November 27: Factory foundation day
In the Main Revel railway workshops, the construction of a special imperial train was completed
32 broad-gauge and 12 narrow-gauge steam locomotives were repaired
First Baltic electric train production
In 1928, electric trams were built for Tallinn, which were in use until 1965.
Tallinn steam-engine repair plant is founded on Main railway workshop base
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.
Release of the first mercury-rectifier unit for an electric locomotive, ignitron IVS-300/5
Created a Special Design Bureau for the development and production of power semiconductor devices
Serial production of power semiconductor devices and converting units based on them has begun
Due to changes in the production profile, the company was named: Tallinn Electrotechnical Plant named after M.I. Kalinin
For the first time in the USSR, a thyristor frequency converter for electrothermia was developed and produced
On the occasion of its 100th anniversary, the plant was awarded the Order of the Red Banner of Labor
Manufacturing of power semiconductor devices for the first Soviet Lunar rover
Development and start of production of converters for high-voltage electric motors
Development and production of the first converters for ground handling of aircraft
Registration of the "Estel" trademark.
Participation in the project for the supply of equipment for CERN (European Organization for Nuclear Research).
Winning an international tender. Development of an SMES modulator for the Karlsruhe Research Center (Germany)
The quality management system of the enterprise is accredited according to the international standard ISO 9001: 2001
The construction of a new modern plant has been completed
Renaming of the company to Tallinna Elektrotehnika Tehas "Estel" AS (AS Tallinn Electrotechnical Plant "Estel")
The industrial safety management system is certified according to the international standard OHSAS 18001
Supply of VIU (Rectifier-Inverter Devices) to the Novocherkassk Electric Locomotive Plant (NEVZ) for the world's most powerful electric locomotive - 4ES5K "Ermak"
Development and launch of Hybrid diesel power units.
The company was awarded with an AAA rating, the highest in the credit rating classification.
Supply of unique equipment for the Titanium industry.