ELSITRON LTD

Address: 79 Totleben Blvd, Sofia, Bulgaria
Mobile: +359 888 970208
Email: elsitron.ltd@abv.bg

Elsitron Ltd was established in 1992. In 1996 Elsitron is re-registered.
Elsitron Ltd is an assignee of the "Automation of Electric Drives" direction of the former Institute of Automation Technologies - TSNIKA - Sofia, Bulgaria.

ACTIVITY:

DESIGN, MANUFACTURING AND DEVELOPMENT OF DEVICES AND CONTROL SYSTEMS IN THE FIELD OF POWER ELECTRONICS AND ELECTRIC MOTION:

• Control systems for reverse and non-reversing thyristor converters for DC motor control. Capacities from 2 to 4000kW; Voltages up to 220, 440 or 850V / DC;
• Thyristor exciter control systems for synchronous motors with excitation currents up to 1600A and voltages up to 440V;
• Thyristor exciter control systems for regulation and voltage stabilization of synchronous generators with excitation currents up to 4000A and voltages up to 850V (for boost);
• Main drive control systems for vehicles with limited perimeter motion, powered by 380V AC power and 80V DC series motors - "Cable Car";
• Automatic reactive power compensation systems for 6kV and 10kV networks using controlled reactors;
• Stations for cathodic protection against electro-corrosion of underground metal structures.
• Electric arc furnace management systems.
• Design of PCBs, front panels, lettering, etc.;
• Consultations, technical assistance, repair and maintenance.

DELIVERY, STARTING AND SERVICE OF:

• UPS - systems
• Industrial rectifiers and batteries
• Diesel generators

DELIVERY, OPERATION AND SERVICE OF DIGITAL THYSTOR CONVERTERS FOR REPLACEMENT OF MORAL AND PHYSICAL OLDER ANALOGS.

CATODE PROTECTION AGAINST ELECTRIC CORROSION

CATHODE PROTECTION STATIONS TYPE "STELSY" are intended for power supply and control of electrochemical corrosion protection of underground metal structures, pipelines, etc.

SPECIFICATIONS

• Start-stop operation;
• Smooth start of upright current and voltage at switching tst = 4s;
• Control operations
  • automatic mode - regulation and stabilization of the polarization current Id;
  • manual mode - pulse-phase control of thyristors;
• Current limitation;
• Current protection;
• Integrated phase control;
• Protection against atmospheric surges at inlet and outlet;
• Digital display for output current Id, voltage Ud and potential pipe - ground Us;
• Data logger plug and output current and voltage and tube-to-ground connections.
• Overall dimensions in mm 500x600x200; 600х800х250

WORKING CONDITIONS

• Ambient Temperature: -25°С до +55°С;
• Relative humidity: до 90% /при температура 20°С/;
• Operating mode: continuous in climate zone N in a cabin, under shed or outdoors;
• Protection Degree: IP65.

ELECTRICAL SAFETY
Protection class I, acc. BDS 13548-76

WARRANTY 24 months.

PHOTOVOLTAIC POWER SUPPLY CATODE PROTECTION STATION

"FOXI 110" is intended for providing protection against electro-corrosion of pipelines in the absence of mains voltage 230V AC;

SPECIFICATIONS

• Supply voltage – 24 V DC;
• Output Power – 110 W;
• Output voltage - adjustable from 0 to 24 V;
• Output current - 0 to 5.5 A;
• Control operations
  
  • automatic mode - stabilization of the output current;
  • manual mode - smooth setting of the output current;
• Short circuit protection;
• Input and output overvoltage protection;

Digital display for output current Id, voltage Ud and potential pipe - ground Us;

Data logger plug and output current and voltage and tube-to-ground connections;

Overall dimensions 400x400x200 mm;

WORKING CONDITIONS

• Ambient temperature: -20°С до +50°С;
• Relative humidity: up to 90% (at 20°С);
• РOperating mode: continuous in climate zone N in a cabin, under shed or outdoors;
• Protection Degree: IP65.

ELECTRICAL SAFETY
Protection class I, acc. BDS 13548-76

WARRANTY 18 months.

ELSITRON may provide:

• copper sulphate elements - delivery from CORRPOL - Poland;
• additional sensors;
• ferro-silicon anodes;
• warranty and post-warranty service for our products;

SIGNIFICANT DEVELOPMENTS:

• STOMANA INDUSTRY - Pernik - Systems for controlling the electric drive of the auxiliary mechanisms of the Stan 500 (rollers, ambulances, pressure equipment, etc.)
• STOMANA INDUSTRY - Pernik - Systems for control of the main electric drives of Stan 2300 and Cell 650 (excitation of GD groups)
• STOMANA INDUSTRY - Pernik - Thyristor exciter control system for synchronous motor Box 650, Condition 500
• STOMANA INDUSTRY - Pernik – Thyristor converter 850V, 4000A (Cell DUO and the fallen Condition 250)

• Kremikovtsi - Ferroalloy Plant - Control systems for the main drive of a cable car, powered by a voltage of 380 V AC


• Paper Factory JSC - Stamboliyski – Thyristor excitation system for voltage regulation and stabilization of Turbogenerator №3


• BULGARTRANSGAZ EAD - Stations for cathodic protection against electro-corrosion of underground metal structures


• Assenitsa Hydroelectric Power Plant and Levski Hydroelectric Power Plant at the NEC Branch Hydroelectric Power Station Rhodope Group - Plovdiv - Thyristor excitation system for regulation and voltage stabilization of hydrogenerators


• TECHNOCOREKT - Burgas - Devices for power supply and control of excitation current of electrovibration feeders


• MADARA LC AD - Shumen - Arc control systems for electric steel furnaces


• METACOM JSC - Pleven - Arc Management Systems for Electro-Steel Furnaces


• VIDAHIM AD - Vidin - Control system for electric drive of calender line


• "ANGEL STOILOV - 96" AD - Plovdiv – Digital converters for modernization of electric drive of shredding and correct machines


• Paper Factory - Kochani, Northern Macedonia – 1200 A, 440 V digital converter for modernization of electric drive of paper machine