What types of motor insulation paper are there?

May 21, 2024

Motor insulation paper, also known as motor insulation material, plays a vital role in the insulation of motors. There are many types of motor insulation paper, each designed for specific applications and insulation requirements. Here are some common types:

 

Nomex paper:

Nomex paper is a high-temperature resistant insulation material made from aramid fibers. It has excellent thermal stability and is often used in applications where motors operate at high temperatures.

Polyester Film (Polyester Film):

Mylar or polyester film is a widely used insulating material in electric motors. It has good electrical insulating properties and is often used in combination with other materials in laminated insulation systems.

 

Fish paper (vulcanized fiber):

Fish paper or vulcanized fiber is a durable and flexible insulation material. It is commonly used for slot liners, wedges and other components in motors.

Insulating cardboard:

Insulating cardboard is an insulating material made from compressed wood fibers. Due to its excellent dielectric properties, it is used in the construction of transformer coils and motor components.

Electrical Insulation Pressboard

 

Crepe paper:

Crepe paper is an insulating paper that has a wrinkled or wrinkled texture. It is commonly used in transformers and motor applications, providing good consistency and flexibility.

Kraft paper:

Kraft paper is a strong and flexible insulation material made from wood pulp. It is usually impregnated with oil or resin to enhance dielectric strength and used for insulation of motor coils.

Diamond dot paper:

Diamond-shaped dotted paper is an insulating paper coated with diamond-shaped epoxy resin dots on one or both sides. It is used for layer insulation in transformers and motors, providing extra strength and reliability.

Polyimide film (Kapton):

Polyimide film, commonly known as Kapton, is a high temperature resistant, flexible insulating material. It is used in applications requiring extreme temperatures and high performance insulation.

Fiberglass insulation paper:

Fiberglass insulation paper is impregnated with resin and reinforced with fiberglass. It has good mechanical strength and is suitable for motors requiring high temperatures and mechanical stress.