Stepping high voltage down to usable power
Designed for high-capacity power distribution in industrial plants, utility substations, and infrastructure projects, 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 superior efficiency, high mechanical and short-circuit strength, and long, minimal-maintenance operation under demanding industrial and utility conditions.
High-Efficiency CRGO Core
Cold Rolled Grain Oriented silicon steel keeps no-load and load losses low while improving magnetic performance.
Premium Copper or Aluminium Winding
Precision-engineered electrolytic-grade copper or high-conductivity aluminium windings, both built for long service life.
Heavy-Duty Fabricated Tank
Corrosion-resistant outdoor construction built for high mechanical and short-circuit strength.
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.
Long Service Life
Minimal-maintenance design, 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 high-capacity industrial, utility, and infrastructure loads where reliable, large-scale power distribution matters most.
Manufacturing process
Every unit moves through the same monitored sequence, start to finish.
Design & Engineering
Specifications finalized against project requirements.
CRGO Core Cutting & Assembly
CRGO steel cut and assembled to spec.
Precision Coil Winding
Primary and secondary windings precision-formed and insulated.
Tank Fabrication & Core-Coil Assembly
Heavy-duty fabricated 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.
Final Packing & 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.