Industrial current rectifier

Rectifiers for electrolysis, electrotechnology and electrothermics Main specific features Functions of rectifiers: •power supply of electrolysis units for electrowinning of non-ferrous metals from melts (aluminum, magnesium) and solutions (zinc, copper, nickel, sodium, cadmium, lead, manganese, water etc.); •power supply of electrolysis units for gas production (chlorine, fluorine); •power supply of electro-graphitization furnaces; •similar loads with necessity of high operating currents. Main components of rectifier unit: •transformer part; •converter part; •heat exchanger; •DC disconnectors; •current meters; •auxiliaries auto-reclose cabinet; •remote control panel for one or several rectifiers. Rectifier circuit: •bridge (B); •«Y — reverse Y with paralleling reactor» (N). Control of output current under load — OLTC, thyristor control angle high power characteristics high measuring accuracy of heavy current high installation and commissioning readiness Centralized control and diagnostics Benefits: •high power characteristics (efficiency, cos φ) in combination with the possibility of smooth-step current control; •high accuracy of heavy currents measurement up to 0,1%; •centralized control and diagnostics using modern microprocessor systems and industrial computers, automatic generation of reporting documents and protocols; •process control optimization; •high installation and commissioning readiness; •minimal impact on supply network when running several rectifiers due to the use of multi-pulse rectifying circuits and phase-rotation devices and compensation winding built into power transformer.