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| Categories | Polyimide Enamelled Copper Wire |
|---|---|
| Brand Name: | CHINGCUNG |
| Model Number: | QY-2/220 |
| Certification: | RoHS |
| Place of Origin: | Jiangsu |
| MOQ: | 5 Kgs |
| Price: | 18.50-41.00 USD/Kg |
| Payment Terms: | T/T |
| Supply Ability: | 100 tons/month |
| Delivery Time: | 5-8 working days |
| Packaging Details: | Spools, Cartons, Pallets, Wooden Boxes, Containers |
| Thermal Class: | Class H (220°C) |
| Conductor: | High-purity copper (OFC optional) |
| Insulation Material: | Polyimide |
| Diameter Range: | 0.10 mm – 4.00 mm (Grade 2 full series) |
| Standards: | GB/T 6109.6-2008, IEC 60317-7, NEMA MW 16-C |
| Cut-through Temperature: | ≥400°C (superior heat resistance) |
| Chemical Resistance: | Solvent, refrigerant & radiation resistant |
| Target Frequency: | High-frequency transformers, motors |
| Heat Shock: | 240°C (exceptional thermal overload) |
| Packaging: | PT-10 / PT-15 / PT-25 spools |
| Company Info. |
| Shanghai Husu M&E Technology Co., Ltd |
| Verified Supplier |
| View Contact Details |
| Product List |
CHINGCUNG® | Special Enameled Wire Expert
Class 220 High-Temperature Resistant | Grade 2 Heavy Build Insulation | Superior Thermal Stability
Featured: Grade 2 (Heavy Build) Optimized for demanding insulation requirements: QY-2/220 with Grade 2 polyimide insulation provides higher dielectric strength, improved voltage endurance and reliable performance for high-voltage windings & industrial coils. Grade 1 & Grade 3 also available upon request. | ✓ Grade 1 / Grade 3 optional |
Key Attributes
| Electrical & Thermal
|
Dimensional Data (QY-2/220 Copper Round - Grade 2 focus)
Conductor Dia. (mm) | Tolerance ±mm | Min. Film Build Grade 2 (mm) | Max. Outer Dia. Grade 2 (mm) | Typical Breakdown (V) |
0.10 | ±0.003 | 0.016 | 0.125 | ≥950 |
0.15 | ±0.003 | 0.023 | 0.182 | ≥3200 |
0.20 | ±0.003 | 0.027 | 0.239 | ≥3500 |
0.25 | ±0.004 | 0.032 | 0.309 | ≥3900 |
0.30 | ±0.004 | 0.035 | 0.352 | ≥4000 |
0.35 | ±0.005 | 0.038 | 0.406 | ≥4300 |
0.40 | ±0.005 | 0.040 | 0.459 | ≥4400 |
0.50 | ±0.005 | 0.045 | 0.566 | ≥4600 |
0.60 | ±0.006 | 0.050 | 0.674 | ≥4800 |
0.70 | ±0.007 | 0.053 | 0.779 | ≥4800 |
0.80 | ±0.008 | 0.056 | 0.884 | ≥4900 |
0.90 | ±0.009 | 0.060 | 0.989 | ≥5000 |
※ Table shows typical Grade 2 dimensions. Full range 0.10~4.00mm available. Grade 1 & Grade 3 datasheets upon request. Custom build available for higher voltage requirements.
Why CHINGCUNG QY-2/220 Polyimide Wire?
Class 220 Heat Resistance Continuous 220°C operation, short-term up to 400°C. Ideal for extreme environment windings. | Grade 2 High Dielectric Heavy build insulation increases breakdown voltage by ~30% compared to Grade 1. | Chemical & Radiation Resistant Polyimide base resists most solvents, refrigerants and radiation, extending service life. | Precision Manufacturing In-line pinhole detection and concentricity control ensure uniform Grade 2 build. |
As a core product of the CHINGCUNG brand, the QY-2/220 polyimide enameled copper wire adopts advanced "base coat + top coat" composite curing technology, ensuring a dense and uniform insulation layer. For Grade 2 heavy build, we apply precision dies and multi-pass annealing/baking processes to guarantee film thickness deviation within ±0.003mm across 0.10~4.00mm diameters. The pinhole count is significantly lower than standard requirements. It fully complies with IEC 60317-7, NEMA MW 16-C, and GB standards. Compared to conventional polyester or polyurethane wires, QY-2/220 maintains superior electrical and mechanical properties under continuous high-temperature stress.
Custom Attributes (Differentiators)
| Commercial & Logistics
|
Typical Applications
Aerospace coils, High-temp industrial motors, Oil & drilling equipment, EV traction motors, Solenoids / actuators, Variable frequency transformers, Railway propulsion, Hermetic relays, Induction heating, Nuclear instrumentation windings
QY-2/220 polyimide enameled wire with Grade 2 heavy build is specifically recommended for high-voltage gradients, high-frequency power supplies and severe thermal environments. The heavy build reduces turn-to-turn short circuit risk and enhances overall system reliability. CHINGCUNG customers worldwide have deployed Class 220 polyimide wires in mission-critical electromagnetic components across Europe, North America, Southeast Asia and the Middle East.
Technical insight: Grade 2 vs Grade 1 – Why upgrade?
For designs that demand higher insulation safety margins, Grade 2 (heavy build) offers an average increase of 0.005~0.045mm in film thickness compared to Grade 1, depending on diameter, boosting breakdown voltage by about 30%. The QY-2/220 leverages a well-controlled polyimide application that reduces pinhole defects far below industry limits. This makes it the preferred choice for inverter-duty motors, high-voltage transformers, and any application where long-term reliability under electrical stress is crucial. CHINGCUNG provides full traceability reports and batch-to-batch consistency testing ensuring each spool meets NEMA MW 16-C and IEC 60317-7.
✅ Recommendation: For ultra-high temperature needs consider QY(F)-2/240 (Class 240) or self-bonding polyimide wires; QY-2/220 offers the best balance of performance and cost-effectiveness for most demanding industrial environments.
Shanghai Husu M&E | CHINGCUNG Strength
§ Established in 2015, dedicated to special enameled wires, owned factories in Jiangsu & Zhejiang. § Automated production lines + in-line pinhole/concentricity inspection; monthly capacity 100 tons. § Multiple patents and ISO9001 quality system to ensure Grade 2 film precision. § Experienced import/export team providing turnkey international logistics (air/sea/courier). § Free technical support for material selection, customized insulation build & voltage rating. | Contact us Shanghai Husu M&E Technology Co., Ltd |
Frequently Asked Questions
Q1: Can I order a sample of QY-2/220 Grade 2 for testing? Q2: Do you offer other film grades besides Grade 2? Q3: Is QY-2/220 suitable for outgassing-sensitive environments
(space/aerospace)? | Q4: Can you customize spool sizes or winding lengths? Q5: What is the typical lead time and export documents? Q6: Main advantage vs other Class 220 polyimide wires? |
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