IEC EN 60455-3-3 Resin Based Unfilled Polyurethane Compounds Used for Electrical Insulation

EUROLAB, with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of IEC EN 60455-3-3 testing. This standard gives requirements for unfilled polyurethane resinous compounds in the cured state for grades PUR-U-6 to PUR-U-4 with an ash content of not more than 8%.

IEC EN 60455-3-3 is a technical standard that specifies requirements for unfilled polyurethane compounds used for electrical insulation. Part 3 of the standard outlines specifications for each material, and Page 3 specifically covers unfilled polyurethane compounds.

The standard specifies the following requirements:

• Composition: The unfilled polyurethane compound will consist of a polyol component and an isocyanate component mixed to form the polyurethane. Other additives may be added according to the manufacturer's instructions.
• Physical and chemical properties: The compound must meet the requirements for physical and chemical properties such as viscosity, density, gelling time, curing time and thermal stability.
• Electrical properties: The compound must meet the requirements for electrical properties such as dielectric strength, dielectric constant and dissipation factor.
• Mechanical properties: The compound must meet requirements for mechanical properties such as tensile strength, elongation at break, and flexural strength.
• Thermal properties: The compound must meet the requirements for thermal properties such as coefficient of thermal expansion and thermal conductivity.
• Environmental properties: The compound must meet the requirements of environmental properties, such as resistance to moisture, chemicals and ultraviolet radiation.

By meeting these requirements, manufacturers can ensure that their unfilled polyurethane compounds meet the required standards for electrical insulation.

EUROLAB assists manufacturers with IEC EN 60455-3-3 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.