Power Transformers (up to 110 kV)

110 kV / 12500 kVA Dual-Winding Power Transformer

This three-phase, dual-winding oil-immersed transformer is rated 12500 kVA and steps a 110 kV supply down to 15 kV for substation and distribution networks.…

Technical specifications

Technical specifications of 110 kV / 12500 kVA Dual-Winding Power Transformer
ParameterValue
Product TypeThree-Phase Dual-Winding Oil-Immersed Power Transformer
Rated Capacity12500 kVA
Input Voltage (HV)110 kV
Output Voltage (LV)15 kV
Frequency50 / 60 Hz
PhaseThree
Winding MaterialCopper / Aluminium
Vector GroupDyn11 / Yyn0
CoolingONAN / ONAF (oil-immersed, radiator)
StandardIEC / GB
CertificationUL, IEC, CE, ISO9001, ISO14001, ISO45001, CQC, GOST, EAC
PackingWooden Case

Figures shown reflect the supplied product data. Exact dimensions, materials, finish and packaging are confirmed at sample approval and order confirmation.

Why buyers choose it

  • 110 kV / 12500 kVA dual-winding design at factory-direct pricing
  • Sealed oil-immersed tank with radiator cooling and conservator
  • Dyn11 / Yyn0 vector groups fit substation single-line layouts
  • Low-loss copper or aluminium windings for strong efficiency
  • Certified UL, IEC, CE, ISO9001/14001/45001, CQC, GOST, EAC

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

This three-phase, dual-winding oil-immersed transformer is rated 12500 kVA and steps a 110 kV supply down to 15 kV for substation and distribution networks. Supplied factory-direct, it's built with a sealed steel tank, radiator cooling and a conservator oil-expansion system for efficient, dependable transformation. Windings come in copper or aluminium, meeting IEC/GB requirements.

Design & Construction

The sealed tank carries high-voltage porcelain bushings, a top-mounted conservator for oil expansion, side radiator banks, and a cabinet for monitoring and protection gear. This dual-winding, oil-immersed build keeps cooling efficient and insulation stable for reliable substation and distribution service.

Applications

Fits utility and industrial substations, transmission and distribution networks, renewable-energy installations, and large facilities that need 110-kV-class transformation.

Customisation Options

Capacity, HV/LV voltage, vector group, tap-changer type, cooling class and fittings can be tailored to a project's single-line requirements.

Ordering Information

  • Selling Unit: Single item
  • Packing: Wooden Case
  • Standards: IEC / GB; certified UL, IEC, CE, ISO9001/14001/45001, CQC, GOST, EAC

Product details in pictures

110 kV / 12500 kVA Dual-Winding Power Transformer — detail 1
110 kV / 12500 kVA Dual-Winding Power Transformer — detail 2
110 kV / 12500 kVA Dual-Winding Power Transformer — detail 3
110 kV / 12500 kVA Dual-Winding Power Transformer — detail 4

Frequently asked questions

What is the rated capacity of the 110 kV / 12500 kVA Dual-Winding Power Transformer?

The rated capacity is 12500 kVA, with an input voltage of 110 kV. Other ratings in the same series are quoted on request.

What are the main advantages of this power transformer?

110 kV / 12500 kVA dual-winding design at factory-direct pricing; Sealed oil-immersed tank with radiator cooling and conservator; Dyn11 / Yyn0 vector groups fit substation single-line layouts.

Can this product be customised to my specification?

Capacity, HV/LV voltage, vector group, tap-changer type, cooling class and fittings can be tailored to a project's single-line requirements.

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

Request a quotation for this product

Tell us the rating, voltages, frequency, quantity and destination. An engineer replies with a technical proposal, usually within one working day.

Include your country code, e.g. +1, +44, +966
Helpful details: rated power, HV/LV voltages, frequency, standard (IEC / ANSI / GOST), quantity, site conditions and delivery port.
Ask on WhatsApp