DC Arc Furnaces heating SCR rectifier Manufacturer UL CE CSA

Various DC furnace where DC power supply is needed, including all kinds of vacuum resistance furnace, vacuum arc furnace, plasma furnace etc. for melting of Titanium, Zirconium, Niobium and Vanadium, Tungsten, Molybdenum, metals difficult to dissolve, high temperature alloy and alloy steels. 

Electro slag refining

Recommended rectifier: High power SCR Rectifier                                             

                                      Small power IGBT Rectifier

Why Use Thyristor Rectifier Technology?

Compare to Diode rectifier, Thyristor rectifier has the following advantages:

u Realize accurate output regulation by SCR triggering control, not only by tap changer which is not accurate.

u Fine and accurate output voltage or current regulation as desire

u Intelligent digital controller

u Self adaptive to input grid fluctuation

 Technical Parameters

Ø Rectifier installation: in container with air conditioner

Ø  Rated Output current: 25kA

Ø Output current range: 0~25kA；

Ø Rated output voltage:140V(support 70V, 102V, 140V output using tap changer)

Ø  Whole system efficiency:≥95% at rated load;

Ø Constant current accuracy: ≤±1%;

Ø Constant voltage accuracy: ≤±1%;

Ø Power factor:≥0.92;

Ø Harmonics THDi:≤5% with LC filter;

Ø Rectifier circuit: two double star circuit in parallel

Ø Rectifier output pulse no.:12;

Ø Rectifier cooling method:WF, water cooling;

Ø Protection grade: IP54

Ø Control mode: constant current/voltage control

Ø Structure feature: front door and side door could be open for maintenance;

Ø Paint finish: RA7035

Ø Controller local function: use HMI touch panel, have following functions:

Output DC current display

Output DC voltage display

Output DC power display

RESET push button, black color(if required)

Remote indication lamp, green color

Unit on indicator lamp, green color

Fault indicator lamp, amber or red color

Fault reason display

Output value setting

Constant current/voltage/power mode selection

Local/remote control selection

History data record

Water pressure display

Protection setting