Composite suspension insulators for overhead lines > 75 kV
This is the third edition of CSA C411.4, Composite suspension insulators for overhead lines > 75 kV. It supersedes the previous editions, published in 2010 and 1998. Significant changes in this edition include
This Standard is based on the requirements of IEC 61109:2008, Insulators for overhead lines — Composite suspension and tension insulators for a.c. systems with a nominal voltage greater than 1 000 V — Definitions, test methods and acceptance criteria. In addition, this Standard includes physical, electrical, and mechanical characteristics, and end fitting types and dimensions according to the insulator types in CSA C411.1, in order to provide a complete insulator specification. This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group
This Standard applies to suspension and dead-end composite insulators used on ac overhead transmission lines with a nominal voltage greater than 75 kV and a frequency not greater than 100 Hz.
This Standard specifies
In this Standard, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Standard; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the Standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.
| SDO | CSA: Canadian Standards Association |
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| Publication Date | Jan. 1, 2016 |
| Language | en - English |
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