GB/T 17620-2008 English PDF

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GB/T 17620-2008: Live working -- Rigid ladders of insulation material
Status: Valid

GB/T 17620: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 17620-2008	419	Add to Cart	3 days	Live working -- Rigid ladders of insulation material	Valid
GB 17620-1998	359	Add to Cart	3 days	General specification for insulating rigid ladder for live working	Obsolete

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GB/T 20632.3   GB/T 20632.2   GB/T 11026.1   GB/T 31034   GB/T 13542.4   GB/T 17622   

Basic data

Standard ID: GB/T 17620-2008 (GB/T17620-2008)
Description (Translated English): Live working -- Rigid ladders of insulation material
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: K15
Classification of International Standard: 13.260
Word Count Estimation: 18,120
Date of Issue: 2008-12-30
Date of Implementation: 2010-02-01
Older Standard (superseded by this standard): GB 17620-1998
Quoted Standard: GB 7059; GB 13398; GB/T 14286; DL/T 878
Adopted Standard: IEC 61478-2003, MOD
Regulation (derived from): Announcement of Newly Approved National Standards No. 25 of 2008 (total 138)
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 live working with the technical requirements of insulating rigid ladder, pilot projects and methods, transportation, storage, etc., This standard applies to 10kV ~ 500kV line live working hard insulation ladder,

GB/T 17620-2008: Live working -- Rigid ladders of insulation material

---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.
Live working.Rigid ladders of insulation material ICS 13.260 K15 National Standards of People's Republic of China Replacing GB 17620-1998 Live working with insulating rigid ladder (IEC 61478.2003, Liveworking-Laddersofinsulatingmaterial, MOD) Posted 2008-12-30 2010-02-01 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 4 Category 2 5 2 Technical Requirements 6 Type Test 3 7 5 factory test 8 Preventive Test 5 9 packaging, transport, storage 6 Appendix A (normative) rigid insulation ladder schematic 7 Appendix B (normative) Hard ladder insulation test schematic arrangement 8 Annex C (normative) Test sequence insulating rigid ladder and pilot projects 13

Foreword

This revised standard adopts IEC 61478.2003 "live working with insulating ladder." This standard and IEC 61478.2003 compared to the main technical differences exist as follows. --- Classification of insulation ladder is not employed IEC 61478.2003 classification, retained the original standard GB 17620-1998 in the classification; --- Using IEC 61478.2003 Content Class 2 insulation ladder, not using IEC 61478.2003 Content Type 1 insulator; --- Adopting IEC 61478.2003 test method based on the Class 2 insulation ladder, increasing the centipede ladder, the word ladder ladders and other hard test Test methods. This standard replaces GB 17620-1998 "live working hard insulating ladder General technical conditions." This standard compared with GB 17620-1998, newly added as follows. --- IEC 60895. Test methods for insulating rigid ladder 2002; Standard Test Method for hard ladder --- centipede ladder, herringbone ladder and so on. The standard proposed by China Electricity Council. This standard by the National Standardization Technical Committee for live working (SAC/TC36) centralized. This standard is mainly drafted by. State Grid Wuhan High Voltage Research Institute, Beijing Power Supply Bureau, the Northwest Power Grid Company. The main drafters of this standard. Wang Linong, Liu Ting, Lin Ping Zeng, Shao Guiwei, Liu Kai, Gao Tianbao, Hu Yi, Xu Ying. This standard was first published in 1998, this is the first revision. Live working with insulating rigid ladder

1 Scope

This standard specifies the live working hard with the insulating ladder of technical requirements, test methods and projects, transportation, storage and so on. This standard applies to 10kV ~ 500kV lines live working hard with the insulating ladder.

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 7059 Safety requirements for portable wooden stepladder GB 13398 live working hollow insulating tube, filled with an insulating foam insulation tubes and solid rods (GB 13398-2008, IEC 60855. 1985, MOD; IEC 61235.1993, MOD) GB/T 14286 live working tools and equipment term (GB/T 14286-2008, IEC 60743.2001, MOD) DL/T 878 live working insulated tools Test Guidelines

3 Terms and Definitions

GB/T 14286 and established the following terms and definitions apply to this standard. 3.1 Ladder constituent units, should contain a minimum of three rungs. 3.2 The first unit of the ladder used to support other segments. Note. You can be the highest or lowest unit ladder. 3.3 Ladder made of metal or synthetic material multi-stitching. 3.4 Fitted with a fixed or removable hook ladder, the hook can be fixed or rotary. 3.5 Splicing can be mounted to the insulating hanging ladder or other additional insulation segment lengthened segment. 3.6 It means connecting the two segments or a splice splice segment and a base segment or segments for substantially linked. 3.7 Mounted on the base section, you can adjust the height difference between the two ladder legs. ......

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