High Temperature Resistant Insulation Paper for Transformer Electrical Material

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Product Description

Basic Information
Model NO.
Insulation Material
Maximum Voltage
10KV~20KV
Thermal Rating
H 180
Thickness
0.14mm-0.38mm
Temperature
High Temperature Resistance
Feature
Insulation
Type
Insulation Paper
Thermal Class
H
Usage
Transformer and Motors
Origin
China
HS Code
8503009090
Production Capacity
20000kg/Month
Product Description
Our Flexible NMN Aramid Insulation Paper is a high-performance laminated material made of polyester film and aramid paper (Nomex). It provides excellent dielectric strength, mechanical durability, and heat resistance up to Class F (155°C). Widely used for motor winding, transformer insulation, and electrical devices, this DMD prepreg insulation material ensures long-term reliability and stability.
Specifications
Model NMN
MaterialPolyester Film + Nomex Paper
Thickness Range0.14mm-0.38mm
Temperature RatingF/H Class (155–180°C)
Electrical ApplicationsMotor winding, transformer slot liner, interturn, phase insulation
FormatRoll / Sheet / Custom Cut
ColorWhite
Key Advantages
  • Thermal Class H (180 °C) NMN composite insulation paper laminated for superior heat resistance.
  • Excellent dielectric strength and high breakdown voltage for reliable motor & transformer performance.
  • Smooth, uniform surface with high tensile strength and flexibility for easy processing.
  • Customizable thickness (0.14-0.38 mm) and width to meet specific project needs.
  • Moisture-proof packaging ensuring material stability during transport and storage.
Performance Requirements
Properties Units 0.14mm 0.18mm 0.20mm 0.25mm 0.30mm
Nominal Grammageg/m²140210250300360
Tensile strength (MD)N/10mm≥100≥160≥180≥220≥270
Elongation (MD)%≥10≥12≥12≥12≥12
Breakdown voltageKV≥6≥10≥11≥13≥15
Composition: NMN is a three-layer soft composite material with outer layers made of Aramid Paper and the inner layer made of high-quality polyester film.
Application Remarks: NMN combines temperature resistance and tear strength with superior dielectric properties. It is ideal for slot, turn, and cushion insulation in high-performance motors.
Frequently Asked Questions
What is NMN Aramid Insulation Paper?
NMN is a three-layer flexible composite material consisting of a polyester film bonded with two layers of aramid paper (Nomex), designed for high-temperature electrical insulation.
What is the thermal class rating of this material?
It is rated for Thermal Class H (180°C), making it suitable for high-heat environments in motors and transformers.
What thicknesses are available?
Standard thicknesses range from 0.14mm to 0.38mm. Custom thicknesses can be discussed based on specific requirements.
Is NMN paper suitable for automatic winding machines?
Yes, its smooth and uniform surface ensures trouble-free operation when used with automatic winding machines in low-voltage motor production.
In what forms is the material supplied?
The material can be supplied in continuous rolls, pre-cut sheets, or custom-cut shapes to fit your specific manufacturing process.
What are the primary applications?
It is widely used for slot insulation, phase-to-phase insulation, and turn-to-turn insulation in Class H motors and dry-type transformers.

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