PIW-240 Rectangular Enameled Copper Wire – Class 240 Aromatic Polyimide Insulation
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PIW-240
Rectangular Enameled Copper Wire – Class 240 Aromatic Polyimide Insulation, Highest Thermal Endurance for Extreme Environments
PIW-240 is a premium rectangular enameled copper wire featuring aromatic polyimide (PI) insulation – Class 240, the highest thermal class available in the industry. This wire is engineered for mission-critical applications where extreme heat, radiation, and chemical exposure are unavoidable.
Compared to traditional round wires, the rectangular cross-section maximizes copper fill within a given slot or window – achieving 25-30% higher copper density – significantly reducing I²R losses and improving motor efficiency. The aromatic polyimide insulation offers exceptional resistance to thermal degradation, radiation, cryogenic temperatures, and aggressive chemicals, making it the material of choice for aerospace, downhole drilling, and next-generation EV systems.
With a thermal class of 240°C, heat shock resistance up to 260°C, and a cut-through temperature exceeding 450°C, PIW-240 delivers unparalleled reliability in the most demanding operating conditions.
Key Features & Benefits
Highest continuous operating temperature – 240°C, with cut-through exceeding 450°C – outperforms conventional Class 220 by a wide margin.
25-30% higher copper fill factor compared to round wire – lower I²R losses, better heat dissipation, and compact high-power-density designs.
Available in Grade 1 (Single Build), Grade 2 (Heavy Build), and Grade 3 (Triple Build) for flexible dielectric strength selection.
Exceptional stability under gamma radiation, aggressive chemicals, and cryogenic temperatures – ideal for nuclear, space, and deep drilling applications.
High breakdown voltage and stable insulation resistance across a wide temperature range (-269°C to 240°C).
Meets GB/T 6109.22-2008, IEC 60317-46, and NEMA MW 16-C standards.
Product Parameters
| Model Number | Conductor Material | Thermal Class | Insulation Material | Cross-Section (mm²) | Film Grade |
|---|---|---|---|---|---|
| PIW-1/240 | Copper | 240 | Aromatic Polyimide (PI) | 0.0125 – 25 | 1 (Single Build) |
| PIW-2/240 | Copper | 240 | Aromatic Polyimide (PI) | 0.0125 – 25 | 2 (Heavy Build) |
| PIW-3/240 | Copper | 240 | Aromatic Polyimide (PI) | 0.0125 – 25 | 3 (Triple Build) |
💡 Key Technical Data: Heat Shock: 260°C · Cut-through Temperature: 450°C · Standards: GB/T 6109.22, IEC 60317-46, NEMA MW 16-C
※ Custom cross-sections and film grades are available upon request. Aluminum and CCA versions also available.
Dimensional Specifications (Grade 2 / Heavy Build – Representative Sizes)
以下为Grade 2代表性尺寸。Grade 1和Grade 3可应要求提供。完整尺寸表（0.0125–25 mm²）请联系我们索取。
| a × b (mm) | Tolerance (mm) | Min. Film Build Gr.2 (mm) | Max. Outer Dimension (mm) | Breakdown Voltage (Min) |
|---|---|---|---|---|
| 1.00 × 2.00 | ±0.03 / ±0.05 | 0.045 | 1.10 × 2.10 | ≥ 3200V |
| 1.20 × 2.50 | ±0.03 / ±0.05 | 0.050 | 1.32 × 2.62 | ≥ 3800V |
| 1.50 × 3.00 | ±0.04 / ±0.06 | 0.050 | 1.62 × 3.12 | ≥ 4200V |
| 1.80 × 4.00 | ±0.04 / ±0.06 | 0.055 | 1.93 × 4.13 | ≥ 4800V |
| 2.00 × 5.00 | ±0.04 / ±0.07 | 0.055 | 2.14 × 5.14 | ≥ 5300V |
| 2.50 × 6.30 | ±0.05 / ±0.08 | 0.060 | 2.65 × 6.45 | ≥ 6000V |
| 3.00 × 8.00 | ±0.06 / ±0.10 | 0.065 | 3.18 × 8.18 | ≥ 6800V |
※ Full dimensional table including all cross-sections from 0.0125 mm² to 25 mm² is available upon request. Corner radius can be tailored.
Typical Applications
PIW-240 is specified in applications where thermal, mechanical, or environmental stresses exceed the limits of lower-class materials:
Product Gallery
【图片占位 1 – 扁线产品图】
建议放置：PIW-240扁铜漆包线产品实拍图（展示矩形截面、线轴、线圈样品）
尺寸建议：1200×800px，居中显示
Manufacturing Facilities
【图片占位 2 – 工厂车间】
建议放置：扁线生产车间实拍图（聚酰亚胺专用生产线、多道涂漆设备、检测仪器）
尺寸建议：1200×600px
Packaging & Transportation
【图片占位 3 – 包装线轴】
建议放置：扁线专用线轴实拍图或包装示意图（PL系列/P系列线轴，真空防潮包装）
| Spool Type | d1 (mm) | d4 (mm) | l1 (mm) | l2 (mm) | Spool Weight (g) | Net Wire Weight (kg) | Spools per Box |
|---|---|---|---|---|---|---|---|
| PL-1 | 80 | 20 | 120 | 100 | 240 | 0.5 | 8 |
| PL-4 | 125 | 25 | 190 | 160 | 860 | 4 | 4 |
| P-5 | 160 | 20 | 114 | 90 | 290 | 4 | 4 |
| P-10 | 200 | 25 | 134 | 110 | 500 | 8 | 2 |
| P-30 | 300 | 31 | 160 | 130 | 1290 | 25 | 1 |
| PC400 | 400 | 52 | 260 | 224 | 2500 | 60 | 1 |
※ Polyimide wire is supplied with moisture-proof vacuum packaging to preserve insulation properties.
Why Choose CHINGCUNG for PIW-240 Rectangular Wires?
- Dedicated Class 240 Production – Specialized polyimide production line with advanced multi-pass coating technology and in-line eccentricity inspection.
- Comprehensive Film Grades – Grade 1, Grade 2, and Grade 3 available to meet varying dielectric strength and insulation thickness requirements.
- Global Compliance – Strict adherence to GB/T 6109.22-2008, IEC 60317-46, and NEMA MW 16-C standards.
- Flexible MOQ – Sample orders (10-20 kg) welcome for qualification testing; bulk orders supported with 15-20 working days lead time.
- Logistics Advantage – Located in Shanghai with strategic freight partners for efficient global delivery (Air/Sea/Express).
- Engineering Support – Free DFM feedback for customized profiles, hybrid insulation, and custom film builds.
Get a Quote
Need PIW-240 rectangular wire for your extreme-temperature application?
Contact our engineering team for free samples, technical datasheets, or a customized quotation with your specific dimensions.
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📞 Tel: +86-13621982708 | 🌐 www.chingcung.com
| Material | Copper |
|---|---|
| Model Number | PIW-T*W |
| Color | Natural |
| Applicable | Motors, Transformers, Inductors, Coils |
| Conductor Size | 0.0125–25 mm² |
| Thermal Class | Class 240 |
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