Common test methods for insulating and sheathing materials of electric cables; part 1: methods for general application; section three; methods for determining the density; water absorption tests; shrinkage test; amendment 1 to IEC 811-1-3:1985

This document represents the first amendment to an existing technical standard published by an international body dedicated to electrical and electronic engineering. It formally modifies the original baseline specification to update specific requirements related to testing and evaluating the physical properties of insulating and sheathing materials. The amendment introduces revised procedures for assessing mechanical performance and chemical stability, ensuring that materials meet evolving safety and quality benchmarks. It clarifies earlier test methodologies and incorporates new data derived from recent research and industrial experience. The content focuses exclusively on the technical adjustments and supplementary details necessary to align the standard with current practices. This amendment is issued as a separate annex to the main standard document and must be applied in conjunction with the original specifications to maintain compliance. It outlines precise conditions for sample preparation, testing environments, and data interpretation. The document serves to refine the existing framework without altering the fundamental scope of the original publication. All stakeholders involved in the manufacturing and certification of electrical equipment should consult this update to ensure their products adhere to the latest technical guidelines.