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AIW Rectangular Enameled Copper Wire Class 220 Grade 2 Polyamide-Imide Insulation Optimized for High-Efficiency Coils & EV Applications
AIW Rectangular Enameled Copper Wire Class 220 Grade 2 Polyamide-Imide Insulation Optimized for High-Efficiency Coils & EV Applications
AIW Rectangular Enameled Copper Wire Class 220 Grade 2 Polyamide-Imide Insulation Optimized for High-Efficiency Coils & EV Applications
AIW Rectangular Enameled Copper Wire Class 220 Grade 2 Polyamide-Imide Insulation Optimized for High-Efficiency Coils & EV Applications
AIW Rectangular Enameled Copper Wire Class 220 Grade 2 Polyamide-Imide Insulation Optimized for High-Efficiency Coils & EV Applications
AIW Rectangular Enameled Copper Wire Class 220 Grade 2 Polyamide-Imide Insulation Optimized for High-Efficiency Coils & EV Applications
AIW Rectangular Enameled Copper Wire Class 220 Grade 2 Polyamide-Imide Insulation Optimized for High-Efficiency Coils & EV Applications
AIW Rectangular Enameled Copper Wire Class 220 Grade 2 Polyamide-Imide Insulation Optimized for High-Efficiency Coils & EV Applications
AIW Rectangular Enameled Copper Wire Class 220 Grade 2 Polyamide-Imide Insulation Optimized for High-Efficiency Coils & EV Applications
AIW Rectangular Enameled Copper Wire Class 220 Grade 2 Polyamide-Imide Insulation Optimized for High-Efficiency Coils & EV Applications
Specifications
Type :
Insulated
Color :
Natural
Conductor type :
Solid
Price :
15.00-45.00 USD/Kg
MOQ :
30 Kgs
Delivery Time :
5-8 Working days
Shape :
Rectangular
Cut-through :
≥320°C (excellent overload resistance)
Insulation material :
Polyamide-Imide
Standard :
IEC, NEMA, GB, JIS
Conductor material :
Copper
Payment Terms :
T/T
Certification :
RoHS
Application :
Heating, Transformer, Motor
Place of Origin :
Zhejiang
Thermal class :
220-240 centigrade
Packaging Details :
PL-1 / PL-4 / P-5 / P-10 / P-30 / PC400
Supply Ability :
100 Tons/Month
Model Number :
AIW (QXYB-2/220)
Brand Name :
CHINGCUNG
Size :
0.0125 mm² – 25 mm²
Packing :
Plastic spools, Cartons, Pallets
Description

EVMAGNETWIRE.COM | CHINGCUNG® Enamelled Wire

AIW Rectangular Enameled Copper Wire

Class 220 Polyamide-Imide Insulation | Grade 2 Heavy Build | GB Standard QXY | Optimized for High-Efficiency Coils & EV Applications


Featured: Grade 2 Heavy Build (Rectangular)

AIW rectangular wires with Grade 2 polyamide-imide insulation provide superior dielectric strength, excellent thermal endurance (Class 220), and outstanding chemical resistance. Ideal for formed coils, dry-type transformers, and EV motor windings. Grade 1 & Grade 3 available upon request.

✓ Grade 1 / Grade 3 optional


Technical Highlights

  • Model Series: AIW (QXY / GB/T 6109.20)
  • Thermal Class: Class 220 (Polyamide-imide)
  • Insulation Material: Polyamide-imide (PAI) – QXY grade
  • Insulation Build: Grade 2 (Heavy) ★ Primary focus
  • Conductor Material: High-conductivity oxygen-free copper (OFHC)
  • Cross-section: Rectangular / square corners (customizable rounding)
  • Conductor area range: 0.0125 mm² – 25 mm² (Grade 2 series)
  • Standards: GB/T 6109.20-2008, IEC 60317-13, NEMA MW 35-C

Electrical & Mechanical

  • Breakdown Voltage (Gr.2): ≥ 3000V - 6500V (depends on thickness)
  • Cut-through temperature: ≥320°C (excellent overload resistance)
  • Heat Shock: 220°C (superior stability)
  • Elongation: ≥ 20% (flexible forming)
  • Spring back angle: Controlled for coil winding precision
  • Copper fill factor: Up to 25% higher than round wire


Typical Dimensions (AIW Rectangular - Grade 2 Heavy Build)

a x b (mm)

Tolerance (mm)

Min. film build Gr.2 (mm)

Max. outer dimension (mm)

Typical Breakdown (V)

1.00 x 2.00

±0.03/±0.05

0.045

1.10 x 2.10

≥2800

1.20 x 2.50

±0.03/±0.05

0.050

1.32 x 2.62

≥3300

1.50 x 3.00

±0.04/±0.06

0.050

1.62 x 3.12

≥3500

1.80 x 4.00

±0.04/±0.06

0.055

1.93 x 4.13

≥4000

2.00 x 5.00

±0.04/±0.07

0.055

2.14 x 5.14

≥4500

2.50 x 6.30

±0.05/±0.08

0.060

2.65 x 6.45

≥5000

3.00 x 8.00

±0.06/±0.10

0.065

3.18 x 8.18

≥5500

Representative dimensions for Grade 2 heavy build rectangular copper wire. Custom sizes (0.0125 mm² – 25 mm²) and film grades available. Rounding radius of corners can be tailored.


Why AIW Rectangular Wire for High-Density Windings?

Higher Copper Fill Factor

20-30% more copper in same winding area vs round wire → lower I²R losses

Class 220 Polyamide-Imide

Excellent thermal stability, cut-through ≥320°C, ideal for harsh conditions

Grade 2 Heavy Build

Enhanced turn-to-turn insulation, ideal for high-voltage EV & inverter applications

Precision Rectangular Profile

Excellent shape retention & winding stability for edge-wound coils

AIW rectangular enameled copper wires are specially engineered for applications where space efficiency and thermal performance are critical. Polyamide-imide insulation (Class 220) offers outstanding resistance to heat, chemicals, and mechanical stress. Compared to traditional round wires, the rectangular cross‑section maximizes copper fill within a given slot or window, significantly reducing winding losses. CHINGCUNG’s advanced die-forming and multi‑pass annealing ensure tight dimensional control with uniform Grade 2 insulation. The heavy build (Grade 2) adds a reliable dielectric barrier, suitable for traction motors, dry-type transformers, high-frequency inductors, and EV charging systems.


Differentiators (Custom Attributes)

  • Thermal index: 220°C (Class 220)
  • Insulation structure: Polyamide-imide
  • Corner radius: R0.4 – R1.5 mm (customizable)
  • Coating uniformity: Grade 2 deviation ≤ ±0.004 mm
  • Surface quality: Low friction, high abrasion resistance
  • Conductor: OFC

Commercial & Logistics

  • MOQ: 300 Kg (sample order welcome)
  • Price term: FOB Shanghai / EXW / CIF
  • Packaging: PL-1 / PL-4 / P-5 / P-10 / P-30 / PC400 spools (see table below)
  • Lead time: Sample 3~5 days; bulk 15~20 days
  • Payment: T/T
  • Monthly capacity: 100 tons (special wires including rectangular)


Spool Specifications (for AIW Rectangular Wire)

Spool Type

d1 [mm]

d4 [mm]

I1 [mm]

I2 [mm]

Spool weight [g]

Nom. 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

* Valid for copper wire. For other metals (aluminum, CCA), please inquire. Other spool types available upon request.


Key Application Fields

EV traction motors, Dry-type transformers, High-frequency inductors, Charging station coils, Railway propulsion, Solar inverter chokes, UPS & industrial power supplies, Wind turbine generators


Technical Insight: Grade 2 on Rectangular Wire – Why it matters

For rectangular wires, insulation uniformity across the flat sides and corners is crucial. CHINGCUNG’s AIW series with Grade 2 heavy build ensures a minimum film increase of 0.045–0.065 mm (depending on dimensions) which provides up to 40% higher breakdown voltage compared to Grade 1. This is especially critical for inverter-fed motors where voltage spikes stress the winding insulation. Polyamide-imide insulation also offers excellent resistance to refrigerants, oils, and harsh chemicals. We supply AIW wires with automatic concentricity control for demanding high-voltage platforms.


CHINGCUNG – Engineered for Excellence

§ Dedicated rectangular wire production lines with in-line dimension laser gauges.

§ ISO 9001 quality system for high-performance winding wires.

§ Monthly capacity 100+ tons of special enameled wires (round + rectangular).

§ Strategic location in Shanghai with fast air/sea freight and global logistics partners.

§ Free engineering support for customized profiles, hybrid insulation & custom film builds.

Get in touch – EVMAGNETWIRE.COM

Shanghai Husu M&E Technology Co., Ltd
CHINGCUNG Brand｜EV Magnet Wire Division
Address: Room 402, Building 13, No.518 Xinzhuan Rd, Songjiang, Shanghai, China 201612
Email: leon.xu@chingcung.com

Tel: +86 13621982708
Web: https://evmagnetwire.com | https://chingcung.com


Frequently Asked Questions – AIW Rectangular Wire

Q1: Can I order a sample of AIW Grade 2 rectangular wire for prototype?

A: Yes. Samples as small as 10–20 Kgs with full test report (breakdown voltage, dimensions, pinhole) can be produced within 30 days.

Q2: What is the advantage of Grade 2 vs Grade 1 on rectangular wire?

A: Grade 2 adds approximately 0.015~0.025 mm more insulation per side, boosting voltage endurance & reducing risk of turn-to-turn failure in high-stress windings.

Q3: Can you customize aspect ratio and corner radius?

A: Absolutely. We support custom rectangular dimensions, rounded corners, and flexible film builds to match your coil former.

Q4: Is AIW suitable for oil-immersed transformers?

A: Yes. Polyamide-imide insulation has excellent compatibility with transformer oils and refrigerants, widely used in hermetic and oil-filled applications.


Ready to upgrade to high-efficiency rectangular windings?
Get a quick quote for AIW Grade 2 wires with your specific dimensions.

Request datasheet → leon.xu@chingcung.com


© 2025 CHINGCUNG — High-Performance Rectangular Enameled Copper Wire | AIW (QXY) Series Grade 2 heavy build featured. Technical data based on GB/T 6109.20 / IEC 60317-13 standards. Specifications subject to engineering improvements.
Proudly presented on Evmagnetwire.com — Advanced magnet wire solutions for e-mobility & industrial power.


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AIW Rectangular Enameled Copper Wire Class 220 Grade 2 Polyamide-Imide Insulation Optimized for High-Efficiency Coils & EV Applications

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Product Detail
Type :
Insulated
Color :
Natural
Conductor type :
Solid
Price :
15.00-45.00 USD/Kg
MOQ :
30 Kgs
Delivery Time :
5-8 Working days
Contact Supplier
AIW Rectangular Enameled Copper Wire Class 220 Grade 2 Polyamide-Imide Insulation Optimized for High-Efficiency Coils & EV Applications
AIW Rectangular Enameled Copper Wire Class 220 Grade 2 Polyamide-Imide Insulation Optimized for High-Efficiency Coils & EV Applications
AIW Rectangular Enameled Copper Wire Class 220 Grade 2 Polyamide-Imide Insulation Optimized for High-Efficiency Coils & EV Applications
AIW Rectangular Enameled Copper Wire Class 220 Grade 2 Polyamide-Imide Insulation Optimized for High-Efficiency Coils & EV Applications
AIW Rectangular Enameled Copper Wire Class 220 Grade 2 Polyamide-Imide Insulation Optimized for High-Efficiency Coils & EV Applications

Shanghai Husu M&E Technology Co., Ltd

Verified Supplier
1 Years
shanghai, shanghai
Since 2015
Business Type :
Manufacturer, Exporter, Trading Company, Seller
Main Products :
Aromatic Polyimide Enameled Wire, Dual Layer Enameled Copper Wire, Polyimide Enamelled Copper Wire
Total Annual :
1,000,000-10,000,000
Employee Number :
100~110
Certification Level :
Verified Supplier
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