800 kVA 11kV S22 Amorphous Alloy Three-Phase Oil Transformer

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800 kVA 11kV S22 Amorphous Alloy Three-Phase Oil Transformer

This 800 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.

Technical Parameters & Ratings

IEC / ANSI CertifiedFactory Standard
Rated Capacity800 kVA
Primary Voltage (U1)11,000 V (11 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)14.0 A
Secondary Current (I2)1113.0 A
Guaranteed No-Load Loss (P0)980 W
Guaranteed Load Loss (Pk at 75°C)6700 W
Short-Circuit Impedance (Uk)4.5%
HV Insulation LevelLI 75 / AC 35 (11kV Class)
Temperature Rise LimitsTop Oil ≤ 50K, Winding ≤ 55K (45°C Ambient)
Creepage Distance≥ 31 mm/kV (Outdoor Tropicalized Porcelain)
Core & Coil Weight1380 kg
Insulating Oil Weight820 kg
Total Assembled Weight2680 kg
Overall Footprint (L×W×H)1580 mm × 1020 mm × 1680 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

  • 800 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

Frequently Asked Questions

What is the advantage of amorphous alloy cores?

Amorphous alloy cores have significantly lower no-load loss than conventional silicon steel, reducing energy consumption during the long periods when the transformer runs lightly loaded.

Are amorphous transformers suitable for utility distribution?

Yes. They are widely used on utility distribution networks where energy efficiency and total cost of ownership are primary selection criteria.

What standards apply to this transformer?

The unit is designed and tested to the applicable IEC or ANSI standards, with routine tests performed on every unit.

Can the transformer be customized for my network voltage?

Yes. Voltage ratio, tap range, vector group and impedance are configured to your network requirements.

What is the delivery lead time?

Standard delivery is 30 days after drawing approval, with the schedule confirmed against your final specification.

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