Flat litz wire 4.5mmx4.4mm 0.05mmx4875 nylon serving copper litz wire For Transformer
This is a custom-designed flat nylon serving litz wire, engineered for high-performance applications where space and efficiency are critical. As a large-scale product, it features a finished outer diameter with a width of 4.5 mm and a thickness of 4.4 mm, offering a substantial cross-sectional area while maintaining a flat profile.
Internally, the wire is constructed from 4,875 individual strands of magnet wire, each with a conductor diameter of just 0.05 mm. These strands are precisely twisted together to minimize high-frequency losses such as the skin effect and proximity effect. The entire assembly is wrapped with an outer layer of nylon serving, which provides excellent electrical insulation, mechanical protection, and thermal stability.
·IEC 60317-23
·NEMA MW 77-C
·customized according to customer requirements.
Compared to round nylon serving litz wire, the flat version offers distinct advantages. While round litz wire is commonly used for general winding applications, the flat configuration maximizes copper fill within a given winding window. Its rectangular shape allows for higher packing density, resulting in reduced winding losses and improved thermal management. This makes flat litz wire particularly suitable for applications where space is limited but high current-carrying capacity is required.
This flat nylon serving litz wire is specifically designed for use in transformer windings. It is ideal for high-frequency transformers used in power electronics, such as those found in electric vehicle chargers, renewable energy systems, and switching power supplies. By reducing AC losses and enhancing thermal performance, this wire contributes to higher efficiency, reliability, and compactness in advanced transformer designs.
| TypeConductor diameter*Strand number | 2USTC-H0.05*4875(4.5*4.4) | ||
| Single wire(strand)
|
Conductor diameter(mm) | 0.050±0.003 | |
| overall diameter (mm) | 0.055-0.069 | ||
| Thermal Class(℃) | 180 | ||
| Strands construction
|
Strands number
|
first time | 39 |
| second time | 39*5 | ||
| third time | 39*5*5 | ||
| fourth time | 39*5*5*5 | ||
| Pitch(mm)
|
first time | 16±8 | |
| second time | 25±10 | ||
| third time | 35±10 | ||
| fourth time | 65±10 | ||
| bunching direction | S/S/S/S | ||
|
Insulation layer
|
Material type | Nylon | |
| Material specs(mm*mm or D) | / | ||
| Times of Wrapping | 1 | ||
| Overlap(%) or thickness(mm),mini | 0.045 | ||
| Wrapping direction | Z | ||
| Characteristics
|
Width（mm） | 4.5±0.2 | |
| Thickness（mm） | 4.4±0.2 | ||
| Max resistance (Ω/Km at20℃) | 2.227 | ||
| Breakdown voltage Mini (V) | 500 | ||
5G base station power supply
EV Charging Stations
Industrial Motor
Maglev Trains
Medical Electronics
Wind Turbines
Founded in 2002, Ruiyuan has been in the manufacture of enamelled copper wire for 20 years.We combine the best manufacturing techniques and enamel materials to create a high-quality, best-in-class enameled wire. The enameled copper wire lies at the heart of technology we use every day – appliances, generators, transformers, turbines, coils and much more. Nowadays, Ruiyuan has the global footprint to support our partners in marketplace.
Our Team
Ruiyuan attracts many outstanding technical and management talents, and our founders have built the best team in the industry with our long-term vision. We respects the values of each employee and provides them with a platform to make Ruiyuan a great place to grow a career.
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