Technical specification for fittings of 1000 kV AC overhead transmission line
1 Scope
This document specifies the general requirements, technical requirements, marking, packaging and accompanying documents of fittings for conducting and grounding wires of 1000 kV AC overhead transmission lines, and describes the test methods and judgment criteria.
This document is applicable to the design, manufacture, test and acceptance of fittings for conducting and grounding wires of 1000 kV AC overhead transmission lines.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 93 Single coil spring lock washers, normal type
GB/T 95 Plain washers - Product grade C
GB/T 699 Quality carbon structure steels
GB/T 700 Carbon structural steels
GB/T 1173 Casting aluminium alloys
GB/T 2314 General technical requirements for electric power fittings
GB/T 2315 Specified failure load series and coupling dimensions for electric power fittings
GB/T 2317.4 Test methods for electric power fittings - Part 4: Acceptance inspection for electric power fittings
GB/T 3190 Wrought aluminium and aluminium alloy - Chemical composition
GB/T 3880
(All parts) Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering
GB/T 4437.1 Aluminium and aluminium alloy extruded tubes - Part 1: Seamless tubes
GB/T 5075 Terminology for electric power fittings
DL/T 284 Hot-dip galvanized bolts and nuts for tower and hardware of transmission lines
DL/T 683 Nomenclature for fittings model
DL/T 756 Suspension clamp
DL/T 757 Strain clamp
DL/T 758 Splicing fittings
DL/T 759 Link fittings
DL/T 760.3 Grading ring, shielding ring, grading and shielding ring
DL/T 763 Technical requirements for overhead line helical fittings
DL/T 764 Hexagon head bolts with split pin hole on shank for electric power fittings
DL/T 768.2 Manufacture quality specification for electric power fittings - Part 2: Ferrous metals forgings
DL/T 768.3 Manufacture quality specification for electric power fittings - Part 3: Power fittings stampings
DL/T 768.5 Manufacture quality specification for electric power fittings - Part 5: Aluminium component
DL/T 768.6 Manufacture quality specification for electric power fittings - Part 6: Welding
DL/T 768.7 Manufacture quality specification for electric power fittings - Hot dip galvanized coatings on fabricated iron and steel articles
DL/T 1098 Requirements and tests for overhead line spacers
DL/T 1099 Technical requirements and tests for damper
DL/T 1178 Corona and RIV test methods for fittings of 1000kV AC transmission line
DL/T 1343 Split pins for electric power fittings
DL/T 1372 Technical requirements for jumper of overhead transmission lines
DL/T 2222 Test method for corona of AC transmission line rigid jumpers
YB/T 123 Aluminum-clad steel wire
YB/T 4165 Steel wire strands for vibration damper
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 5075 apply.
4 General requirements
4.1 Appearance and dimensions
4.1.1 The appearance quality and dimensional tolerances of fittings shall meet the requirements of GB/T 2314.
4.1.2 The Specified failure loads and coupling dimensions for link fittings shall meet the requirements of GB/T 2315.
Foreword I
1 Scope
2 Normative references
3 Terms and definitions
4 General requirements
5 Technical requirements
6 Test methods and judgment criteria
7 Marking, packaging and accompanying documents
Technical specification for fittings of 1000 kV AC overhead transmission line
1 Scope
This document specifies the general requirements, technical requirements, marking, packaging and accompanying documents of fittings for conducting and grounding wires of 1000 kV AC overhead transmission lines, and describes the test methods and judgment criteria.
This document is applicable to the design, manufacture, test and acceptance of fittings for conducting and grounding wires of 1000 kV AC overhead transmission lines.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 93 Single coil spring lock washers, normal type
GB/T 95 Plain washers - Product grade C
GB/T 699 Quality carbon structure steels
GB/T 700 Carbon structural steels
GB/T 1173 Casting aluminium alloys
GB/T 2314 General technical requirements for electric power fittings
GB/T 2315 Specified failure load series and coupling dimensions for electric power fittings
GB/T 2317.4 Test methods for electric power fittings - Part 4: Acceptance inspection for electric power fittings
GB/T 3190 Wrought aluminium and aluminium alloy - Chemical composition
GB/T 3880
(All parts) Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering
GB/T 4437.1 Aluminium and aluminium alloy extruded tubes - Part 1: Seamless tubes
GB/T 5075 Terminology for electric power fittings
DL/T 284 Hot-dip galvanized bolts and nuts for tower and hardware of transmission lines
DL/T 683 Nomenclature for fittings model
DL/T 756 Suspension clamp
DL/T 757 Strain clamp
DL/T 758 Splicing fittings
DL/T 759 Link fittings
DL/T 760.3 Grading ring, shielding ring, grading and shielding ring
DL/T 763 Technical requirements for overhead line helical fittings
DL/T 764 Hexagon head bolts with split pin hole on shank for electric power fittings
DL/T 768.2 Manufacture quality specification for electric power fittings - Part 2: Ferrous metals forgings
DL/T 768.3 Manufacture quality specification for electric power fittings - Part 3: Power fittings stampings
DL/T 768.5 Manufacture quality specification for electric power fittings - Part 5: Aluminium component
DL/T 768.6 Manufacture quality specification for electric power fittings - Part 6: Welding
DL/T 768.7 Manufacture quality specification for electric power fittings - Hot dip galvanized coatings on fabricated iron and steel articles
DL/T 1098 Requirements and tests for overhead line spacers
DL/T 1099 Technical requirements and tests for damper
DL/T 1178 Corona and RIV test methods for fittings of 1000kV AC transmission line
DL/T 1343 Split pins for electric power fittings
DL/T 1372 Technical requirements for jumper of overhead transmission lines
DL/T 2222 Test method for corona of AC transmission line rigid jumpers
YB/T 123 Aluminum-clad steel wire
YB/T 4165 Steel wire strands for vibration damper
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 5075 apply.
4 General requirements
4.1 Appearance and dimensions
4.1.1 The appearance quality and dimensional tolerances of fittings shall meet the requirements of GB/T 2314.
4.1.2 The Specified failure loads and coupling dimensions for link fittings shall meet the requirements of GB/T 2315.
Contents of GB/T 24834-2023
Foreword I
1 Scope
2 Normative references
3 Terms and definitions
4 General requirements
5 Technical requirements
6 Test methods and judgment criteria
7 Marking, packaging and accompanying documents
