Oil-filled transformers

Power oil-filled transformers with a capacity of up to 400 MVA and a voltage of up to 330 kV inclusive, for operation in any conditions.

Main advantages

High reliability and product quality

Minimum ambient temperature

Cooling system

High overload capacity

01 High reliability and product quality

The high reliability of transformers has been developed taking into account the specifics of operation in various industries and at various energy facilities, and has been confirmed by test reports in independent test centers.

02 Minimum ambient temperature

Transformers can be operated at a minimum ambient temperature of -60 °C.

03 Cooling system

A wide range cooling systems ensures reliable heat dissipation, increasing the efficiency of the transformer, extending its service life and ensuring stability under load.

04 High overload capacity

Oil transformers can operate with overload for a long time without significant deterioration in performance.

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Questionnaires

Questionnaire - Transformers

Service we provide with this product

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24/7 Customer support

Service center and regional support centers

Service

Warranty service

Development of design concepts

Technical and economic evaluation

Предоставление технических характеристик

Development of an electronic project for a digital substation (DSP)

Documentation in English and other languages

Oil-filled transformers up to 330 kV is used:

ELM PS 35 kV

ELM PS 110 (220) kV

Market-Specific Solutions

25 years of working with Customers from various industries have allowed us to study industry specifics in detail and create individual solutions that fully meet the needs of this industry and the requirements of individual Customers from this industry.

Oil, Gas and Petrochemistry

Generation, Transmission&Distribution of Electrical Energy

Industry&Infrastructure

Renewable energy

Satisfied customers
about products and cooperation with us

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JSC HIGHLAND GOLD

Dear Valery Vladimirovich!

The international company HIGHLAND GOLD JSC, represented by Base Metals JSC, expresses its gratitude to you for the supply of complete transformer and distribution equipment of the Kekura gold extraction plant of high quality.

I would like to express my gratitude to Sergey Bryzgalov for his high professionalism, efficiency in decision-making and delivery of the required modernization kits, for teamwork in replacing cell equipment while maintaining warranty obligations, and I would also like to mention the staff of your subcontractor led by Vladimir Zhdanov, who actually completed the assembly of transformers on the construction site for the first time in history. in an extremely short time, taking into account the alignment of the remaining transformers from the supply (damaged during transportation).

I sincerely wish your company prosperity and further success in implementing new projects.

Dear Valery Vladimirovich!

I sincerely wish your company prosperity and further success in implementing new projects.

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Partners

News and publications about the product Go to the Media

2 September 2025 News

Delivery of 6 10 kV transformer substations for the Renera-Energtek LLC plant in the Kaliningrad region has been completed

“Electronmash” has successfully fulfilled its obligations for the manufacturing and supply of electrical equipment as part of the creation of production facilities for lithium-ion cells, modules, traction batteries for electric transport, and stationary energy storage systems.

26 June 2025 Publications

JSC Electronmash is not only a supplier, but a full—fledged partner who lives and thinks about solving the Customer's problems.

Today we are a full—cycle manufacturing company with our own engineering, design and technological competencies. The range of manufactured equipment includes a wide range of solutions for digital substations and industrial facilities. Our solutions are used in facilities where losses are not comparable to the cost of equipment, and reliability and trouble— free operation are key requirements.

14 February 2025 News

Electronmash has mastered vacuum packaging technology to protect electrical equipment.

Electronmash specialists are expanding their range of services and introducing a new packaging method for long-term storage and transportation of products in difficult climatic conditions.

16 December 2024 News

Electronmash will manufacture and supply 120 35/0.69 kV substations for the Novolakskaya WPP.

JSC "Electronmash" has signed a contract with JSC "VetroOGK-3" within the framework of the project for the construction of the largest wind power plant in Russia.

15 September 2024 News

Electronmash has manufactured and supplied a 6/0.4 kV workshop substation for JSC NZNP, and will also perform installation supervision.

Electronmash has successfully fulfilled its obligations to manufacture and supply electrical equipment as part of the project to build a complex for deep processing of crude oil and medium distillates.

19 August 2024 News

Electronmash has completed a turnkey project for the construction of a 110/10 kV substation for the solar park of the Laganskaya SPP.

The company has signed a major contract with Unigreen Engineering LLC for the construction of a transformer substation with a capacity of 63 MW.

25 December 2023 News

Electronmash has implemented a project to modernize energy supply for Gazpromneft Omsk oil refinery JSC.

The company has manufactured and supplied four modular transformer substations and a unique energy storage system as part of the expansion of the capacity of the solar power plant.

25 September 2015 News

Sarutayuskaya 35/6 kV substation for LUKOIL-Komi LLC

As part of the execution of the contract for the Sarutayuskaya 35/6 kV substation (Lukoil-Komi LLC), an inspection of equipment production was carried out.

25 September 2008 Publications

Dry transformers T3R are a modern solution!

"Electronmash" represents the Italian company "GBE s.r.l" on the Russian market, a manufacturer of T3R dry-type transformers with cast insulation.

25 August 2008 Publications

Dry transformers. Reliability and safety

Viktor Ukrainsky, Deputy Director for Marketing and Sales at Electronmash, comments on the situation on the dry transformer market.