Direct-from-factory enameled magnet wire configurations optimized for extreme thermal efficiency and breakdown voltage resistance.
A comprehensive look at chemical compositions, dielectric strengths, and industrial standards governing PEW-coated wiring products.
PEW (Polyester Enameled Wire) is formulated by coating high-purity electrical conductors with a modified polyester resin coat. This polymer layer forms a cross-linked protective film offering a stable dielectric boundary layer capable of withstanding consistent electrical potential, voltage spikes, and mechanical vibration stress without structural decay.
PEW coatings are categorized into performance thermal classes including Class 130, Class 155, and Class 180. These materials remain chemically stable, maintaining structural cohesion and insulation properties even during continuous operation at peak temperature ratings, minimizing system failures caused by thermal overloading.
Our coating methodology incorporates multi-pass die coating paired with advanced inline thermal curing. This process ensures consistent film concentricity, high scratch resistance, and excellent flexibility, preventing microscopic cracking or peeling during automatic high-speed coil winding.
| Specification Parameter | Copper Conductors (PEW) | Aluminum Conductors (PEW) | Standard Compliance Test |
|---|---|---|---|
| Conductor Size Range | 0.05 mm to 5.00 mm (including 1.4mm profile) | 0.12 mm to 6.00 mm | IEC 60317-1 / ASTM B258 |
| Thermal Endurance Class | 130°C, 155°C, 180°C, 200°C | 130°C, 155°C, 180°C, 200°C | IEC 60317-0-1 / NEMA MW 1000 |
| Dielectric Breakdown Voltage | Up to >12 kV (depending on grade) | Up to >9.5 kV (depending on grade) | JIS C3216 / ASTM D1676 |
| Adhesion & Flexibility (Elongation) | ≥ 30% (Standard testing limits) | ≥ 25% (Standard testing limits) | IEC 60851-3 (Mandrel Wrap Test) |
| Spring-Back Angle | < 5 degrees (for wire size >1.0mm) | < 8 degrees (for wire size >1.0mm) | IEC 60851-3.2 Springback Method |
Suzhou Daiming Electrical Materials Co., Ltd. is a specialized manufacturer of high-quality enameled wires, including enameled aluminum wires, enameled copper wires, and copper-clad aluminum enameled wire (CCAW). Operating from a modern 258,333.33 ft² facility, we maintain a stable high-volume output utilizing 30 state-of-the-art production lines.
By controlling every production stage from raw material selection through final quality check, we ensure our products align with strict global requirements. This consistent focus on product reliability makes our enameled wires a trusted choice for demanding industrial applications worldwide.
Active Automated Manufacturing Lines
Highly-Optimized Production Site
Global Distribution Network
Analyzing how vertically integrated manufacturing processes, raw material access, and logistics efficiency translate into direct value for global buyers.
We source high-purity copper cathodes and primary aluminum ingots from reliable local smelters. By maintaining direct supply pipelines, we stabilize raw material inputs and shield our clients from sudden global market price spikes.
Our Suzhou facility integrates copper/aluminum rod drawing, multi-stage enameled coating, and customized spooling into a single continuous process. This setup minimizes material handling times and increases overall manufacturing throughput.
Every step of production is monitored by inline laser micrometer systems, high-voltage spark testers, and computerized spool monitors. This constant tracking ensures wire dimension consistency and insulation reliability.
Our facility near major shipping hubs in Suzhou and Shanghai allows for fast domestic transport to container ports, ensuring reliable shipping schedules and prompt delivery to international destinations.
Our magnet wires and PEW coated cables are designed to deliver reliable performance in high-stress, high-efficiency electrical equipment.
PEW enameled wires provide the thermal endurance and dielectric strength needed to wind compact electric motor rotors and industrial generator stators, maintaining reliable performance under heavy cyclical loads.
Our flat wire and paper-insulated CTC products are used to wind low-loss, high-capacity utility and distribution transformers, helping to reduce load losses and improve power grid efficiency.
Designed to handle the demands of modern 800V automotive drivetrains, our enameled copper and CTC wires offer the thermal dissipation and corona discharge resistance necessary for reliable EV performance.
For applications in telecommunications, home appliances, and control systems, our enameled aluminum and copper-clad aluminum wires deliver reliable high-frequency insulation in a lightweight package.
Our research and development initiatives focus on meeting the evolving demands of green energy transmission and high-voltage power networks.
To support the shift to 800V EV motor architectures, we are developing corona-resistant enameled wires. These coatings use nano-silica composite fillers to prevent insulation breakdown caused by high-frequency inverter voltage spikes.
Our product roadmap includes thinner insulating wraps for Continuously Transposed Conductors (CTC). Thinner wrapping material allows for higher winding density in transformers, helping manufacturers design smaller, more efficient units.
We are updating our manufacturing lines to use solvent-free curing and regenerative thermal oxidizers. These systems capture and reuse heat from solvent evaporation, significantly reducing carbon emissions during production.
Our quality control processes ensure every reel of wire meets major international standards, providing reliable performance across global markets.
All Daiming enameled wire products conform to international benchmarks including IEC 60317, NEMA MW 1000, and JIS C3216. We also maintain full RoHS and REACH compliance, making our products suitable for environmentally sensitive applications worldwide.
Each production batch undergoes testing in our dedicated facility. Testing includes dielectric breakdown, thermal shock resistance, spring-back angle, pinhole checks, and copper purity analysis, ensuring consistent quality before shipment.
We offer engineering and logistics support to help you select the optimal wire dimensions, thermal classes, and reel configurations. This support is designed to simplify integration into your automated winding processes.
Get quick answers to common technical, manufacturing, and shipping questions about our enameled wire products.
Additional magnet wire options, including specialty paper-covered flat configurations and high-performance continuously transposed conductors.
