20t smelting electric furnace
rated capacity:13000kVA,3000KVar
rated power:2×6000kW,8000~12000KW
Induction Melting Furnace,Medium Frequency Power Supply,Power Transformer
1.GENERAL
The melting induction furnace comes from electromagnetic induction theory, it changes electrical energy to magnetic energy, which induces current flowing in metal material. The metal then is heated up to melting point by the inductive current. Usually small volume induction furnaces adopt aluminum alloy frame, and the great volume furnaces all use steel frame combined with silicon-steel to shield the flux leakage. Users can choose suitable furnace type according to the requirements of manufacture and scale of investment, so as to obtain the optimum benefit.
The essential equipments of induction furnace include power transformer, medium frequency power supply, compensative capacitors,reactor, furnace body, hydraulic station, and cooling water system. Of course, the connection cable and conductive copper bar is necessary.
2、 Rectifier transformer
2.1 Function and structure
This equipment includes main body of transformer, force oil water cooler, oil-expansion vessel and all accessories of transformer. It is cooled by oil-water cooler,so cooling water should be city water +softener
The transformer has such protection function as double float buchholz relay, pressure relief device. The transformer also has oil temperature testing device to give alarm and protection.