AMA Composite Insulation Paper

AMA Composite Insulation Paper

AMA Composite Insulation Paper

AMA insulation paper  is a high-performance, three-layer flexible composite laminate engineered for electrical insulation in Class F (155°C) thermal systems. 

By combining these materials, AMA composite paper merges the exceptional thermal stability, flame retardancy, and mechanical edge-tear resistance of aramid fibers with the flawless dielectric breakdown voltage of polyester film. It serves as a highly cost-effective, heavy-duty insulation solution for modern electric motors, alternators, and dry-type transformers.

Three-Layer: Polyester film (PET) serves as the middle layer, with thermally rolled aramid paper on both sides.

Technical Specifications & Parameters

Product Identification:
Two specifications are provided, clearly distinguished by colored lines based on the thickness of the aramid paper, for easy on-site identification:

Model A (0.04mm): With yellow marking line

Model B (0.05mm): With orange marking line

Advantages of AMA insulation paper:

1. Superior Overall Performance: Excellent heat resistance (Class F), electrical insulation strength, and mechanical toughness.

2. Reliable Compliance: Product performance fully complies with NMN standards (GB/T5591.3-2008).

3. Highly Competitive Cost: Offers performance very similar to NMN insulating paper at a more competitive price, making it an ideal upgrade alternative.

Applications in Electrical Manufacturing

Where is AMA composite insulation paper utilized?

Class F Electric Motors: Serving as premier motor slot insulation, slot liners, phase-to-phase insulation, and wedge insulation in industrial motors.

Dry-Type Transformers: Applied as a robust interlayer barrier and end-turn shield within copper or aluminum windings.

Wind Generators & Traction Motors: Providing critical dielectric security in heavy-duty grids subjected to intense mechanical vibrations and cycling loads.

Frequently Asked Questions

Q1: What is the structural difference between AMA and DMD insulation paper?

A: The primary difference lies in the outer layers. DMD uses polyester non-woven fabric, with both Class B (130°C) and Class F (155°C. AMA upgrades the outer layers to high-purity aramid paper, elevating the continuous thermal threshold to Class F (155°C) for more demanding applications.

Q2:  Can AMA paper be used in automatic coil insertion machinery?

A: Yes. Chengrui AMA paper is specifically engineered with high stiffness and high tensile energy absorption. It passes seamlessly through automated slot-insertion and coil-wrapping lines without tearing, cracking, or delaminating at the edges.