500 kVA 11kV S20 High-Efficiency Three-Phase Oil Transformer

Oil-Immersed Transformers · High Efficiency (S22)

500 kVA S20 High-Efficiency Three-Phase Oil Transformer

This 500 kVA high-efficiency three-phase oil transformer is intended for distribution projects that prioritize reduced no-load loss, stable service life, and practical export-oriented configuration. Depending on the model, it uses an optimized core design to support energy-saving performance in utility and industrial networks.

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Technical Specifications

Rated Capacity 500 kVA
High Voltage 11 kV
Low Voltage 0.4 kV / 0.415 kV / 0.433 kV / customized
Frequency 50 Hz / 60 Hz
Phase Three Phase
Cooling Method ONAN
Vector Group Dyn11 / Yyn0 / YNd11 / customized
Tap Changer Off-circuit tap changer
Tapping Range ±2 x 2.5% / ±5% / customized
Winding Material Copper / Aluminum
Core Material CRGO silicon steel
Insulation Medium Mineral insulating oil
Model Series S20
Tank Type Corrugated tank / conservator tank optional
Impedance Voltage According to standard / customized
No-Load Loss According to standard / customized
Load Loss According to standard / customized
Standard IEC / customized project specification
Installation Outdoor
Application Utility distribution / industrial power / infrastructure projects

Pricing & Availability

Reference FOB Price

USD 4700

Public Marketplace Range

$2,600 – $4,950

Based on public listings. Often lead-generation or minimum-config prices — not full-scope.

Minimum Order

1 Set

Units in Stock

5

Model / Series

S20

Indicative export reference only. Final offer depends on voltage, standards, materials, accessories, and project scope. Request a firm quote →

Product Information

Product ID

500_KVA_11KV_S20_HIGH_EFFICIENCY_THREE_PHASE_OIL_TRANSFORMER

Last Updated

2026-04-06 00:58:37.163595

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 distribution networks
  • Industrial plants and workshops
  • Commercial buildings and mixed-use developments
  • Public infrastructure projects
  • Regional and municipal power distribution systems

Key Features

  • 500 kVA rated capacity with optimized core design for energy-saving applications
  • Three-phase oil-immersed structure for stable outdoor operating performance
  • class configuration suitable for distribution and industrial feeder networks
  • Low-loss design approach intended to reduce operating cost over service life
  • Supports project-based winding, voltage ratio, and accessory customization
  • Suitable for utility and industrial buyers prioritizing efficiency and life-cycle value

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

Standards & Compliance

The product can be produced according to IEC standards and customer technical specifications. Routine factory tests, inspection records, and technical documentation can be provided before shipment. Optional configurations for project-specific grid, environmental, and accessory requirements are available upon request.

Packaging, Delivery & Service

The product is prepared for export shipment with suitable packing and transport arrangements based on destination and handling requirements. Technical documents, test reports, nameplate confirmation, and pre-shipment support can be supplied according to order requirements. OEM/ODM support and project-based coordination are available for qualified inquiries.

Please send us your required capacity, high voltage, low voltage, frequency, cooling preference, and installation conditions for the 500 kva s20 high-efficiency three-phase oil transformer. Our team can recommend a suitable configuration and provide a quotation based on your project requirements.

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