SIST EN 60455-1:2002

Overview

EN 60455-1:1998 (CLC adoption of IEC 60455-1:1998) defines terminology, designation and general requirements for resin based reactive compounds used for electrical insulation. The standard covers cured compounds that are solvent-free (they may contain reactive diluents and fillers) and establishes a classification system based on glass transition temperature (Tg). It explicitly excludes reactive compounds used as coating powders.

Key topics and requirements

• Definitions and designation
  • Standardized terminology for resin based reactive compounds to ensure consistent communication across manufacturers, test laboratories and specifiers.
• General requirements
  • Requirements for cured compounds relevant to use as electrical insulation materials (material state, absence of solvents, and suitability for insulation applications).
• Classification by glass transition temperature (Tg)
  • Compounds are grouped according to their Tg to support appropriate selection for thermal and mechanical performance in service.
• Composition notes
  • Applies to solvent-free reactive systems; formulations may include reactive diluents and fillers.
• Scope exclusions
  • Does not apply to reactive compounds intended for use as coating powders (separately regulated).

Applications and users

• Practical applications:
  • Selection and specification of cured insulating resins for electrical equipment where cured compound properties (thermal class, mechanical stability) are relevant.
  • Quality control and product labeling for manufacturers of resin-based electrical insulation materials.
• Who uses this standard:
  • Manufacturers of resin-based reactive compounds and cured insulation materials.
  • Design engineers and R&D teams developing electrical insulation systems.
  • Test laboratories and quality assurance professionals verifying compliance and performance classification.
  • Procurement and specification writers who require standardized designations and performance categories.
  • Standards committees and regulatory bodies harmonizing insulation material requirements.

Related standards

• EN 60455-1:1998 is aligned with IEC 60455-1:1998 (harmonized European adaptation often published as SIST EN 60455-1 in national bodies).
• Users should consult adjacent parts of the IEC/EN 60455 series and other electrical insulation standards for test methods and application-specific requirements.

Keywords: EN 60455-1:1998, resin based reactive compounds, electrical insulation, glass transition temperature, solvent-free, reactive diluents, fillers, classification, definitions, general requirements, IEC 60455-1.