Specializing in large-scale SZ11, SZ18, and SZ20 series with rated capacities up to 50MVA and primary voltages reaching 110kV. These high-voltage units have undergone rigorous inspection and certification and are ready for immediate worldwide deployment to power your most demanding industrial and mining projects. Invest in proven reliability and buy with complete peace of mind.
Our portfolio of large-scale oil-immersed transformers is engineered for regional transmission hubs and heavy-duty industrial grids. Featuring proven models such as the SZ11-31500/110 and the ultra-high capacity SZ18-50000/110, we provide robust voltage regulation solutions that ensure maximum grid stability for international infrastructure projects.
To ensure your peace of mind, every high-capacity asset undergoes advanced technical validation and rigorous inspection and certification:
• High-Voltage Integrity: Comprehensive testing of 110kV and 35kV insulation levels to guarantee safe operational margins.
• Massive Load Support: Validated performance for units ranging from 10,000kVA to 50,000kVA for heavy industrial loads.
• Verified Technical History: 100% authenticity certification of original nameplates and manufacturing data, ensuring transparent sourcing.
• Specialized Global Logistics: Reinforced heavy-lift transport bases and moisture-proof packaging designed for secure international sea freight to any global port.
100% authenticity certification of original electrical parameters, verified manufacturing history, and technical documentation to ensure transparent sourcing and reliable data verification.
Rigorous mechanical integrity inspections covering windings, oil tanks, high-voltage bushings, and radiator structures to ensure peak operational readiness for heavy-duty grids.
Includes precision insulation oil filtration, vacuum drying, and high-pressure sealing tests to ensure zero leakage and peak dielectric strength for long-term service.
Full-load simulation testing with detailed insulation resistance, voltage ratio (TTR), and load-loss monitoring reports provided for every unit.
Reinforced heavy-duty steel bases and specialized moisture-proof packaging with full international trade documentation support for secure delivery to any global port..
Our carefully selected inventory (including SZ11, SZ18, and SZ20 series) offers 40%-60% cost savings while delivering performance, safety standards, and operational lifespan equivalent to new units.
Every transformer undergoes advanced electrical stress testing, professional oil chemistry analysis, and rigorous inspection and certification to ensure it meets or exceeds original factory efficiency.
Yes. We specialize in the global deployment of large assets up to 110kV / 50MVA. We provide comprehensive export documentation, testing certificates, and manage secure heavy-lift logistics to any global port.
Provide your technical requirements below, and our engineering team will match the best available assets for you within 24 hours.