DiFOC System

Power Supply Unit

Electrotherm medium frequency power supplies with power ratings from 5 KW to 40,000 KW and frequency range of 100 Hz to 10,000 Hz have been workhorses across the foundries and steel melting plants for their robust design, state of the art technology, efficiency, and excellent reliability.
These power supplies adopt a compact design and yet are spacious enough to facilitate easier maintenance. The inverter SCRs are well protected by break-over diodes. The current fed inverter design results in higher inverter efficiency compared to other designs. Less number of power components and component types makes the system very simple. The fast electronic tripping devices protect the system in the event of short circuits. The efficient DC Reactor ensures the safety of power components.
Latest State-of-the-art Digital Inverter technology through Fibre Optic Communication (DiFOC) systems in power supply units up to 40,000 KW.
  • More than 150 efficient customers across the world have already adopted this latest technological innovation for their steelmaking plants.
  • Most of the reputed steel makers globally have extended a warm welcome to DiFOC® not only for new plants but even for replacing their existing furnaces of other make with DiFOC® based DTi® model.
  • Make your melt shop GO DiFOC® WAY.
  • Benchmark the efficiency, better than ever with.


We convey our sincere thanks and our appreciation to M/ s Electrotherm family for the development, realization, testing, qualification and commissioning of 10 MW power supply system for our Plasma Wind Tunnel facility. We are extremely glad that M/ s Electrotherm has taken up this challenging task, when no such system was existing in the country. We wish, we should have many more such collaborative ventures in future with M/ s Electrotherm and contribute to ISRO's futuristic advanced R&D programmes.
Mr. P.A. Krishnamoorthy, VSSC-ISRO
Hereby we feel glad to have 4000 KW/ 10 Ton DTi Furnace set along with HSMC lX Caster. We have commissioned this equipments in our plant on 21st May 2018 & found performance which was committed by Electrotherm was achieved. Electrotherm's project execution was extraordinary & their process understanding & support was remarkable. Looking to the performance of other equipments of other makes running within our group, we have found performance of Electrotherm make DTi Furnace to be best.

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