What is AMA insulation paper?

AMA insulation paper is a three-layer insulation paper made of polyester film coated with adhesive and bonded to two sides of aramid paper. This structure makes AMA insulation paper combine the excellent high temperature resistance and good mechanical toughness of aramid paper with the good dielectric strength of polyester film.

Performance characteristics

AMA insulation paper has a variety of excellent performance characteristics with its unique structure and material composition:

High temperature resistance: Due to the addition of aramid paper, its heat resistance level is higher and it usually reaches Class F or higher (depending on product specifications and production process). This high temperature resistance makes AMA insulation paper suitable for electrical equipment in high temperature environments.

Excellent dielectric properties: Polyester film as an insulating layer has excellent dielectric strength and insulation resistance. This enables AMA insulation paper to effectively prevent current leakage and arc discharge, ensuring the safe operation of electrical equipment.

Good mechanical toughness: Aramid paper has high strength and toughness, and AMA insulation paper is not easy to break or deform when subjected to mechanical stress. This ensures the insulation reliability of the electrical equipment.

Good flexibility and tear strength: AMA insulation paper has good flexibility and is easy to process and install; at the same time, because its tear strength is high, it can withstand certain external forces and is not easy to damage.

Application fields

Due to the above excellent performance characteristics, AMA insulation paper is widely used in a variety of electrical equipment, specifically including:

Motor insulation: AMA insulation paper is suitable for slot-to-slot insulation, turn-to-turn insulation and liner insulation of motors, which can effectively improve the insulation performance and operational reliability of motors.

Generator insulation: In generators, AMA insulation paper can be used to insulate stator coils and rotor coils to ensure the safe operation of generators in high-voltage and high-temperature environments.

Transformer insulation: AMA insulation paper can be used for interlayer spacing insulation of dry-type transformers to improve the insulation performance and temperature resistance level of the transformer.

Other electrical equipment insulation: AMA insulation paper can also be used in the insulation system of other electrical equipment, such as switchgear, mutual inductors and so on.

Manufacturers and quality control

There are many manufacturers of AMA insulation paper, and these manufacturers differ in production process, raw material selection and quality control. In order to ensure the quality and performance of AMA insulation paper, ZTelecgroup has taken the following measures:

Selection of high quality raw materials: High quality polyester film and aramid paper are selected as raw materials to ensure the basic performance of the product.

Strict production process control: During the production process, process parameters such as adhesive coating amount, laminating temperature and time are strictly controlled to ensure the adhesive strength and dielectric properties of the products.

Quality testing and certification: Strict quality testing of finished products, including temperature resistance test, dielectric strength test, mechanical toughness test, etc., to ensure that the products meet the relevant standards and requirements. 

Storage conditions

AMA insulation paper should be stored in a dry and clean room at room temperature below 40℃.

Avoid fire, heating and direct sunlight.

The storage period is 12 months. If the storage period is exceeded, technical standard inspection is required. If the test is qualified, it can still be used.