Overhead transmission lines - Design criteria
Scope:
This International Standard specifies the loading and strength requirements of overhead lines derived from reliability-based design principles. These requirements apply to lines 45 kV and above, but can also be applied to lines with a lower nominal voltage.
This document also provides a framework for the preparation of national standards dealing with overhead transmission lines, using reliability concepts and employing probabilistic or semi-probabilistic methods. These national standards will need to establish the local climatic data for the use and application of this standard, in addition to other data that are country-specific.
Although the design criteria in this standard apply to new lines, many concepts can be used to address the design and reliability requirements for refurbishment, upgrading and uprating of existing lines.
This document does not cover the detailed design of line components such as supports, foundations, conductors or insulators strings.
Project need:
Develop new edition of CSA Overhead Systems code for 2025 edition + review/review 2022 CCA amendment. To update the current standard due to user experience/feedback/new technology along with correcting/clarifying of existing clause language. This proposed New Edition is being developed at the request of the Technical Committee on Overhead Systems (C511) & Technical Subcommittee on RBD (C511.1). It will provide the industry with the latest requirements and technical guidance for the Canadian Overhead transmission lines - Design criteria, including related Climate Change Amendments.
Note: The information provided above was obtained by the Standards Council of Canada (SCC) and is provided as part of a centralized, transparent notification system for new standards development. The system allows SCC-accredited Standards Development Organizations (SDOs), and members of the public, to be informed of new work in Canadian standards development, and allows SCC-accredited SDOs to identify and resolve potential duplication of standards and effort.
Individual SDOs are responsible for the content and accuracy of the information presented here. The text is presented in the language in which it was provided to SCC.