CSA C411.4-16 (R2021) PDF (Not Available)

CSA C411.4-16 (R2021) is a standard that governs the design, testing, and acceptance criteria for composite suspension insulators used in overhead power transmission lines with a nominal voltage greater than 75 kV.

The standard has been updated to include a flammability test, revisions to the critical impulse flashover test, revisions to the wet power frequency voltage flashover test, and an updated mechanical load-time test. These changes reflect advancements in industry practice and align the standard with international standards where applicable.

The standard is part of the CSA C411 series of standards, which covers various types of insulators. These include AC suspension insulators, dead-end/suspension composite insulators for overhead lines below 75 kV, line post composite insulators for overhead distribution lines, and composite insulators for guy wires.

CSA C411.4-16 (R2021) is based on the requirements of IEC 61109:2008, which defines test methods and acceptance criteria for composite suspension and tension insulators for AC systems with a nominal voltage greater than 1,000 V.

The standard specifies the mechanical, electrical, and dimensional characteristics of the insulators, as well as the conditions under which these characteristics should be verified. It also provides test methods and acceptance criteria to ensure the quality and performance of the insulators. By referencing the insulator types in CSA C411.1, the standard aims to provide a complete specification for composite suspension insulators.