Magnetic materials - Classification of surface insulations of electrical steel sheet, strip and laminations

This technical specification establishes a comprehensive classification system for the surface insulation of electrical steel sheets and strips, specifically tailored for use in magnetic materials. The document outlines detailed criteria for categorizing various insulating coatings applied to non-oriented and oriented silicon steel products, which are fundamental components in the manufacture of electric motors and transformers. It provides standardized definitions and measurement methods to ensure consistency in evaluating the quality and performance of these insulating layers. By defining specific classes based on electrical properties and mechanical characteristics, this document facilitates uniform technical communication between manufacturers and users across different regions. The content focuses exclusively on the technical requirements and classification logic, ensuring that all parties adhere to the same rigorous standards when specifying surface treatments. This approach helps maintain high levels of efficiency and reliability in electrical equipment design and production without introducing subjective assessments or external evaluations.