Polyamide-Imide Enameled Copper Round Wire (AIW,220 °C)

Product Overview

Polyamide-imide enameled copper round wire, designated PIW or QY, is the highest-performance enamel system in our round-wire range. The polyamide-imide film delivers outstanding mechanical strength, electrical performance and resistance to heat, chemicals and refrigerants, making it the correct choice for motors that must survive overload, extreme cold or aggressive refrigerants.

Supplied from 0.040 to 0.50 mm in thermal classes 200, 220 and 240, it is widely used in sealed refrigeration compressors, ignition coils and high-temperature electrical equipment.

Key Advantages

• Dual manufacturing hubs in Changzhou and Foshan, China, covering both fine-gauge and heavy-gauge production.
• Full production range from 0.04 mm to 2.50 mm, supporting everything from micro-motors to large power equipment.
• Monthly output of approximately 3,000 tons, with stable capacity for repeat and high-volume programmes.
• ISO 9001 and ISO 14001 certified quality and environmental management systems.
• RoHS and REACH compliant insulation systems for European and North American markets.
• Wire manufactured in accordance with IEC, NEMA, GB and JIS international standards.
• Highest thermal class in our round-wire range, up to 240 °C.
• Excellent resistance to refrigerants, chemicals and radiation.
• Strong resistance to soft breakdown under overload conditions.

Product Features

• Excellent mechanical and electrical properties at high temperature.
• Superior resistance to soft breakdown and overload conditions.
• High mechanical strength for demanding winding and insertion processes.
• Outstanding refrigerant resistance for hermetic compressor motors.
• Withstands high temperature, extreme cold and radiation exposure.
• Stable performance in chemically aggressive environments.

Typical Applications

• Sealed refrigeration and air-conditioning compressor motors.
• Ignition coils for automotive and motorcycle engines.
• Motors and appliances operating under high-temperature or overload conditions.
• Equipment exposed to radiation, extreme cold or aggressive chemicals.
• High-reliability industrial and aerospace windings.

Packing & Delivery

Quality Assurance & Certifications

• Quality management system certified to ISO 9001; environmental management certified to ISO 14001.
• Insulation systems compliant with RoHS and REACH directives for EU and North American supply chains.
• Routine electrical and dimensional testing on every production batch before release.
• Traceability maintained from raw conductor lot through to finished spool.
• Products manufactured to IEC, NEMA, GB and JIS dimensional and performance standards.

Enamel Type Reference

The enamel designations below are the international equivalents of the Chinese GB codes. All five enamel systems are available on copper, aluminium and copper-clad aluminium conductors, and can be combined with the insulation grades and thermal classes shown on this page.

FAQ

Request a Quotation

Need Pricing or a Technical Datasheet?

Send us your conductor size, thermal class and quantity requirement. Our engineers will confirm the correct grade and enamel build, and issue a formal quotation within one working day.