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8000 kVA 33kV Three-Phase Oil-Immersed Power Transformer

This oil-immersed transformer runs at 50 Hz / 60 Hz and is built for Utility substations / industrial plants / infrastructure and regional power systems. On the electrical side: According to standard / customized impedance, Mineral insulating oil insulation, ONAN / ONAF optional cooling. Copper / Aluminum windings on CRGO silicon steel, and Off-circuit tap changer / on-load tap changer optional. 60 – 65 °C temperature rise and ≤ 60 dB at 1 meter noise level. Enclosure: Conservator tank / sealed tank optional. Specification is confirmed per order, with compliance to IEC / customized project specification as applicable to the order. Typical 30-day delivery, two years warranty, MOQ one set.

Technical Parameters & Ratings

IEC / ANSI CertifiedFactory Standard
Power Rating 8000 kVA
Primary Voltage 33 kV
Secondary Voltage 6.3 kV / 6.6 kV / 10 kV / 11 kV / customized
Phase Three Phase
Cooling Type ONAN / ONAF optional
Core Material CRGO silicon steel
Connection Group YNd11 / Dyn11 / Yyn0 / customized
Winding Material Copper / Aluminum
Frequency 50 Hz / 60 Hz
Insulation Mineral insulating oil
Tap Changer Off-circuit tap changer / on-load tap changer optional
Short-circuit impedance According to standard / customized
Temperature Rise 60 – 65 °C
Noise Level ≤ 60 dB at 1 meter
Enclosure Conservator tank / sealed tank optional
Altitude ≤ 1,000 m or customized
Ambient Temperature Range -30 °C to +50 °C
Accessories Buchholz relay, oil level gauge, thermometer, pressure relief device, valves
Standards Compliance IEC / customized project specification
Applications Utility substations / industrial plants / infrastructure and regional power systems
Transport & Installation Outdoor
Warranty Two years
Delivery Time Typically 30 days, depending on quantity
Min. order quantity ≥ 1 set

Technical Highlights

  • This product combines dependable transformer platform design, flexible project configuration, and practical export-oriented construction. It is suitable for applications requiring stable electrical performance, configurable voltage ratios, outdoor durability, and documentation support for international project supply.

Application Scenarios

  • Utility substations
  • Industrial plants and heavy-load facilities
  • Infrastructure and public utility projects
  • Regional transmission and distribution networks
  • Commercial and industrial power systems

Key Features

  • 8000 kVA rated capacity for medium- to large-scale transmission and distribution projects
  • high-voltage design suitable for substations and industrial power systems
  • Oil-immersed structure for stable cooling performance and dependable long-term operation
  • Available with copper or aluminum windings according to project and budget requirements
  • Suitable for IEC-based specifications and project-oriented customization
  • Outdoor installation design with configurable accessories and protection devices

Optional Configurations

  • Low-voltage side rating and voltage ratio
  • Frequency: 50 Hz or 60 Hz
  • Vector group and tapping range
  • Copper or aluminum winding
  • Cooling method, accessory package, and monitoring option
  • Tank structure, coating system, and special environmental adaptation
  • Color, nameplate language, and document package
  • Ambient temperature, altitude, and installation condition adaptation

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