Hardened copper has long been the only viable material resisting severe short-circuit electrodynamic loads in HV transformer windings - until our high-performance alloy aluminum CTC broke this industry norm.
Our tailor-made enameled aluminum continuously transposed conductor serves as the core winding part for Changzhou XD Transformer Co., Ltd. in-house developed 110kV Class 1 high-efficiency aluminum transformer, which has successfully cleared the official short-circuit withstand test with all specs up to standard.
Regarded as the toughest reliability benchmark for transformers, short-circuit tests subject windings to violent electrodynamic force and instantaneous thermal shock, likely causing winding distortion, insulation breakdown and structural damage.
Test results of our aluminum CTC winding:
✅ No structural deformation
✅ Intact enamel insulation without cracks
✅ Electrical fluctuations within design allowance
✅ Stable performance under extreme working conditions
Key Advantages
- Precision transposition: Minimizes circulating loss to satisfy Class 1 energy efficiency and carbon reduction goals
- Compact high-strength enamel: Excellent heat resistance and dielectric property against thermal aging & short-circuit shock
- High-purity aluminum base: Stable conductivity plus enhanced tensile & bending resistance against large short-circuit current
- Lightweight & cost-efficient: Trims transformer weight and production cost vs conventional copper CTC
Full-process quality control from design, bare wire processing, enameling, transposition to outgoing inspection ensures stable operation for 110kV main transformers.
Backed by solid experience in power transmission conductive materials, we iterate aluminum & copper CTC products and provide custom solutions for top transformer manufacturers.
We will continuously refine material formulas and fabrication technologies to boost the upgrade of energy-saving transformers. Jointly with industry partners, we promote greener, higher-end power equipment and facilitate the construction of the new power system.
Feel free to reach out for technical exchanges and business cooperation!