250MVA power transformer

3 month ago

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Product details

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 400 kV
Lightning Impulse (Chopped Wave): HV 835 kV / LV 150 kV
Power Frequency Withstand (1 min):
HV 325 kV (phase-ground) / 395 kV (phase-phase)
LV 50 kV (phase-ground)
Neutral 200 kV

Physical Parameters

Dimensions: 10.5 × 5.5 × 8.7 meters (L×W×H)
Weights: Transport 185.5 t / Operational 160 t / Oil 32.5 t
Finish: Light gray protective coating
Mobility: Rail-mounted for positional adjustment

Safety & Monitoring

Acoustic Emission: ≤85 dB at 2m distance
Protection Systems: Pressure relief, oil/winding temperature monitoring
Control Cabinets:
Galvanized corrosion-resistant construction
Automated cooling control with temperature feedback
Integrated illumination, power outlets, and thermostatic heating
Stainless steel/galvanized material construction

This transformer exemplifies Yawei's commitment to manufacturing robust power solutions that meet stringent international standards for performance, safety, and longevity. Ideal for critical transmission applications, it combines advanced engineering with practical operational features to ensure reliable power delivery in demanding environments.

Yawei's Most Competitive Products:

Pad Mounted Transformer, Power Transformer, Distribution Transformer, Pole Mounted Transformer

If you have any inquiries, please contact me immediately.

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Jiangsu Yawei Transformer Co., Ltd.

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Main Product: Power Transformer, Distribution Transformer, Pad Mounted Transformer, Pole Mounted Transformer, Substation Transformer , Dry Type Transformer

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