As a specialized furnace transformer manufacturer, we design and produce high-current furnace transformers for electric arc furnaces, induction furnaces, and other industrial heating applications. Our furnace transformers are built for the demanding conditions of furnace operation.
Arc Furnace Expertise
We have extensive experience in designing and manufacturing electric arc furnace transformers with ratings up to Our furnace transformer designs cover impedance values in the 4.5% to 21% band, secondary voltages in the low hundreds of volts with multi step on-load regulation, and cooling arrangements in AN, AF, OFAF and OFWF. Ratings are engineered against your melting cycle rather than selected from a catalogue. MVA and secondary currents up to amperes. Our arc furnace transformers feature special impedance characteristics, robust construction, and advanced cooling for reliable operation in steel mills.
Severe Duty Cycle Design
Furnace transformers operate under severe duty cycles with frequent load changes, short circuits, and high temperatures. Our designs are optimized for these conditions with robust mechanical construction, enhanced thermal performance, and special insulation systems to ensure long service life.
Advanced Cooling Systems
We offer advanced cooling systems for furnace transformers including water cooling, forced oil cooling, and combination systems. Our cooling designs are optimized using computational fluid dynamics to efficiently dissipate the high heat generated by furnace transformers.
On-Load Tap Changers
Our furnace transformers can be equipped with on-load tap changers for voltage regulation during furnace operation, allowing optimal power input for different melting and refining stages. We work with leading tap changer manufacturers to provide reliable, high-performance voltage regulation.
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Request a Custom Quote
Need a custom transformer for your application? Send us your technical requirements and our engineering team will provide a custom solution within 24-48 hours.
Frequently Asked Questions
What furnace duty do you design for?
Electric arc, ladle refining, induction and submerged arc furnace duty. Impedance values in the 4.5% to 21% band and multi step on load regulation cover most melting and refining cycles.
How do you size a furnace transformer?
From the melting cycle: charge weight, tap to tap time, power-on time and permissible overload. The rating follows the process, not the other way round.
Do you supply the series reactor as well?
Yes, either integral with the transformer or as a separate unit, depending on the layout and on whether existing equipment has to be reused.