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The first converting installation on semiconductors was made in January 1962.
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July 1964 saw production of the ignitron IVU-500/5 begin (the lead-ins protected by ceramic barrier).
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In 1965 the decision was made to organize the manufacturing of semi-conductor gates and the release of first serial gate VKD-200, as well as to develop high power converter installations based on mercury rectifiers and transfer them to batch production.
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In 1967, VIPE-1 rectifying invertor converters for railway traction substations (power 8 MWt) were released.
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The manufacture of the first frequency gates VCH-100, VCH-160, VCH-200 and frequency thyrirstors TCH-16, TCH-40, TCH-63, TCH-100 began in November 1968.
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In 1968 the production of TFC-1 thyristor frequency converters (with air cooling, 630 kWt, 1000 Hz) for electrothermics started.
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In 1969 the development and production of thyristor frequency converters (TFC type with water cooling, power 800-2400 kWt for electrothermics) began.
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From 1970 to 1972 the production of the second generation TFC frequency converters with water cooling (based on press-pack thyristors for electrothermics) was mastered.
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From 1972 to 1974 the production of the second generation VIPE-2 rectifying invertor converters for railway traction substations (on clamping-type power thyristors with a capacity 8 MWt) was developed.
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In 1974 and 1975 the production of frequency pulse thyristors with regenerative management of TCHI-100 and series of fast thyrstors (TBZ-160, TBZ-200, TBZ-250, TBZ-320, ТБZ-400) began.
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From 1975 to 1977 the manufacture of uninterrrupted supply units of the ABP-1 type based on a voltage inventor and interrruption for chemical manufactures was launched.
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From 1978 to 1980 the factory conducted the production of the third generation TBI converters on fast thyristors (power 100-3200kWt, frequency 500-10000Hz); the production of power high-voltage converters for synchronous and asynchronous electric drives (power up to 5000kWt, 6 kV (asynchronous) and 15kV (synchronous)); as well as the manufacture of IST-type rectifiers and the equipment of scientific centers with them.
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In 1981 a series of unified fast thyristors and diodes with competitive technical and economic parameters on diffusive technology production was developed and mastered.
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From 1985 to 1990 a new generation of converters for asynchronous high-voltage electric drive was developed (capacity up to 5000kWt, on press-pack thyristors and thermal power stations equipment.
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In 1987 the production of the third generation of power electronic devices in unified series was initiated.
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From 1991 to 1993 the production of a unified series V-MPPD rectifiers for main diesel locomotives at a current up to 8000А began.
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A series of press-pack devices (Т243-800, Т343-630, Т153-1600, Т253-1250 and Т353-1000) with competitive technical and economic parameters was developed and handed over within the framework of the joint Estel-ABB project in November 1996.
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In 1997 and 1998 development and manufacturing of a power rectifier for titanium melting in arc furnaces (output current 16000А) began.
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In 1999 and 2000 the fourth generation of TFC frequency converters was developed (based on a new element and constructive base (power 100-800kWt, frequency 500-10000Hz)), as well as a power rectifier for titanium melting in arc furnaces (output current 35000А).
