DC Electric Arc Furnace Transformer Rectifier 30kA 80V

1. Introduction of DC Electric Arc Furnace Transformer Rectifier

The DC Electric Arc Furnace Transformer Rectifier are used for 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.

2. Why Choose Green Power?

u Rich experience in arc furnace application: More than 20 years design, production and service experience. Made worldwide highest power arc heating rectifier system.

u Strong technical ability: PhD technical team, more than 40 top level engineers, more than 20 years technology accumulation, first class technology, Fully self developed products, have Patent, Software copyright. .

u Reliable quality: Designed, manufactured, tested as per strict reliability standard and quality control process, ensure reliable running more than 20 years.

u Considerate service: Professional service before, during and after sales. Lifelong after service system. Customer management system

u High performance price ratio: With USA, Europe level quality, competitive price than USA and Europe. 

3. Scope of Supply

The power supply will be used to supply an electrode installed in a DC arc furnace with voltage and current value settable by the controller.

The system is composed of below parts:

u Three phase oil cooling transformer: include main transformer and voltage regulator with on-load tap changer for voltage regulation at primary.

u SCR rectifier: 12 pulses SCR rectifier, composed of two double star circuit in parallel connection. Each SCR is series connected with fast-acting fuse to protection SCRs.

u  Controller system: DSP based self developed micro controller, including SCR trigger, signal sampling and handling , data storage, PID operation, logic control and communication etc. 

u DC output current measurement unit, high current Hall sensor

u Output remote control by RS485 communication bus or input/output signals or other Remote control interface.

u Water chiller(optional): provide qualified water to cool the power supply.

u DC current stabilization choke(optional)

u High voltage switc cabinet(optional)

u Connecting bus between the transformer and rectifier

u Complete documentation in paper and electronic form

u Set of spare parts

4. Technical Data

Ø Input voltage: AC3 phases, 60Hz±1%,voltage meet customer requirement

Ø Rated Output current: 30kA DC

Ø Rated output voltage: 80V DC

Ø Power factor: up to 0.9 using on load tap changer

Ø Constant current accuracy: ≤±1%.

Ø Constant voltage accuracy: ≤±1%

Ø Transformer cooling method: ONAN


Ø power supply output pulse no.: 12 pulse

Ø power supply cooling method: water cooling

Ø Control mode: constant current/voltage control/constant power

Ø Load grade: type Ⅰ, full load long time running.

Ø Rectifier Protection degree: IP54

Ø Paint finish: RAL7035 or confirmed by the customer

Ø Cooling water requirement:

       w Water inlet temperature: 20℃～30℃, less than 35℃(measured in inlet water pipe at 10cm position from rectifier)

w Water outlet temperature: ≤40℃(measured in outlet water pipe at 10cm position from rectifier)

w Inlet water pressure:0.2～0.4MPa, outlet water pressure less than 0.05MPa；

w Purified water flow is 7.2T/h

w PH:6.5-9.5;

w Water quality: Resistivity≥5kΩc•m

Contact us: 

Email: amy@bjgreenpower.com

Tel: 00447520631108, 00861056250889

Mobile/whatsapp/wechat: 008618500983665

Skype: beijinggreenpower.amy