Overview
IEC 60455-3-2:2003 is an international standard published by the International Electrotechnical Commission (IEC) which specifies requirements for quartz filled epoxy resinous compounds used for electrical insulation. This document applies to materials in the cured (hardened) form, specifically for compound types EP-F-1 through EP-F-7. Quartz filled epoxy compounds play a crucial role in ensuring electrical insulation performance and reliability across diverse electrical and electronic applications.
Key points include:
- Setting quality, physical, and electrical requirements for quartz filled epoxy compounds.
- Providing guidance for manufacturers, suppliers, and users of electrical insulating materials.
- Establishing uniform test methods for evaluating compliance.
Key Topics
Main elements covered by the standard:
- Scope of Application: The requirements are tailored for quartz filled epoxy resinous compounds (EP-F-1 to EP-F-7) in the cured state.
- Material Content: To comply, compounds must contain 45% to 65% by mass of quartz filler.
- Test Methods: Refers to IEC 60455-2 for validated test procedures on properties such as viscosity, epoxy equivalent, shelf life, pot life, and exothermic temperature.
- Standardized Properties: Addresses key properties including:
- Physical: Density, flexural strength, tensile strength, impact strength, shrinkage.
- Thermal: Glass transition temperature, temperature of deflection under load, thermal endurance.
- Electrical: Volume resistivity, dielectric strength, permittivity, dissipation factor, tracking resistance.
- Other: Water absorption, flammability.
Special requirements for specific properties (as requested in purchase contracts) are also outlined, ensuring flexibility for diverse use cases.
Applications
Quartz filled epoxy resinous compounds are extensively used in the following areas due to their outstanding electrical insulation, mechanical robustness, and chemical resistance:
- Electrical Insulation Systems: For high-voltage components, such as transformers and switchgears, where enhanced dielectric strength and tracking resistance are critical.
Open preview (PDF)Resin based reactive compounds used for electrical insulation - Part 3: Specifications for individual materials - Sheet 2: Quartz filled epoxy resinous compounds
