Direct factory-engineered distribution, isolation, dry-type, and power transformers compliant with IEC 60076, EN 50588-1 EcoDesign directives, and European industrial grid codes.
High-capacity oil-immersed step-down power transformer with copper foil windings, designed for main substation supply in heavy manufacturing plants.
Class F/H epoxy resin cast dry-type transformer (1250kVA–4500kVA) engineered for indoor substations, offering zero fire hazard and low noise.
Heavy-duty 50kVA–630kVA 380V/415V/480V epoxy cast isolation transformer designed to filter industrial harmonics and stabilize furnace control systems.
EU EcoDesign Tier 2 compliant SCB series step-down transformer featuring optimized CRGO core cutting for ultra-low no-load losses.
Compact cast resin dry-type power transformer specialized for industrial plant power distribution rooms, automated control bays, and data hubs.
Precision-engineered 20kV European grid standard distribution unit featuring flame-retardant self-extinguishing epoxy resin structure.
Reinforced 3-phase low voltage isolation transformer optimized for sensitive electronic controls in steel rolling mills and medical labs.
Multi-tap auxiliary AC isolation transformer engineered for high energy efficiency, continuous operational duty, and low total cost of ownership.
Under the national France 2030 industrial decarbonization roadmap, major French steelworks in industrial basins like Dunkirk, Fos-sur-Mer, and Lorraine are replacing traditional coal-fired blast furnaces with Electric Arc Furnaces (EAF) paired with Direct Reduced Iron (DRI) modules. Furnace transformers must endure extreme electrical, mechanical, and thermal stresses generated by rapid scrap melting cycles and frequent arc reignitions.
Connecting high-power metallurgical loads directly to the French transmission grid (RTE network) demands strict adherence to voltage flicker limits, power factor compensation, and low total harmonic distortion (THD). Our furnace and power substation transformers integrate specialized multi-tap ON-Load Tap Changers (OLTC) and heavy magnetic shielding to preserve grid stability during full power arc strikes.
All industrial step-down and auxiliary distribution transformers deployed in France must comply strictly with EN 50588-1 and EU Commission Regulation 2019/1783 (Tier 2). By utilizing high-grade Cold Rolled Grain Oriented (CRGO) steel cores and continuous copper foil windings, our manufacturing process reduces no-load core losses by up to 28% compared to standard industrial units.
Furnace transformers are fundamentally different from standard grid transformers. They must continuously handle heavy secondary currents (often tens of thousands of amperes), frequent operational short-circuits during scrap cave-ins, and steep voltage regulating requirements.
Traditional round wire windings experience uneven axial stress distributions during short-circuit faults. Our factory utilizes heavy-gage continuous copper foil winding technology. Foil turns eliminate transposition joints, spread electro-dynamic short-circuit forces uniformly across the axial length of the coil, and practically eliminate hot-spot thermal gradients, ensuring operational longevity in tough steel mill environments.
To accommodate the wide impedance variations throughout the melting, refining, and slag-forming phases of an Electric Arc Furnace, our furnace transformers feature motorized vacuum-switch OLTCs. Equipped with wide voltage regulating ranges (e.g., 80V to 1100V secondary outputs across 30 to 100 tap positions), engineers can precisely adjust arc power without interrupting furnace operation.
Given the harsh ambient conditions inside steel plants, our units offer multiple forced cooling options including ONAN (Oil Natural Air Natural), ONAF (Oil Natural Air Forced), OFAF (Oil Forced Air Forced), and OFWF (Oil Forced Water Forced). Water-cooled heat exchangers maximize heat extraction within compact plant footprints while keeping transformer winding temperature rise well below strict IEC 60076 limits.
High-current furnace step-down units engineered to withstand severe arc instability, cyclic current surges, and harmonic vibration in high-tonnage scrap recycling mills in Dunkirk and Fos-sur-Mer.
Secondary refining transformers providing fine voltage adjustment and continuous high power density during molten steel temperature maintenance and vacuum degassing metallurgy processes.
Specialized low-voltage high-current transformers designed for non-ferrous smelting, silicon metal production, and ferroalloy extraction facilities located in regional French industrial parks.
High-efficiency power step-down transformers supplying high-voltage power to large megawatt-scale electrolyzer plants integrated directly with zero-emission steel manufacturing infrastructure.
Compare operational parameters to select the appropriate transformer rating and structural insulation tier for your facility.
| Parameter / Feature | EAF / SAF Steel Furnace Transformer | Substation Step-Down Power Transformer | Cast Resin Dry-Type Distribution Unit |
|---|---|---|---|
| Power Capacity Range | 5 MVA to 120+ MVA | 10 MVA to 30+ MVA | 50 kVA to 4,500 kVA |
| Primary Voltage Class | 11 kV / 22 kV / 33 kV / 66 kV | 33 kV / 69 kV / 110 kV | 10 kV / 11 kV / 13.2 kV / 20 kV |
| Secondary Current Rating | Extremely High (Up to 80,000 Amps) | Standard Utility Level | Standard Distribution Level |
| Voltage Control (Tap Changer) | Motorized OLTC with 30–100 Steps | OLTC or Off-Circuit Tap Changer | Off-Circuit Tap Changer (±2.5%, ±5%) |
| Winding Construction | Continuous Heavy Copper Foil / Disk Winding | Layered / Disk Copper Winding | Vacuum Encapsulated Epoxy Resin Foil |
| Cooling System Options | OFAF, OFWF (Water Cooled), ONAF | ONAN / ONAF | Air Natural (AN) / Air Forced (AF) |
| Harmonic Mitigation (K-Factor) | High K-Factor (K13 to K20 Rated) | Standard Grid Rating | K4 / K9 Rating Available |
| Primary EU / EN Standard Compliance | IEC 60076-6, EN 60076 series | IEC 60076-1, EN 50588-1 | IEC 60076-11, EN 50588-1 (EcoDesign Tier 2) |
From laser CRGO core cutting and precision coil winding to tank fabrication, shot blasting, painting, and high-vacuum oil filling—every single step occurs inside our ISO-certified 103,500+ sq. ft. plant in Rajkot, India.
Every transformer undergoes mandatory 100% routine tests: winding resistance, voltage ratio, phase displacement, impedance voltage, short-circuit withstand checks, and separate-source AC dielectric testing before release.
Full export engineering support: seaworthy wooden crate packaging, nitrogen-filled transport options for large power transformers, complete custom documentation, and direct shipping routes to Le Havre and Marseille-Fos ports.
Yes. All transformers manufactured for export to France and the EU strictly adhere to standard international specifications including IEC 60076, EN 60076 series, and EU Commission Regulation 2019/1783 (EcoDesign Tier 2 / EN 50588-1). We provide CE certificates of conformity, factory test reports, and guaranteed technical particulars (GTP) alongside every dispatch dossier.
Electric Arc Furnaces create high levels of 3rd, 5th, 7th, and 11th order harmonic currents. We design our furnace transformers with high K-factor ratings (K-13 up to K-20), reinforced inter-turn insulation, electrostatic shielding between primary and secondary windings, and stray-flux shielding inside the tank walls to prevent localized stray heating.
Foil winding uses continuous sheet copper or aluminum instead of individual wire strands. This structure eliminates mechanical axial forces generated during internal short circuits, improves cooling efficiency by eliminating hot-spot temperature zones, and dramatically increases the operational lifespan of transformers subjected to heavy cyclic industrial loads.
Absolutely. We welcome witness testing and third-party inspection (TPI) agencies—such as Bureau Veritas, SGS, DNV, or TUV—at our factory test bay in Rajkot prior to packing. Detailed test protocols are supplied in advance for drawing approval.
Standard cast resin dry-type and distribution transformers are typically completed in 3 to 5 weeks following GA drawing approval. Customized high-capacity power transformers and heavy-duty furnace transformers require 6 to 10 weeks depending on specific OLTC requirements, vector group complexity, and cooling accessory selection.
Units are packed in seaworthy, IP-rated moisture-resistant wooden cases with desiccant protection. Larger power transformers are shipped filled with high-purity dry nitrogen gas monitored by continuous pressure gauges. Bushings, conservator tanks, and radiators are individually packed and tagged for clear site assembly in France.
Contact our senior transformer application engineering team today. Share your single-line diagram (SLD), voltage class, load requirements, or tender specifications for a fast engineering proposal and direct factory quote.
