Oil-Immersed Distribution Transformers

High-Efficiency 33kV 2500kVA Energy-Saving Oil-Immersed Distribution Transformer (Copper Winding)

Built for utility and industrial power networks, this energy-saving oil-immersed distribution transformer steps 33kV down to 415V with a high-efficiency…

Technical specifications

Technical specifications of High-Efficiency 33kV 2500kVA Energy-Saving Oil-Immersed Distribution Transformer (Copper Winding)
ParameterValue
Product TypeOil-Immersed Distribution Transformer
Rated Capacity2500 kVA
Input Voltage33 kV
Output Voltage415 V
Frequency50 / 60 Hz
PhaseThree
Winding MaterialCopper / Aluminium
Vector GroupDyn11 / Yyn0 / Yd11 / YNd11 / Dyn5
FeatureHigh Efficiency, Energy Saving
StandardIEC / GB
CertificationUL, CE, ISO9001, EAC, ISO14001, ISO45001

These specifications reflect the product data supplied. Final dimensions, materials, colors, and packaging are confirmed at the sample and order stage.

Why buyers choose it

  • A high-efficiency, energy-saving build
  • Three-phase step-down from 33kV to 415V at 2500kVA
  • Copper winding option that reduces losses and boosts durability
  • A fully sealed tank with corrugated radiators for efficient cooling
  • International certification: UL, CE, ISO9001, EAC, ISO14001, ISO45001

Standards & certification

Designed and tested to IEC / GB. Millenium production is certified to ISO 9001, ISO 14001 and ISO 45001; the product family carries CE (ECM), UDEM attestation and an EAC declaration of conformity. Every unit passes routine factory tests before dispatch.

Product details

Built for utility and industrial power networks, this energy-saving oil-immersed distribution transformer steps 33kV down to 415V with a high-efficiency design. Rated at 2500kVA and available with copper (or aluminium) windings, it runs reliably with low losses at 50Hz or 60Hz inside a fully sealed tank equipped with corrugated radiators.

Design & Construction

  • A rectangular steel tank fitted with corrugated fin radiators
  • A horizontal cylindrical conservator tank for oil expansion
  • HV porcelain bushings and LV bushings mounted on the tank cover
  • A steel channel base that supports stable installation
  • Fully sealed construction that limits oil oxidation

Applications

This transformer suits 33kV utility substations, industrial power supply, renewable-energy plants, and distribution networks that need high-efficiency step-down conversion.

Customisation Options

Capacity, voltage ratio, vector group, cooling configuration, and certification can be adapted to project needs, with copper or aluminium winding material available on request.

Ordering Information

When placing an order, please specify the rated capacity, primary/secondary voltage, frequency, vector group, and the applicable standard.

Product details in pictures

High-Efficiency 33kV 2500kVA Energy-Saving Oil-Immersed Distribution Transformer (Copper Winding) — detail 1
High-Efficiency 33kV 2500kVA Energy-Saving Oil-Immersed Distribution Transformer (Copper Winding) — detail 2
High-Efficiency 33kV 2500kVA Energy-Saving Oil-Immersed Distribution Transformer (Copper Winding) — detail 3
High-Efficiency 33kV 2500kVA Energy-Saving Oil-Immersed Distribution Transformer (Copper Winding) — detail 4

Frequently asked questions

What is the rated capacity of the High-Efficiency 33kV 2500kVA Energy-Saving Oil-Immersed Distribution Transformer (Copper Winding)?

The rated capacity is 2500 kVA, with an input voltage of 33 kV. Other ratings in the same series are quoted on request.

What are the main advantages of this oil-immersed transformer?

A high-efficiency, energy-saving build; Three-phase step-down from 33kV to 415V at 2500kVA; Copper winding option that reduces losses and boosts durability.

Can this product be customised to my specification?

Capacity, voltage ratio, vector group, cooling configuration, and certification can be adapted to project needs, with copper or aluminium winding material available on request.

Which standards and certifications apply?

Designed and tested to IEC / GB. Millenium production is certified to ISO 9001, ISO 14001 and ISO 45001, and the product family carries CE (ECM), UDEM attestation and an EAC declaration of conformity.

Quotation

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