"ELPROM ZEM" joint stock Company is the greatest manufacturer of electrical machinery in Bulgaria and it is with almost half-a-century long experience in their manufacturing. Its production is well known in all countries from CIS and East Europe, as well as in many West European countries, Asia, Africa and Latin America.

As a result of the changes, which occurred in the Bulgarian society and its orientation to the market economy, the company has been privatized in 1997 and 67% from its capital are private property. The main shareholder, possessing the control packet of shares, is privatizing fund "BULGARIA".

• different series asynchronous electric motors with squirrel cage rotor for common industrial use, as per the requirements respectively of the Bulgarian State Standards, GOST Standards, IEC, DIN and CENELEC, with degree of protection IP 23, IP 44, IP 54 and IP 55, from 2 to 8 poles, power outputs from 11 to 315 kW, for supply voltage 380 V, 50 Hz, with shaft height from 160 up to 355 mm. Different forms of executions are possible, as well as other supply voltage;
• series asynchronous electric motors with squirrel-cage rotor for supply voltage 3 and 6 kV, in accordance to Bulgarian State Standards, IEC and GOST Standards, with degree of protection IP 23, from 2 to 8 poles, power from 200 to 1000 kW, height of rotation axle from 355 to 450 mm;
• series synchronous electric motors with squirrel-cage rotor for supply voltage 6 kV, 50 Hz, power from 315 to 2000 kW , with degree of protection IP 23;
• synchronous self-exciting generators for stabilized voltage 390/225 V, 50 Hz, corresponding to Bulgarian State Standard 10604-77 and international standards, power from 2.5 kVA to 250 kVA and speed of rotation 1500 min^-1. The generators are brushless, with built-in exciting system. On the basis of license bought from AEG Company, the series is completed with ship generators for stabilized voltage 230/400 V, 50 Hz, power 500, 700, 900 kVA and speed of rotation 1000 min^-1.
• single synchronous el. motors for driving of ball-mills, compressors, water pumps, etc. with power 9000 kW, voltage up to 10 kV and asynchronous el. motors designed for special conditions of operation and used for driving of water pumps in Nuclear Power Plants, blowers and belt conveyors in Heating Power Plants and mines etc., with power up to 3150 kW;
• hydro generators up to 235 MVA capacity. The biggest ones, produced by "ELPROM ZEM", are two motor-generators of 235 MVA capacity for 19 kV and rotation frequency 600 min^-1 as per documentation supplied by "TOSHIBA-JAPAN" and in cooperation with that company;

"ELPROM ZEM" provides for the clients in the country and abroad repair of its production in own production base - synchronous and asynchronous el. motors for high voltage in different execution and modification, special el. motors and hydro generators. Repair and replacement of stator and rotor windings, replacement or partial repair of the magnet line, replacement of bearings and bearing assemblies, as well as repair of other parts and units are carried out for this nomenclature of electric machines.

For preparing the windings for hydro generators and el. motors for high voltage, the company has up-to-date equipment, uses insulation materials supplied by well known European firms and applies modern methods of operation and control.

"ELPROM ZEM" has at its disposal well-trained and erudite managing, technological and production stuff with long experience. A great number of the leading specialists, as well as the top managers of the company have been trained in the factories of "TOSHIBA" - Japan.