Design and production innovation promotion testing of electric power equipment

TET ESTEL is a company with a history dating back more than 150 years, a comprehensive track record of completing challenging and innovative projects serving multiple industries, and capable of providing solutions within short lead-times at the best in class price-to-quality ratio. Product quality and customer-oriented approach are cornerstones of our production philosophy.

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EXPERIENCE • SCIENCE • QUALITY

Exactly within the range of your requirements

Company profile

TET ESTEL TODAY

Company develops, manufactures, and supplies a broad range of power converter equipment and power semiconductors, focusing on complex technological solutions and production “turnkey” delivery.

Design and development according to your expectations

More than 50 years of engineering experience, development of hundreds of units of converting equipment, dozens of unique projects, modern design and extraordinary solutions - a business card for our partners

Production capacities for a wide range of tasks

Full production cycle, availability of space and equipment, proven technological processes, trained personnel and a well-thought-out quality control system at all stages of product manufacturing. Full electrical control of all products at our own unique testing station.

Reliable Service and prompt customer support

Our service engineers and technical specialists will provide comprehensive support at any time. The company is competent to provide a full range of services to achieve reliable and continuous operation of our equipment.

Anno 1870

1870

November 27: Factory foundation day

1894

In the Main Revel railway workshops, the construction of a special imperial train was completed

1919 - 1922

32 broad-gauge and 12 narrow-gauge steam locomotives were repaired

1924

First Baltic electric train production

1928

In 1928, electric trams were built for Tallinn, which were in use until 1965.

1945

Tallinn steam-engine repair plant is founded on Main railway workshop base

1958

The enterprise is renamed into the Plant of mercury rectifiers named after. M.I. Kalinin. Founding of a scientific base for the industry of the republic.

1959

Release of the first mercury-rectifier unit for an electric locomotive, ignitron IVS-300/5

1961

Created a Special Design Bureau for the development and production of power semiconductor devices

1965

Serial production of power semiconductor devices and converting units based on them has begun

1967

Due to changes in the production profile, the company was named: Tallinn Electrotechnical Plant named after M.I. Kalinin

1968

For the first time in the USSR, a thyristor frequency converter for electrothermia was developed and produced

1970-1971

Manufacturing of power semiconductor devices for the first Soviet Lunar rover

1972

Development and start of production of converters for high-voltage electric motors

1974

Development and production of the first converters for ground handling of aircraft

1981

Registration of the "Estel" trademark.

1990

Participation in the project for the supply of equipment for CERN (European Organization for Nuclear Research).

1999

Winning an international tender. Development of an SMES modulator for the Karlsruhe Research Center (Germany)

2001

The quality management system of the enterprise is accredited according to the international standard ISO 9001: 2001

2007

The construction of a new modern plant has been completed

2012

Renaming of the company to Tallinna Elektrotehnika Tehas "Estel" AS (AS Tallinn Electrotechnical Plant "Estel")

2014

The industrial safety management system is certified according to the international standard OHSAS 18001

2018

Development and launch of Hybrid diesel power units.

2020

The company was awarded with an AAA rating, the highest in the credit rating classification.

2021

Supply of unique equipment for the Titanium industry.

2024

Development and launch of Battery Powered units

Portfolio

Over the years, the TET ESTEL has implemented hundreds of projects in various industries

Our Portfolio

News & Events

Get to know the latest news and upcoming events of TET ESTEL

Latest publications

Advanced Features

Customer Value

We always find the best solution for your project combining your expectations with optimal price

Project Management

Commissioning

Power Semiconductor Testing

After-sales Service

Retrofit

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Project Management

TET ESTEL offers comprehensive solutions for various industries. We undertake full scale project management, starting with documents analysis up to start-up procedures adjustment.

Commissioning

In order to ensure successful and safe start-up of equipment,
TET ESTEL testing specialists visiting the site to carry out commissioning work.

Power Semiconductor Testing

We offer professional testing services for customers' thyristors and diodes, including press-pack, stud, and module types. Using advanced LEM8030 equipment, we ensure precise measurements of static and dynamic parameters, providing detailed reports to verify quality.

After-sales Service

We care about our customer, hence pay a very careful attention to after-sales service. Managers of TET ESTEL provide regular equipment monitoring to check its required specifications degree concordance and, in turn, to secure Customer satisfaction.