GB/T 17620-2008 in English

《GB/T 17620-2008带电作业用绝缘硬梯》由TC36（全国带电作业标准化技术委员会）归口，主管部门为中国电力企业联合会。
本标准规定了带电作业用绝缘硬梯的技术要求、试验项目和方法、运输保管等。
本标准适用于10kV~500kV线路带电作业用绝缘硬梯。

1 Scope

This standard specifies technical requirements, test items and methods, transportation and storage of rigid ladders of insulating material for live working.
This standard is applicable to rigid ladders of insulating material used for live working on electrical installations at 10kV to 500 kV.

2 Normative References

The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB 7059 Safety Requirements for Portable Wood Ladders
GB 13398 Insulating Hollow Tubes and Foam-filled Tubes and Solid Rods for Live Working (GB 13398-2008, IEC 60855:1985, MOD; IEC 61235:1993, MOD)
GB/T 14286 Live Working — Terminology for Tools Equipment and Devices (GB/T 14286-2008, IEC 60743:2001, MOD)
DL/T 878 Test Guide of the Insulating Tool for Live Working

3 Terms and Definitions

Foreword II
1 Scope
2 Normative References
3 Terms and Definitions
4 Classification
5 Technical Requirements
6 Type Tests
7 Routine Tests
8 Preventive Test
9 Packaging, Transportation and Storage
Appendix A (Normative) Schematic Diagram of Rigid Ladders of Insulating Material
Appendix B (Normative) Schematic Diagram for Test Device of Rigid Ladders of Insulating Material
Appendix C (Normative) Test Sequence and Test Items of Rigid Ladders of Insulating Material