Stepping high voltage down to usable power
Engineered for medium and large-scale industrial, commercial, and utility applications, the transformer steps medium-voltage electricity down to a safe, stable low voltage — using electromagnetic induction between three-phase primary and secondary windings, with no moving parts.
The primary (HV) winding has many turns of fine wire; the secondary (LV) winding has fewer turns of thicker wire. Electrical energy crosses between them magnetically through the CRGO core — the ratio of turns sets the ratio of voltages, with the two circuits fully isolated from each other.
What goes into every unit
Each transformer is engineered for low losses, high short-circuit strength, and long, low-maintenance operation under demanding industrial and utility conditions.
Premium CRGO Core
Cold Rolled Grain Oriented silicon steel keeps core and copper losses low while improving magnetic performance.
Copper or Aluminium Winding
Choose electrolytic-grade copper or high-conductivity aluminium windings, both built for long service life.
Heavy-Duty Welded Tank
Corrosion-resistant, welded steel tank built for high short-circuit strength and continuous operation.
ONAN Cooling with ONAF Option
Standard Oil Natural Air Natural cooling, with Oil Natural Air Forced available for higher thermal loads.
Excellent Voltage Regulation
Holds a consistent output voltage through load fluctuations, protecting connected equipment.
Low Maintenance Design
Built for long operational life with minimal upkeep, routine tested per IS 2026 before dispatch.
Technical specifications
Standard configuration below — voltage ratio, tap changer, vector group, and winding material can be customized to your project.
Applications
Sized for medium and large-scale industrial, commercial, and utility loads where a stable, high-capacity supply matters most.
Manufacturing process
Every unit moves through the same monitored sequence, start to finish.
Engineering & Design
Specifications finalized against project requirements.
CRGO Core Cutting & Assembly
CRGO steel cut and assembled to spec.
Coil Winding & Insulation
Primary and secondary windings formed and insulated.
Tank Fabrication & Core-Coil Assembly
Heavy-duty welded steel tank built and core-coil assembly fitted.
Vacuum Drying & Oil Filling
Assembly dried under vacuum, then filled with insulating oil.
Routine Testing & Quality Inspection
Full IS 2026 test sequence and final quality inspection.
Packing & Safe Dispatch
Secure packaging and dispatch with test documentation.
Every unit is tested before it leaves the factory
Only transformers that pass every inspection are cleared for dispatch, with complete routine test reports supplied alongside each unit.