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High Efficiency 66kV Power Transformer with 100MVA Rated Power and IP23 Protection Level for Reliable Performance

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High Efficiency 66kV Power Transformer with 100MVA Rated Power and IP23 Protection Level for Reliable Performance

High-Quality 66kV Power Transformers | Reliable Performance & Custom Design
High Efficiency and Energy Saving, Stable Performance

Utilizing high-quality silicon steel sheets and advanced winding technology, our 66kV power transformers offer low no-load and load losses, ensuring high operating efficiency.

  • Compliant with international standards (IEC, ANSI, GB) for long-term, high-load operation
  • Equipped with intelligent monitoring systems for temperature control and oil level monitoring
  • Designed for stable, long-term operation in demanding environments
Customizable for Various Applications

Our transformers can be tailored to meet specific project requirements:

  • Custom capacity options (10MVA, 20MVA, etc.)
  • Multiple cooling methods available (ONAN, ONAF)
  • Flexible wiring configurations
  • Specialized designs for outdoor/indoor installation, earthquake resistance, waterproofing, and corrosion resistance

Ideal for power transmission/distribution, renewable energy projects (wind/solar), and industrial applications (factories, mines).

Reliable Quality with Global Service Support
  • Manufactured using fully automatic vacuum drying and oil filling processes
  • Certified to ISO9001, CE, and CCC standards
  • Available for third-party testing verification
  • Global distribution with comprehensive after-sales support
66kV Power Transformer technical diagram
Technical Specifications
Rated Power (KVA)High Voltage (HV)Low Voltage (KV)Connection SymbolShort Circuit ImpedanceNo-load Loss (W)On-load Loss (W)No-load Current (%)
630063 66 696.3 6.6 10.5 11YNd1198250340000.63
80009830404000.63
1000011600476000.75
1250013600565000.53
1600016300695000.49
2000019200842000.49
2500022600995000.42
31500268001200000.42
40000319001403000.39
50000386001743000.39
63000444002100000.39
Key Features
  • Low partial discharge for enhanced safety and longevity
  • Minimized energy loss for improved efficiency
  • Reduced noise operation for better environmental integration
  • Lightweight design without compromising reliability
  • Economical operation with environmentally friendly materials

Widely used in power plants, substations, and large industrial/mining enterprises. Developed using advanced domestic and international technologies with optimized core, winding, active parts, leads, and tank designs.

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