180 class polyesterimide enameled aluminum (copper) rectangular wire

180 class polyesterimide enameled aluminum (copper) rectangular wire is a special enameled wire resistant to high temperatures, and its conductor cross section is rectangular. It is made by drawing metals such as copper or aluminum into the required round wire, then drawing or extruding it into a rectangular shape through a die, and annealing and softening it. One or more layers of polyesterimide paint are evenly coated on the surface, and then processed by baking and other processes. Compared with common round enameled wires, rectangular wires have a larger surface area and a higher filling factor.

Polyesterimide paint is a high-performance insulating paint with excellent heat resistance, electrical properties and mechanical properties. It is often used as a primer or combined with a topcoat to improve comprehensive performance. Class 180 refers to the temperature resistance grade of the enameled wire, corresponding to Grade H in the international standard, with a maximum operating temperature of 180°C.

◆ Larger surface area: Compared with round wires of the same cross-sectional area, rectangular wires have a larger surface area, which is conducive to heat dissipation, reducing coil temperature rise and improving the efficiency of electrical equipment.

◆ Higher filling factor: In the same winding space, rectangular wires can be wound with more turns, improving the inductance and performance of the coil, and reducing the volume and weight of the equipment.

◆ Excellent heat resistance: Able to work for a long time in a high temperature environment of 180°C.

◆ Good chemical corrosion resistance: In addition to strong acids, chloride ion salts, and organic compounds, it also has good resistance to acids, alkalis, and most organic solvents.

◆ It has good paint film toughness and scratch resistance, suitable for automatic winding and embedding.

◆ Direct welding: Polyesterimide enameled wire does not need to remove the paint film and can be directly welded.

It should be noted that due to the special shape of the rectangular wire, its winding process is more complicated than that of the round wire, and special winding equipment and processes are required. Polyesterimide enameled rectangular wire has higher heat resistance, but the price is also more expensive. When selecting and using it, it is necessary to choose according to specific needs.

Due to its excellent high temperature resistance and unique advantages of rectangular wire, 180-grade polyesterimide enameled rectangular wire is widely used in motors, electrical appliances, instruments and other products with high requirements for heat resistance, heat dissipation and filling factor.

• High temperature motors: such as industrial motors, traction motors, special motors in high temperature environments.
• Dry-type transformers: Dry-type transformers used for power transmission and voltage conversion, especially high-frequency transformers.
• Reactors: Used in reactors in power systems to improve the performance and stability of reactors.
• Welding cables: Used in cables in welding equipment to improve the heat dissipation performance and current carrying capacity of cables.
• Aerospace equipment: Used in high temperature and high reliability occasions such as aerospace.
• Special coils: Used in other coils with high requirements for heat dissipation and filling factor.