NHN INSULATION PAPER

Detailed Introduction

Material Composition & Manufacturing

NHN insulation paper represents a sophisticated composite construction, manufactured through precision heat-pressing technology. The structure consists of:

• Core Layer: High-grade polyimide film providing thermal and chemical resistance
• Outer Layers: Aromatic polyamide paper (Nomex® type) on both sides offering mechanical strength and flexibility
• Bonding System: H-grade adhesive ensuring permanent lamination and thermal stability

This three-layer architecture creates a synergistic material that combines the best properties of each component while eliminating their individual weaknesses.

Key Technical Characteristics

Thermal Performance: NHN insulation paper is classified as Class H insulation material according to IEC 60085 standards, with continuous operating temperatures up to 180°C. The material maintains structural integrity and electrical properties even during extended exposure to elevated temperatures, making it ideal for high-performance motor and transformer applications.

Dielectric Properties: The composite exhibits excellent electrical insulation characteristics with breakdown voltage ranging from 8-9 KV (depending on thickness) after bending. The material shows no layering, foaming, or adhesive flow when subjected to hot adhesion testing at 200°C±2°C for 10 minutes, ensuring long-term reliability in electrical systems.

Mechanical Strength: NHN demonstrates remarkable tensile strength and elongation properties in both longitudinal and horizontal directions. The material maintains flexibility without brittleness, with elongation values of ≥10% (longitudinal) and ≥8% (horizontal) for not-bent specimens, ensuring ease of handling during installation.

Standards & Certifications

• IEC 60085 (Thermal Classification)
• IEC 60641 (Insulation Materials Specification)
• UL Recognition
• RoHS Compliant

Technical Specifications

Note:The product specifications provided are for reference purposes only. Please refer to the actual product for final specifications. We also offer various sizes and thicknesses to meet your specific needs. For further customization, please contact us.

Application Scenarios

1. Electric Motor Insulation

• Slot insulation for H-class rotating machines
• Phase-to-phase insulation in stator windings
• Inter-turn insulation for high-voltage coils
• Ground insulation systems

2. Transformer Applications

• Layer insulation in dry-type transformers
• Interwinding barriers
• Gasket and spacer insulation
• High-voltage bushing insulation

3. Generator Systems

• Rotor and stator slot liners
• Field coil insulation
• End-winding support structures

4. Industrial Electrical Equipment

• Switchgear insulation components
• Circuit breaker arc chutes
• Contactor insulation
• Busbar wrapping and separation

5. Specialty Applications

• Aerospace electrical systems requiring lightweight, high-temperature insulation
• Rail transportation electrical components
• Renewable energy equipment (wind turbine generators, solar inverters)

Frequently Asked Questions

Q1: What is the difference between NMN and NHN insulation paper? A: While both are composite materials, NMN has a polyester film core (Class F, 155°C), whereas NHN features a polyimide film core (Class H, 180°C). NHN offers superior thermal performance, making it suitable for more demanding high-temperature applications.

Q2: Can NHN insulation paper be used in humid environments? A: Yes, NHN maintains excellent mechanical and electrical properties even after moisture exposure, unlike many conventional insulation materials that degrade when damp. However, proper drying procedures should still be followed during motor assembly.

Q3: What is the typical lead time for custom widths? A: Standard widths (up to 1000mm) are typically available from stock. Custom slitting for specific widths can be completed within 5-7 business days. Please contact our team for urgent requirements.

Q4: Is NHN insulation paper compatible with VPI (Vacuum Pressure Impregnation) processes? A: Absolutely. NHN is fully compatible with VPI processes using polyester, epoxy, or other H-class impregnating resins. The material’s structure allows proper resin penetration while maintaining dimensional stability.

Q5: How should NHN insulation paper be stored? A: Store in a cool, dry environment (temperature: 10-35°C, relative humidity: <65%) away from direct sunlight. Keep material in original packaging until use. Shelf life is 12 months under proper storage conditions.

Q6: What cutting methods are recommended? A: NHN can be cut using sharp scissors, rotary cutters, or die-cutting equipment. For production volumes, automated cutting and creasing systems provide optimal efficiency and precision.

Q7: Does SIDA provide technical support for material selection? A: Yes, our technical team offers comprehensive support including material selection guidance, application engineering, and custom specification development. Contact us to discuss your specific requirements.

Q8: Is NHN insulation paper environmentally friendly? A: NHN is RoHS compliant and contains no halogens or harmful substances. While the material itself is not biodegradable due to its synthetic polymer composition, it contributes to energy efficiency by enabling higher-performance electrical equipment.

Why Choose SIDA NHN Insulation Paper?

• Quality Assurance: Every batch tested to international standards
• Consistent Supply: Reliable inventory and fast delivery
• Technical Expertise: 20+ years in electrical insulation materials
• Custom Solutions: Tailored widths, lengths, and specifications
• Competitive Pricing: Direct manufacturer pricing without intermediaries
• Global Reach: Serving customers across Asia, Europe, and Americas