• Total quantity of output production more than 160000 units.
• Total production of more than 55 years is 1,7 billion kVA.
• Rated voltage 6-1150 kV.
• Joint experience of transformer production is more than 7000 years.
• Transformer rated power - from 0,05 to 1250 MVA (three-phase) and 2000 MVA (bank of three single #8211; phase transformers).
• Total quantity of transformers 500-1500 kV is more than 2000 units.
• Close cooperation with well-known scientific-research institutions.
• Developed system of standard structures and technological solutions.
• High level of vertical integration (insulation materials, OLTC and etc).
• Full compliance to Customers requirement, shortest terms of delivery.

View to the past: Steps to improvement

Since 1947 the history of one of the best companies – Zaporozhye transformer factory (ZTR) – manufacturer of the transformer and the reactor equipment has been started. Within these years, ZTR strength and authority of the industry leader have been maintained and increased.

Today the complex reformation of all fields of activities is taking place at ZTR to correspond to the growing needs of the market. Large-scale activity is performed at the factory as referred to increase of own production capacities, improvement of operating efficiency. At ZTR there was prepared a series of projects purposed to achieve the production level not less than 60 GVA. Owing to the activities related to production optimization and application of up-to-date approach as related to management, during the last few years the production cycle has been shortened upon average a half as much again, and production efficiency has been increased.

Besides manufacturing of the transformer equipment, ZTR is mastering the innovation types of products – it supplies successfully the controlled shunt reactors intended for reactive power compensation on AC networks.

1947	commencement of construction of Zaporozhye transformer factory;
1949	production of the first transformer TM – 1000/10;
1950	production of the first transformer rated for voltage 35 kV and power 1.8 MVA;
1951	production of the first transformers rated for voltage 110 kV and power 5.6 and 7.5 MVA;
1953	production of the first transformers rated for voltage 220 kV and power 40 MVA;
1954	production of the first three-phase off-circuit tap changer;
1955	production of the first single-phase transformers rated for voltage 400 kV and power 90 MVA for transmission line of HPP Kuybishevskaya, Moscow;
1957	production of 10000 transformer from the date of the company startup, annual output made up 11 mln kVA;
1960-1965	production of series of autotransformers rated for power up to 250 MVA and the transformers up to 400 MVA, 330 kV;
1961-1962	production of the first within USSR of fast-acting on-load tap changers with active current-limiting resistors for transformers rated for voltage class 35 and 110 kV;
1962	production of the first three-phase autotransformer 250 MVA, 500 kV, equipped with in-built on-load tap changer; production of the first converter transformer 90 MVA for DC transmission line  ± 400 kV, Stalingrad - Donets Basin;
1966	production of the world-first single-phase autotransformer rated for voltage class 750 kV, 417 MVA, 750/500 kV for  experimental transmission line Konakovo - Moscow;
1967	production of transformers 206 MVA, 500 kV and autotransformers 167 MVA, 500/220 kV for Aswan hydraulic complex (Egypt); production of high-capacity power transformer 630 MVA, 220 kV for HPP Krasnoyarskaya (Russia);
1970	production of experimental transformer 210 MVA, 1140 kV for AC transmission line 1200 kV; production of autotransformer 267 MVA, 500/220 kV equipped with on-load tap changer in 220 kV line;
1971	production of transformer rated for 1000 MVA, 330 kV for operation as a unit with generator 800 thsd. kW at CPP Slavyanskaya, (Ukraine);
1972	production of three-phase autotransformer 560 MVA, 330/110 kV for substation “Coventry”, (USA); production of single-phase autotransformers for industrial transmission lines rated for new voltage class 750 kV: 333 MVA, 750/330 kV and 417 MVA, 750/500 kV
1975	production of the first converter transformer 175 MVA as well as the first smoothing reactor 1200 А, 4 Gn for DC transmission line ±750 kV, Ekibastuz - Centre;
1977	production of 100000-th transformer stating from the company startup, namely three-phase transformer 1 000 MVA, 330 kV for CPP Uglegorskaya, (Ukraine); development and introduction of unified  series of single-phase on-load tap changers for the main network transformers rated for power 63-250 MVA production of super-power three-phase transformer 1250 MVA, 330 kV for NPP Uzhnoukrainskaya;
1978	production of autotransformer 667 MVA, 1150/500 kV production of single-phase step-up transformers 417 MVA, 750 kV for 1000 MW units at NPP Leningradskaya; production of single-phase step-up transformers 533 MVA, 500 kV (three-phase bank capacity is 1 600 MVA) purposed for operation in unit with two generators rated for 640 MW each, HPP Sayano-Shushenskaya (Russia), as well as for thermal power plants – with generators 1 200 MW
1980	production of transformer rated for power 1 000 MVA, 500 kV, purposed for operation in unit 800 MW at CPP Ryazanskaya, (Russia);
1982-1985	development of equipment complex for DC transmission line 1500 kV: converter transformers 320 MVA rated for voltage ± 400 and ± 750 kV, equipped with power winding 500 kV;
1985	production of single-phase unit transformer 417 MVA, 1150 kV;
1987-1990	production and successful testing as for short-circuit stability of step-up transformers: single-phase unit 333 MVA, 750 kV and three-phase unit 666 MVA, 500 kV;
1990	production of the first controlled shunt reactor 60 MVAr, 500 kV;
1996	production of single-phase shunt reactors 110 MVAr for transmission line 750 kV, (Ukraine), as well as shunt reactors 33.3 MVAr, 400 and 500 kV (Egypt);
1997	production of the first three-phase controlled shunt reactor  25 MVAr, 110 kV;
1998	production of three-phase unit transformer 400 MVA, 220 kV equipped with on-load tap changer, and autotransformer 250 MVA equipped with on-load tap changer in line 220 kV; production of three-phase autotransformers 250 MVA, 330/220 kV equipped with on-load tap changer in line 220 kV (BIL 1050);
1999	single-phase transformer 62,5 MVA, 163 kV and three-phase transformer 63 MVA, 154 kV  were successfully tested for dynamic stability in test center KEMA (the Netherlands);
2000	development and production of control and monitoring systems; production of single-phase autotransformer 500 MVA, 765/345 kV with voltage regulation in 345 kV line, and of shunt reactor 120 MVAr, 800 kV;
2001	production of three-phase controlled reactor 100 MVAr, 220 kV of fundamentally new design; production of the first single-phase autotransformers 267 MVA, 400/230 kV, having transverse regulation in 220 kV line for Bulgaria;
2002	production and successful commissioning of the controlled shunt reactor rated for power 180 MVAr, 330 kV. At present, this unique product is the only in the world;
2003	setting-up of representative agency in Moscow (RF);
2005	setting-up of representative agencies in Saint-Petersburg, Krasnoyarsk, Ekaterinburg (RF), Almata (Kazakhstan); development and production of on-load tap changers for delta connection diagram of windings; production of three-phase transformer equipped with on-load tap changer, 5 MVA, 220 kV;
2006	production of single-phase transformer for transverse voltage regulation in autotransformer ATDCTN-333000/750 kV;
2007	production of phase-reversing transformer 400 MVA, 220 kV;