Specification for industrial rigid laminated sheets based on thermosetting resins for electrical purposes. Part 1 : Definitions, designations and general requirements

This technical specification establishes the foundational definitions, nomenclature, and general requirements for industrial hard grade sheet materials manufactured from thermosetting resins used in electrical engineering applications. Developed by an international organization dedicated to standardization in electrical and electronic fields, this document provides a unified framework for classifying and identifying various types of laminated sheets utilized in the production of electrical components and equipment. It outlines the necessary criteria for material properties and terminology to ensure consistency across global manufacturing and supply chains. The text focuses on the essential characteristics required for these resins-based materials, serving as a reference for manufacturers, users, and regulatory bodies involved in the electrical industry. By defining the core attributes of these industrial sheet products, the document facilitates interoperability and quality assurance in the design and fabrication of electrical systems. It represents a key component in the series of standards covering electrical materials, specifically addressing the initial aspects of specification before detailed testing methods or performance requirements are considered.