2500 kVA 33kV S11 Three-Phase Oil-Immersed Distribution Transformer

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2500 kVA 33kV S11 Three-Phase Oil-Immersed Distribution Transformer

This 2500 kVA oil-immersed distribution transformer is designed for dependable power distribution in utility, industrial, and commercial networks. It provides stable electrical performance, practical oil-based cooling, and flexible configuration options for export projects requiring reliable outdoor service and configurable voltage ratios.

Technical Parameters & Ratings

IEC / ANSI CertifiedFactory Standard
Rated Capacity2500 kVA
Primary Voltage (U1)33,000 V (33 kV)
Secondary Voltage (U2)415 V / 240 V (3-Phase 4-Wire)
Vector GroupDyn11
Rated Frequency50 Hz
Cooling MethodONAN (Oil Natural Air Natural)
Primary Current (I1)43.74 A
Secondary Current (I2)3478.0 A
Guaranteed No-Load Loss (P0)2300 W
Guaranteed Load Loss (Pk at 75°C)17500 W
Short-Circuit Impedance (Uk)5.0%
HV Insulation LevelLI 170 / AC 70 (33kV Class)
Temperature Rise LimitsTop Oil ≤ 50K, Winding ≤ 55K (45°C Ambient)
Creepage Distance≥ 31 mm/kV (Outdoor Tropicalized Porcelain)
Core & Coil Weight3600 kg
Insulating Oil Weight2100 kg
Total Assembled Weight7200 kg
Overall Footprint (L×W×H)2100 mm × 1350 mm × 2200 mm
Governing StandardsIEC 60076, BS 171, SON NIS, NERC Code

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

  • 2500 kVA rated capacity for distribution network and industrial feeder applications
  • class design suitable for utility and regional power distribution systems
  • Oil-immersed structure for stable thermal performance and dependable outdoor operation
  • Available with copper or aluminum windings according to project and budget requirements
  • Supports IEC-based specifications and project-oriented voltage configuration
  • Configured for long service life, practical maintenance, and export project supply

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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