Induction Furnace Transformers — engineered for steel mills & heavy cyclic shocks.
Steel re-rolling mills and induction melting plants operate under the most violent electrical conditions in Pakistan. TransfoLine builds and rewinds heavy-duty Induction Furnace Transformers (500 kVA to 10 MVA) engineered to withstand recurring scrap cave-in short circuits and extreme high-current thermal surges.
Engineered for absolute industrial reliability.
TransfoLine brings 18+ years of field engineering and 500+ completed substations across Pakistan.
Comprehensive technical execution scope.
Induction Melting Transformers (1–10 MVA)
Custom secondary low-voltage, high-current transformers feeding medium-frequency induction crucible melting furnaces.
Arc Furnace Step-Down Transformers
Engineered for steel scrap melting with specialized tap changers to handle extreme voltage swings during arc strikes.
OFWF Heat Exchanger Cooling Systems
Pumping transformer oil through stainless-steel heat exchangers cooled by plant cooling tower water for maximum heat removal.
Heavy Workshop Rewinding & VPI
Full rewinding of burnt furnace coils with Class H insulation and Vacuum Pressure Impregnation (VPI) varnish baking.
From concept to energized power.
A systematic 4-step engineering roadmap delivering transparent timelines and guaranteed performance.
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01
Furnace Load Audit
Surge Profile Analysis
Analyzing crucible melting tonnages, inverter frequency, and short-circuit surge levels to size reinforced coils.
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02
Heavy-Duty Fabrication
Reinforced Coil Winding
Winding heavy-gauge copper strip with radial duct spacers and multi-point axial tie-rod clamping structures.
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03
Testing & VPI Baking
Vacuum Impregnation
Baking core and coils in high-temperature vacuum ovens and impregnating with high-grade Class H insulating varnish.
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04
On-Site Commissioning
Full Melt Test
Connecting water-cooled busbars, verifying oil circulation flow, and monitoring temperature curves during initial scrap melt.
Frequently asked questions.
Common questions about this service. Call our engineering team for anything else.
BURNOUT CAUSES Why do standard distribution transformers burn out in steel melting plants?
Induction furnaces subject transformers to continuous high-order harmonics, extreme cyclic thermal loads, and repeated high-current short-circuits during scrap cave-ins. Standard transformers lack the reinforced mechanical clamping and cooling required to withstand these electro-dynamic forces.
COOLING What cooling method is best for heavy furnace transformers?
For transformers rated 2.5 MVA and above, Oil Forced Water Forced (OFWF) or Oil Forced Air Forced (OFAF) cooling systems are used to rapidly dissipate thermal heat and maintain oil temperatures below critical oxidation limits.
REWINDING Does TransfoLine rewind and repair damaged furnace transformers?
Yes. We operate heavy workshop lifting cranes, hydraulic winding machines, and Vacuum Pressure Impregnation (VPI) baking ovens to rewind furnace transformers using 99.99% pure electrolytic copper with full performance warranties.
Furnace Engineering Knowledge Hub
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