Polyimide coated magnet wires and their specifics
Electrical breakdown of high-temperature insulation materials can be prevented by
using thermoplastic Polyimide, TPI. This polymer can be extrusion-coated as other
polymers, but 'AURUM', TPI reduces electrical and magnetic losses. 'AURUM' has the
highest Tg of any commercially available Thermoplastic, 245°C and its insulation
performance especially at temperatures above 150°C beats any other know insulation.
As the automobile sector transitions to electric vehicles, new polymers that offer higher
electrical and thermal properties are used. For better system integration, weight-
reduction and downsizing in higher-volt systems, for faster charging and longer charging
distances, electrical breakdown must be prevented by high-temperature insulation
materials. AURUM reduces electrical and magnetic losses with a high comparative
tracking index (CTI) > 600 volts.
Thermoplastic Polyimide (TPI) produced by Mitsui Chemicals of Japan, and sold by
BEIGLO GmbH is known for excellent thermal stability, high-temperature resistance,
and robust electrical insulation properties. TPI coated magnet wires are a suitable
choice for high-voltage applications (800V and above). Here are some key characteristics of 'AURUM' coated magnet wires for high-voltage mobility applications:
-High-Temperature Resistance: Capable of withstanding elevated temperatures in
general and best-in class performance near welding-spots.
-Thermal Stability: Provide thermal stability over a wide temperature range,
ensuring the integrity of the insulation even well above 150°C continuously.
-Electrical Insulation: Excellent electrical insulation properties to prevent electrical
breakdown and ensure the safety and reliability of the system.
-Flexibility: Maintain flexibility even at high temperatures, allowing for ease of
winding during the manufacturing process and flexibility in the final application.
-Chemical Resistance: Resistant to many chemicals, enhancing the durability of
the coating in various cooling environments.
-High Dielectric Strength: The high dielectric strength of 'AURUM' helps in
preventing electrical arcing and breakdown.
-Lightweight: 'AURUM' coated magnet wires are lightweight, because even 30%
less volume insulates better than other, commonly used materials.