HV LV Voltage Copper Aluminum Winding Coils
09-23 2025 | By:
Dry-type transformer coils—known as
Hv LV Voltage Copper Aluminum Winding Coils—are the “heart” of power distribution systems. As a leading manufacturer,
ZTELEC YUGUANG delivers coils with standardized specs, customizable options, and reliable performance, covering high-voltage (Hv)、low-voltage (Lv)、copper and aluminum variants. Below is a detailed breakdown of common parameters, technical advantages, and why ZTELEC YUGUANG is the top choice.
Hv LV Voltage Copper Aluminum Winding Coils
- Hv Winding Coils: Standard voltage range 10kV-35kV (customizable up to 110kV for special projects). Rated insulation level: 10kV class (35/75/170kV impulse voltage), 35kV class (70/140/325kV impulse voltage)—ensuring resistance to voltage surges in medium-voltage grids.
- Lv Winding Coils: Fixed voltage at 0.4kV (400V) for general use; customizable to 0.69kV/0.72kV for industrial equipment. Insulation level: 0.4kV class (3/6/10kV impulse voltage), meeting residential, commercial, and small industrial power needs.
ZTELEC YUGUANG offers both copper and aluminum coils, with conductor specs tailored to current-carrying demands:
- Copper Winding Coils: Uses high-purity oxygen-free copper wire (purity ≥99.95%). Standard wire diameter: 0.8mm-5.0mm (for Lv coils); 1.2mm-8.0mm (for Hv coils). DC resistance at 20℃: ≤0.015Ω (for 50kVA Lv coils), ≤0.5Ω (for 10kV 2500kVA Hv coils)—lower resistance reduces energy loss by 8-12%.
- Aluminum Winding Coils: Adopts high-conductivity aluminum wire (purity ≥99.7%) with electrophoretic coating (thickness 8-12μm) for anti-oxidation. Wire diameter: 1.0mm-6.0mm (Lv); 1.5mm-10.0mm (Hv)—larger cross-section ensures conductivity close to copper (conductivity ratio: aluminum 61% of copper, but cost 40% lower).
- Insulation Grade: Class H (180℃) as standard; Class F (155℃) optional. Insulation material: Glass fiber reinforced plastic (FRP) + epoxy resin (VPI vacuum pressure impregnation process)—water absorption rate ≤0.1%, ensuring long-term insulation stability in humid environments.
- Temperature Rise Limit: Under rated load, Lv coil temperature rise ≤60K (Class H), Hv coil temperature rise ≤50K (Class H)—tested via ASTM D2471 standard, avoiding overheating-induced aging.
- Short-Circuit Current: Lv coils withstand 25kA/2s short-circuit current; Hv coils withstand 12.5kA/2s (customizable to 31.5kA/2s for high-demand industrial scenarios)—coil structure uses reinforced bobbins to prevent deformation.
- Capacity Matching: Suitable for transformers of 50kVA-2500kVA (most common specs: 100kVA, 250kVA, 500kVA, 1000kVA, 2000kVA). Number of turns: 50-500 turns (adjustable based on voltage and capacity).
ZTELEC YUGUANG doesn’t just meet standard specs—we optimize parameters for practicality and cost-efficiency:
- Parameter Customization: For non-standard needs (e.g., 6kV Hv coils, 0.5kV Lv coils, thickened insulation), our R&D team (20+ senior engineers) adjusts wire diameter, turns, and insulation thickness within 7 working days.
- Raw Material Control: Copper wire sourced from Jiangxi Copper (top 3 global copper producers); aluminum wire from Chinalco—ensuring conductor specs meet GB/T 3956 standard, no deviation in diameter or purity.
- 100% Spec Verification: Each coil undergoes parameter testing before delivery: DC resistance test (to confirm conductivity), voltage withstand test (to verify insulation level), temperature rise test (to check heat resistance)—test reports provided to customers, ensuring specs match actual performance.
ZTELEC YUGUANG’s Hv LV Voltage Copper Aluminum Winding Coils are applied based on parameter matching:
- 10kV Hv + Copper Coils (500kVA-2500kVA): Used in industrial workshops (steel plants, chemical plants) and substations—high conductivity and short-circuit resistance meet heavy-load needs.
- 35kV Hv + Aluminum Coils (100kVA-1000kVA): Applied in rural power grids and infrastructure—cost-effective and lightweight, reducing installation difficulty.
- 0.4kV Lv + Copper Coils (50kVA-500kVA): Suitable for data centers, hospitals, and shopping malls—low resistance ensures stable power for sensitive equipment.
- 0.4kV Lv + Aluminum Coils (50kVA-250kVA): Used in residential communities and small factories—budget-friendly with reliable insulation.
High-Voltage (HV) and Low-Voltage (LV) cast resin winding coils,
If you need detailed spec sheets (including parameter tables, test reports) for Hv LV Voltage Copper Aluminum Winding Coils, or want to customize parameters:
- Email us at info@ztelecgroup.com with your required voltage, capacity, material (copper/aluminum), and application scenario.
- Visit our official website to download standard spec documents (PDF format).
- Contact our 24-hour technical support hotline (+86-15716749170) for parameter consultation.
ZTELEC YUGUANG provides free sample testing (shipping cost covered for bulk orders) and a 5-year warranty—ensuring your coils meet specs and perform reliably.
When choosing
Hv LV Voltage Copper Aluminum Winding Coils, clear specs are the foundation of a successful purchase.
ZTELEC YUGUANG’s standardized parameters, customizable options, and strict quality control make us the trusted manufacturer for global customers. Whether you need off-the-shelf coils or custom specs, we deliver solutions that balance performance, cost, and durability.
