Explore our high-performance magnet wires, continuously transposed conductors, and specialty paper-coated winding solutions engineered for ultra-high voltage applications.
The global transition towards clean energy and the massive deployment of ultra-high voltage (UHV) transmission networks require high-efficiency winding wires. Paper-coated flat copper wires, continuously transposed conductors (CTC), and specialized enameled wires form the core of modern grid systems, enabling large-scale, low-loss energy distribution across continents.
Suzhou Daiming Electrical Materials Co., Ltd. addresses these challenges by developing low-loss winding wires that operate under extreme dielectric, thermal, and mechanical stresses. Our custom paper-covered flat copper wires utilize ultra-pure electrolytic copper and premium insulating papers to withstand grid fluctuations, reduce eddy current losses, and prolong transformer lifespans by up to 40 years.
We manufacture electrical conductors designed to meet demanding operational parameters across high-frequency and high-voltage environments.
Engineered for lightweight designs, delivering high thermal performance and resistance in weight-sensitive applications.
Designed for compact, highly efficient electromagnetic coils with low resistivity and high heat-class limits.
An alternative for cost-effective winding systems, combining copper conductivity with lightweight aluminum cores.
Continuously Transposed Conductors designed to minimize electrical losses in power transformers.
Learn about our material selections, paper wrapping configurations, and thermal engineering that maximize transformer reliability.
We source high-purity electrical-grade Kraft paper, crepe insulation paper, and thermal-upgraded Kraft paper. These materials offer high oil absorption, dialectic barrier performance, and low moisture retention.
For applications exceeding 155°C, we wrap copper conductors in DuPont Nomex® aramid paper. Nomex insulation provides high dielectric strength, mechanical flexibility, and thermal resilience under extreme overload conditions.
Our wrapping lines apply paper tapes at customizable overlap rates (30% to 70% or double-butt-lap). This secures uniform insulation coverage and prevents physical exposure during conductor bending.
We use oxygen-free copper rods with minimum copper content of 99.99% for maximum electrical conductivity and low resistance, ensuring low heating rates and energy conservation.
We verify dielectric insulation thickness, edge configurations, and radius matching to manage electromagnetic field distributions in high-capacity electrical machinery.
Our processes utilize solvent-free varnishes and natural insulating cellulose materials, aligning with green engineering goals and global sustainability standards.
Reference technical and dimensional parameters for design integration in transformer projects.
| Parameter | Kraft Paper Covered | Crepe Paper Covered | Nomex Paper Covered |
|---|---|---|---|
| Thermal Class | Class A (105°C) | Class A (105°C) | Class H / C (180°C - 220°C) |
| Conducting Core | ETP Copper / Oxygen-Free Copper | ETP Copper / Oxygen-Free Copper | Oxygen-Free Copper / Semi-Rigid Copper |
| Insulation Layers | 2 - 24 layers of overlapping tape | 2 - 12 layers of creped tape | 2 - 12 layers of Nomex® 410 tape |
| Broad Side (a) | 2.00 mm - 16.00 mm | 3.00 mm - 16.00 mm | 2.00 mm - 16.00 mm |
| Narrow Side (b) | 1.00 mm - 6.00 mm | 1.50 mm - 6.00 mm | 1.00 mm - 6.00 mm |
| Dielectric Strength | ≥ 3.5 kV in air, ≥ 12 kV in oil | ≥ 3.0 kV in air, ≥ 10 kV in oil | ≥ 5.0 kV in air, ≥ 15 kV in oil |
| Main Standard | IEC 60317-27, GB/T 7673 | IEC 60317-27, IEC 60317-48 | IEC 60317-53, ASTM D3376 |
We are a high-tech enterprise specializing in magnet wires, continuously transposed conductors, and winding wire insulation. Based on our 258,333.33 ft² production site, our facility has 30 production lines equipped with automatic laser inspection and temperature-controlled drawing units.
Our engineers have more than 10 years of experience, ensuring compliance with international norms, including GB, IEC, NEMA, and ASTM standards. We assist partners in 10+ countries, delivering custom-engineered solutions for high-performance motors, transformers, and green energy applications.
Explore Our FacilitiesWe help global clients manage project specifications, regional certifications, and complex supply chain logistics.
We maintain quality standards including ISO 9001 and ISO 14001 certification. Our products comply with RoHS, REACH, and UL guidelines, meeting global environmental and safety standards.
We offer customized supply solutions, including DDP/CIF options, customs management, and localized warehousing coordination for key partners in North America, the EU, and East Asia.
Our engineering support team provides design consultations, thermal analysis, dimension sizing assistance, and performance optimization for transformer winding projects.
We develop high-temperature insulations, high-conductivity alloys, and ultra-dense transposed winding wires for next-generation power infrastructure.
Optimizing wire designs for 800V drive motors and specialized wind power systems, balancing breakdown voltages with thermal performance.
Enhancing Continuously Transposed Conductors (CTC) with customized configurations for ultra-high voltage grids, reducing energy losses in transformer stations.
Scaling production of hybrid enameled wires and copper-clad aluminum materials, optimizing resource use and weight efficiency.
Developing bio-degradable papers and natural insulation oil-compatible wrapping papers to support green transformation initiatives globally.
Our product lineup meets strict manufacturing criteria across power grid infrastructure, transport, and automated systems.
High dielectric insulation wires designed to withstand heat and load shifts in power distribution grids.
Application details
Compact winding wires and enameled profiles engineered for micro-motor coils and household appliances.
Application details
Precision wire tolerances designed for signal control, solenoids, and magnetic sensors in automation plants.
Application details
High-voltage winding wires and Continuously Transposed Conductors designed for substations and offshore wind turbines.
Application detailsRead about manufacturing upgrades, export projects, and emerging technology trends in magnet wires and conductors.
Analyzing material choices and efficiency gains in enameled aluminum wire systems amidst volatile non-ferrous metal prices.
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Detailed performance comparison between pure copper and copper-clad aluminum wire (CCA) in high-frequency applications.
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Tracking the deployment of Daiming's Continuous Transposed Conductors in Eurasian UHV power grid upgrade projects.
Read Full Article →Answers to technical specifications and customization queries regarding paper-coated copper wire products.
Browse our selection of magnet wires, flat profiles, and aluminum core enameled wires manufactured to international specifications.
