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LT & HT Power Transformers Solutions

Oil-immersed Transformers

Our Oil-immersed Transformers (S9/S11/S13 series), built for superior cooling, high capacity, and exceptional longevity in outdoor power grids. Risen Electric leverages a multi-factory supply network to provide highly customized oil-filled solutions, including specific tap changers and vector groups. Trust our end-to-end supply chain management and strict pre-shipment inspections to deliver reliable utility-grade equipment.

Grid List
  • Three Phase Oil Immersed Transformer
    33kV 11kV Three Phase Oil Immersed Step Down Transformer
    A 33kV/11kV oil-immersed transformer specifically designed for regional main step-down substations. It has demonstrated outstanding performance in large-scale power grid construction in Africa and the Middle East, serving as a key node connecting the main grid and terminal distribution networks.
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  • Three Phase Immersed Distribution Transformer
    Three Phase Immersed Distribution Transformer S11 S13 50kVA 2500kVA 10kV 11kV 0.4kV
    The S11/S13 series oil-immersed distribution transformers are widely used across the globe. Renowned for their exceptional cost-performance ratio, high reliability, and remarkably long service life, they have become a "mainstay" in urban and rural power grids as well as in industrial and commercial power distribution.
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  • 63MVA High Voltage Transformer
    10-63MVA 66/110kV Three Phase Power Transformer with LTC
    A core component for large-scale hub substations—the 110kV-class power transformer. It features On-Load Tap Changer (OLTC) functionality, enabling smooth voltage regulation without interrupting the power supply, with a maximum capacity of up to 63 MVA per unit.    
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  • Hermetic Corrugated Tank Transformer
    100-2500kVA FR3 Natural Ester Sealed Oil Transformer
    This eco-friendly, fully sealed, oil-immersed transformer is available with an option for FR3 vegetable-based insulating oil. Featuring a design without an oil conservator, it is more compact and causes no environmental pollution, making it an ideal choice for city centers and ecological reserves.    
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  • Self Protected Pole Mounted Distribution Transformer
    10-167kVA Single Phase CSP Pole Mounted Oil Transformer
    A classic single-phase pole-mounted transformer designed specifically for distributed electrical loads in rural and remote areas. It features CSP (Completely Self-Protected) functionality—integrating fuses and lightning arresters—which greatly simplifies on-site installation and subsequent maintenance.    
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