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Help CenterClass 155 Polyester Enamelled Copper Wire (PEW/155) for Electrical Insulation
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Since 1970, Shandong Huilong Electrical Material Co., Ltd. has manufactured premium electrical components from our 10,000-30,000 sqm facility in Dezhou, China. Our Class 155 Polyester Enamelled Copper Wire (PEW/155) delivers exceptional thermal stability for demanding applications, trusted by clients across North America, Europe, and Asia-Pacific. With over $100M in annual exports and certifications including ISO 9001 and TS 16949, we ensure industrial-grade reliability.
Core Technical Advantages:
- Superior Thermal Endurance: Withstands continuous operation at 155°C, reducing failure risks in high-temperature environments
- Enhanced Dielectric Strength: Polyester insulation provides >6kV breakdown voltage for critical insulation integrity
- Mechanical Durability: Resists abrasion during winding processes with excellent flexibility
- Chemical Resistance: Performs reliably in oil-filled transformers and harsh industrial atmospheres
Technical Specifications:
| Property | Standard Value | Test Method |
| Thermal Class | 155°C | IEC 60172 |
| Elongation | ≥ 30% | ASTM B193 |
| Dielectric Withstand | Min. 6kV | IEC 60317 |
| Conductor Tolerance | ±1% | IEC 60317-0-1 |
This wire enables 15% higher slot fill in motor windings compared to conventional products, directly improving energy efficiency in applications including:
- HVAC compressors
- Electric vehicle traction motors
- Power transformers
- Industrial automation equipment
Backed by 51-100 skilled technicians and shipped globally from Qingdao/Shanghai/Ningbo ports, our manufacturing process undergoes 12 quality checkpoints. With TL9000 and OHSAS 18001 certifications, we guarantee consistent performance for OEMs requiring bulk supply. Contact us today for samples – let our half-century expertise in conductive materials solve your electrical insulation challenges.
Frequently Asked Questions:
Q1: What temperature range does Class 155 indicate?
A: The wire withstands continuous operation at 155°C with peak tolerance up to 180°C.
Q2: Can I request custom wire diameters?
A: Yes, we produce diameters from 0.05mm to 5.0mm based on your specifications.
Q3: What packaging options are available?
A: Standard spools (5-50kg), cartons, or custom packaging for automated winding systems.
Q4: Do you provide material certification?
A: Full traceability with mill test reports for every batch, including RoHS compliance.
Q5: What's the lead time for 20-ton orders?
A: Typically 15-25 days after confirmation, expedited options available.
Q6: How does PEW compare to polyurethane insulation?
A: Polyester offers superior thermal endurance and mechanical strength for industrial applications.
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