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50mva 125mva transformer

For demanding high-voltage power distribution and transmission applications, selecting the right transformer is critical for grid stability, efficiency, and safety. Our range of high-performance 50MVA and 125MVA power transformers are engineered to meet these exacting standards. These units are specifically designed for primary voltage levels up to 132kV, making them an ideal core component for 132kv 110kv transformer networks. Built with reliability and longevity in mind, our transformers utilize a robust Oil immersed transformer design. This proven technology ensures superior insulation, effective heat dissipation, and reliable performance under continuous heavy loads, safeguarding your critical power infrastructure.


The <产品名字> series represents the pinnacle of transformer engineering, combining advanced materials with precision manufacturing. Each unit is constructed with high-grade, grain-oriented silicon steel cores to minimize no-load losses and maximize energy efficiency. The windings are meticulously made from copper or aluminum conductors, providing excellent conductivity and mechanical strength. The entire active part is housed within a rugged, leak-proof tank filled with high-grade insulating oil, which serves as both a coolant and a dielectric medium. This comprehensive design approach ensures that every <产品名字> delivers consistent, trouble-free operation in substations, industrial plants, and utility-scale renewable energy integration points.

Core Technical Specifications

  • Rated Power: 50 MVA and 125 MVA
  • Primary Voltage (HV): Up to 132 kV
  • Secondary Voltage (LV): Configurable (e.g., 33kV, 11kV, 6.6kV)
  • Frequency: 50 Hz or 60 Hz
  • Cooling Type: ONAN (Oil Natural Air Natural) / ONAF (Oil Natural Air Forced)
  • Winding Material: Copper or Aluminum
  • Insulation Class: High-temperature rated for long life
  • Impulse Withstand Level: Designed to withstand standard lightning and switching impulses
  • Taping: On-Load or Off-Circuit Tap Changer (OLTC/OCTC) options available

Performance & Design Parameters

Parameter 50MVA Unit 125MVA Unit
No-Load Loss (Po) ≤ 15 kW ≤ 28 kW
Load Loss (Pk) at 75°C ≤ 200 kW ≤ 380 kW
Impedance Voltage (Uk%) 10-12.5% (typical) 12-15% (typical)
Sound Level ≤ 70 dB(A) ≤ 75 dB(A)
Total Weight (approx.) 45 - 55 Tons 80 - 95 Tons
Oil Capacity (approx.) 12,000 - 15,000 Liters 25,000 - 30,000 Liters

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