>> Product Introduction
The 2800kVA three‑phase oil‑immersed split‑winding transformer steps down 10kV primary to two independent 0.6kV secondary outputs. Its Dy11d0 vector group effectively suppresses triplen harmonics and suits multi‑pulse rectifiers, VFDs, and industrial drives. Housed in a hermetically sealed tank with mineral oil, it ensures robust cooling, moisture resistance, and long service life even in harsh environments like mines, petrochemical plants, and steel mills. Fully compliant with IEC 60076 and IEEE C57, it delivers stable, efficient, and safe power distribution for critical infrastructures.
Product Advantage
1. Precise Voltage Regulation & Dual‑Output Flexibility
Each secondary winding can be independently loaded up to 1400kVA with a tap changer (±2.5% regulation) under fluctuating grid conditions. This split design eliminates an extra transformer for separate low‑voltage networks, saving floor space and capital cost while providing load segregation and enhanced reliability.
2. Superior Harmonic Cancellation & Galvanic Isolation
The Dy11d0 connection reduces total harmonic distortion by up to 60% compared to conventional Yyn0 designs, protecting sensitive drives and PLCs from overheating and nuisance tripping. With 95kV impulse withstand capability, it offers complete galvanic isolation, shielding downstream equipment from surges and transient overvoltages.
3. Comprehensive Safety against Electrical Hazards
Independent secondary windings act as fault barriers—a short circuit on one side does not affect the other, ensuring continuous operation of critical loads. The oil‑immersed construction provides high dielectric strength and thermal inertia, minimising arc‑flash and insulation failure risks, while optional pressure relief and temperature monitors enhance personnel and asset protection.
4. Advanced Energy‑Loss Reduction
Using high‑permeability grain‑oriented steel and low‑loss windings, the transformer achieves no‑load losses ≤0.7% and load losses ≤1.1%, with a peak efficiency of 99.1%. Optimised flux design cuts transmission waste by over 38% versus traditional models, lowering operating costs and carbon footprint, and extending insulation life beyond 30 years.
