1 Scope
This standard specifies the working mode, minimum safe working distance and composite clearance, minimum effective insulating length of insulating tools, working safety measures, test and preservation of tools, etc.
This standard is applicable to the live overhaul and maintenance of ±500kV DC transmission line with the altitude of 1000m and below.
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 (excluding amending errors in the text), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of the normative document is applicable. For undated references, the latest edition of the normative document applies.
GB/T 2900.55 Electrotechnical Terminology - Live Working (eqv IEC 60050-651:1999)
GB/T 18037 Technical Requirements and Design Guide for Live Working Tools
DL 409 Rules of Safe Operation in Power Industry (Electric Power Line Part)
3 Terms and Definitions
For the purpose of this standard, in addition to the terms and definitions specified in GB/T2900.55, the following ones also apply.
3.1
Live working for DC transmission line
Workings like live overhaul, maintenance and component replacement carried out on the DC transmission line.
Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 General Requirements
5 Technical Requirements
6 Working Tools
7 Working Precautions
8 Test for Tools
9 Transportation and Maintenance of Tools
