Three-phase Oil-immersed On-load Voltage Regulating Power Transformer

Name: "Three-phase Oil-immersed On-load Voltage Regulating Power Transformer"
Rating: 5 (172 reviews)

SKU: 3165851433

Modelo: 4667349514

Apex Power Systems （Nanjing）Co., Ltd.

Entrar na loja

Detalhes da mercadoria

Product Specification

Type	Three-phase Oil-immersed On-load Voltage Regulating Power Transformer	Model	SFZ-250000/345 （250MVA/345kV）
Params	Rated capacity: 250/250 MVA Rated voltage: 345/34.5 kV Rated current: 418/4184 A Frequency: 60 Hz Vector group: Dyn1 Cooling: ONAN (185 MVA) / ONAF1 (225 MVA) / ODAF2 (250 MVA) Tap range: (345 +17/-17 × 0.625%) / 34.5 kV Lightning impulse withstand: HV 1175 kV / LV 200 kV Switching impulse withstand: HV 975 kV Insulation: paper-oil insulation, fully sealed, outdoor type OLTC: 3×SHZVI-400/363C-18353W	Material	Core: high-permeability grain-oriented silicon steel, fully mitered joints Windings: oxygen-free copper conductors with paper insulation Insulation system: paper-oil composite insulation (Kraft paper + mineral oil) Tank: high-strength welded steel tank with corrugated radiators / radiators Cooling medium: high-flash-point mineral oil or natural ester oil Surface treatment: outdoor anti-corrosion coating, salt-spray tested On-load tap changer: German MR / ABB brands
Applicable Industry	Global grid construction and transmission projects Large AI computing centers and data centers Step-up substations for wind, solar and energy-storage plants Premium industrial parks and heavy industry International EPC power projects

Feature

1. KEMA Labs certification; passed the full IEC 60076 test program 2. Siemens simulation-assisted optimization: compact design, low weight, low losses, low partial discharge and low noise 3. Successfully delivered for a 345 kV U.S.–Georgia project, with proven overseas experience 4. In-house testing capability up to 500 kV; a 765 kV ultra-high-voltage test hall is under construction (Aug. 2026) 5. Flexible ONAN / ONAF / ODAF cooling configurations for different climates and load profiles 6. Fully sealed construction for extended service life and long maintenance intervals 7. OEM / ODM customization available; supports IEEE, IEC and ANSI standards

Three-phase Oil-immersed On-load Voltage Regulating Power Transformer