1.0.1 This code was formulated with a view to enable the design of 66kV and under over-head electrical power transmission line living up to safe and reliable power supply, state-of-the-art technologies, economy and rationality and being convenient for construction and maintenance.
1.0.2 This code is applicable to the design of 66kV or under AC over-head electrical power transmission line (hereinafter referred to as "overhead power line").
1.0.3 The design of overhead power lines must be seriously subject to the national technical and economic policies, development planning, and actively be in the adoption of new technologies, new materials, new equipments, new processes and new structures.
1.0.4 As for the tower structure design of overhead power lines, probabilistic theory-based limit state design method shall be adopted.
1.0.5 Except for those requirements stipulated in this code, those in the current relevant ones of the nation also shall be complied with for the design of overhead power lines.
1 General Provisions
2 Route
3 Meteorological Conditions
4 Wires, Ground Wires, Insulators and Anchor Clamps
4.1 General Rules
4.2 Wiring Design
4.3 Insulators and Anchor Clamps
5 Insulation Coordination, Lightning Protection and Grounding
6 Tower Type
7. Tower Load and Material
7.1 Load
7.2 Material
8 Basic Provisions on Tower Design
9 Tower Structure
9.1 General Provisions
9.2 Constructional Requirements
10 Foundation
11 Orientation, Distance-over-ground and Scissors Crossing of the Tower
12 Subsidiary Facilities
Annex A Grade of Weak-current Line
Annex B Squalidity Grade of the Environment of Overhead Power Lines
Explanation of Wording in this Code
