basis for the structure and approach of this part is fully explained in GB/T 26218.1.

Foreword I 1 Scope and Object 2 Normative References 3 Terms, Definitions and Abbreviations 4 Principles 5 Materials 6 Site Severity Determination 7 Determination of the Reference Unified Specific Creepage Distance (RUSCD) 8 Choice of Profile 9 Checking the Profile Parameters 10 Correction of the RUSCD 11 Determination of the Required Minimum Nominal Creepage Distance 12 Confirmation by Testing Appendix A (Informative) Technical Differences between This Part and IEC/TS 60815-2: 2008 as well as the Reasons Bibliography