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CHINGCUNG®
Special Enameled Wire · Since 2015
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EIWL-2/180
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Rectangular · Grade 2 Heavy Build
EIWL Enameled Aluminum
Rectangular Wire
Class 180 (H) Polyesterimide insulation · Optimized for large transformers & high-power motors
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Weight -40%
vs copper equivalent
Grade 2
Double coating · IEC compliant
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Technical Specs (Rectangular)
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Model Number
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EIWL-2/180
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Thermal Class
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180°C (H-Class)
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Conductor
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Aluminum (EC Grade)
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Insulation
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Modified Polyesterimide
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Film Build
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Grade 2 (Heavy / double coating)
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Dimensions (T*W)
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2mm to 5mm (T) × 4mm to 16mm (W)
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Standards
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IEC 60317-0-2, NEMA MW 36-C
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Why Aluminum Rectangular?
- ~40% lighter than copper — reduces core weight
- Excellent cost efficiency for large windings
- Grade 2 insulation ensures high dielectric reliability
- Better thermal dissipation in rectangular form
- High space factor for transformers & reactors
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Rectangular Advantage
Rectangular wires maximize copper/aluminum fill factor in confined slot spaces, reducing winding losses. Our EIWL series is specifically designed for large power transformers, traction motors, and high-current inductors.
Standard grade 2 build provides robust insulation for voltages up to several kV.
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Aluminum vs. Copper — Strategic Choice
Aluminum magnet wire offers significant weight savings (approximately 40% lighter than copper for the same ampacity) and lower material cost, making it ideal for large-scale transformers, wind turbine generators, and industrial motors. With proper design (larger cross-section), aluminum windings perform reliably at 180°C thermal class. CHINGCUNG's advanced coating ensures excellent adhesion and uniform insulation even on rectangular profiles.
Standard Aluminum Bare Conductor Sizes (T × W)
Available thickness × width combinations — organized by conductor thickness (mm)
Thickness = 2.0 mm
2.0 × 4.0 mm 2.0 × 5.0 mm 2.0 × 6.0 mm 2.0 × 8.0 mm 2.0 × 10 mm
Thickness = 2.5 mm
2.5 × 4.0 mm 2.5 × 5.0 mm 2.5 × 6.0 mm 2.5 × 8.0 mm
Thickness = 3.0 mm
3.0 × 4.0 mm 3.0 × 5.0 mm 3.0 × 6.0 mm 3.0 × 8.0 mm 3.0 × 10 mm 3.0 × 12 mm
Thickness = 3.5 mm
3.5 × 6.0 mm 3.5 × 8.0 mm 3.5 × 10 mm
Thickness = 4.0 mm
4.0 × 6.0 mm 4.0 × 8.0 mm 4.0 × 10 mm 4.0 × 12 mm
Thickness = 5.0 mm
5.0 × 8.0 mm 5.0 × 10 mm 5.0 × 12 mm 5.0 × 14 mm 5.0 × 16 mm
✅ Wide thickness/width ratio supported — up to 1:5. Custom dimensions available upon request.
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Thickness (T) mm
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Width (W) mm
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Min Film Increase (mm)
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Max O.D. (T×W) Grade 2
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2.00
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4.00
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0.12
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2.24 × 4.24
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2.00
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8.00
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0.12
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2.24 × 8.24
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2.50
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6.00
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0.14
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2.78 × 6.28
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3.00
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10.00
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0.15
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3.30 × 10.30
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3.50
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8.00
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0.15
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3.80 × 8.30
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4.00
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12.00
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0.16
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4.32 × 12.32
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5.00
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12.00
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0.17
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5.34 × 12.34
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5.00
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16.00
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0.17
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5.34 × 16.34
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*Grade 1 / Grade 3 available upon request. Film increase values are minimum per side for rectangular conductors. Tolerances follow IEC 60317-0-2.
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≥300°C
Cut-through temp
IEC 60317-0-2
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-40%
Weight vs copper
System cost reduction
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2-5mm
Thickness range
Grade 2 heavy build
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100T/M
Monthly capacity
Rectangular wires
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Main Applications for EIWL
Power Transformers, Reactor Windings, Traction Motors, Wind Turbine Generators, High-current Inductors, Rectifier Transformers
Rectangular wire notes: Grade 2 is our standard heavy build for 180°C class. Grade 1 (single coating) or Grade 3 (triple coating) can be customized. For specific thickness/width ratios or special dimensions, contact our technical team. Aluminum rectangular wires offer substantial weight advantage for large-scale electromagnetic devices.
Specialized Lines
Dedicated rectangular enameling machines with precision roller coating. Online dimensional laser measurement & spark testing.
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Logistics Advantage
Shanghai port — efficient export to global markets. Flexible MOQ and rapid sampling for large projects.
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Custom Packaging
Spools, coils, or payoff packs for automated winding lines. OEM labeling & technical support.
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CHINGCUNG · Shanghai Husu M&E Technology Co., Ltd
Address: Room 402, Building 13, No.518 Xinzhuan Rd, Songjiang District, Shanghai, 201612 China
Tel: +86 13621982708 | Email: leon.xu@chingcung.com
Web: https://chingcung.com
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Inquire now →
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Specifications subject to change. EIWL-2/180 complies with RoHS & REACH. Aluminum rectangular wire data for reference.
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EIWL Polyesterimide Enameled Aluminum Rectangular Wire | 180°C Grade 2 Heavy Build for Power Transformers & Motors Images
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