200MVA 250MVA Power Transformer

200 MVA High-Voltage Power Transformer   Designed for outdoor installation, Yawei's 200 MVA oil-immersed power transformer delivers exceptional reliability and operational efficiency for demanding electrical grids. Manufactured in accordance with international standards including DSTU and DSTU EN 60076-1, this three-phase unit is engineered for a minimum 30-year service interval before requiring major maintenance.   Technical Specifications Rated Power: 200 MVA HV Winding: 220 kV nominal / 242 kV rated / 252 kV maximum operational voltage LV Winding: 18 kV nominal / 29 kV rated / 19.8 kV maximum operational voltage Neutral Terminal: 110 kV Cooling Method: OFAF (Oil-Directed Air-Forced) Tap Changer: On-Load Type (±2×2.5% range) Short-Circuit Impedance: 11% Excitation Current: ≤0.22% Energy Efficiency: Conforms to Ecodesign Tier 2 requirements Short-Circuit Withstand: Complies with DSTU EN 60076-5   Dielectric Performance Lightning Impulse (Full Wave): HV 750 kV / LV 125 kV / Neutral…