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The IEC 60893-3 standard series provides detailed specifications for industrial rigid laminated sheets used in electrical applications. These sheets are primarily composed of thermosetting resins and are reinforced with various materials such as cellulose paper, glass cloth, and polyester cloth. The standard is divided into several parts, each focusing on different resin types and their respective requirements.
Epoxy resin-based laminated sheets are known for their excellent electrical insulating properties, mechanical strength, and resistance to environmental factors. These sheets are commonly used in electrical equipment like transformers, switchgear, and circuit boards.
Reinforcements: Cellulose paper, woven glass cloth, glass mat, and woven polyester cloth.
Electrical Strength: High dielectric strength, making them suitable for high-voltage applications.
Water Absorption: Low water absorption, ensuring stable electrical properties in humid conditions.
Flatness: Strict tolerances on flatness to ensure uniform performance across the sheet.
Electrical insulation in transformers and switchgear.
Printed circuit boards (PCBs) in electronic devices.
Insulation in high-voltage electrical equipment.
Melamine resin-based laminated sheets offer good electrical insulating properties and are known for their resistance to heat and chemicals. They are often used in applications where moderate electrical performance is required.
Reinforcements: Cellulose paper, woven glass cloth, glass mat, and woven polyester cloth.
Electrical Strength: Moderate dielectric strength, suitable for medium-voltage applications.
Thermal Resistance: Good resistance to heat, maintaining integrity under elevated temperatures.
Chemical Resistance: Resistant to various chemicals, making them suitable for harsh environments.
Electrical insulation in medium-voltage equipment.
Components exposed to moderate heat and chemical conditions.
Electrical panels and enclosures.
Phenolic resin-based laminated sheets are characterized by their excellent thermal stability and mechanical strength. They are commonly used in applications where high heat resistance is essential.
Reinforcements: Woven cotton cloth, woven glass cloth, cellulose paper, and wood veneer.
Electrical Strength: High dielectric strength, suitable for high-voltage applications.
Thermal Stability: Exceptional resistance to high temperatures, maintaining performance in extreme conditions.
Mechanical Strength: High mechanical strength, ensuring durability under mechanical stress.
Electrical insulation in high-voltage equipment.
Components exposed to high temperatures.
Structural parts in electrical machinery.
Unsaturated polyester resin-based laminated sheets are known for their excellent electrical insulating properties and resistance to environmental factors. They are commonly used in applications requiring high dielectric strength and durability.
Reinforcements: Glass mat.
Electrical Strength: High dielectric strength, suitable for high-voltage applications.
Environmental Resistance: Resistant to environmental factors, ensuring stable performance in various conditions.
Mechanical Strength: Good mechanical strength, suitable for structural applications.
Electrical insulation in high-voltage equipment.
Components exposed to environmental factors.
Structural parts in electrical machinery.
Silicone resin-based laminated sheets offer excellent electrical insulating properties and are known for their resistance to high temperatures and environmental factors. They are often used in applications where high thermal stability is required.
Reinforcements: Woven glass cloth.
Electrical Strength: High dielectric strength, suitable for high-voltage applications.
Thermal Stability: Exceptional resistance to high temperatures, maintaining performance in extreme conditions.
Environmental Resistance: Resistant to environmental factors, ensuring stable performance in various conditions.
Electrical insulation in high-voltage equipment.
Components exposed to high temperatures and environmental factors.
Structural parts in electrical machinery.
Polyimide resin-based laminated sheets are characterized by their excellent electrical insulating properties and high thermal stability. They are commonly used in applications requiring high dielectric strength and resistance to high temperatures.
Reinforcements: Woven glass fabric.
Electrical Strength: High dielectric strength, suitable for high-voltage applications.
Thermal Stability: Exceptional resistance to high temperatures, maintaining performance in extreme conditions.
Mechanical Strength: High mechanical strength, ensuring durability under mechanical stress.
Electrical insulation in high-voltage equipment.
Components exposed to high temperatures.
Structural parts in electrical machinery.
The IEC 60893-3 standard series provides comprehensive specifications for industrial rigid laminated sheets based on various thermosetting resins. Each part of the standard focuses on a specific resin type, detailing the requirements for reinforcements, electrical strength, thermal stability, and other key properties. Understanding these specifications is crucial for selecting the appropriate materials for electrical applications, ensuring safety, reliability, and performance in various operating conditions.
