Electrical Transformer

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High-Performance Industrial Electrical Transformers

Urja Techniques (India) Pvt. Ltd. is a premier manufacturer and exporter of heavy-duty industrial electrical transformers. Designed for optimum power transformation across utility distribution grids, solar energy plants, mining facilities, and industrial complexes, our transformers maintain maximum dielectric efficiency under high thermal and electrical strain.

Dielectric & Thermal Endurance

Engineered with high-grade electrolytic copper conductors and low-loss CRGO silicon steel cores, ensuring 99.9% operational efficiency and minimal load loss.

Standardized Quality Compliance

Manufactured in accordance with IEC 60076, IS 2026, IS 1180, and ANSI standards. Thoroughly type-tested by accredited laboratories like CPRI and ERDA.

Robust Construction

Hermetically sealed or reinforced steel tanks provided with superior anti-corrosive protective coatings designed for demanding outdoor and indoor marine/sub-zero climates.

Standard Technical Specifications

Power Rating (Capacity) Up to 20 MVA (Distribution & Special Duty) / Up to 315 MVA (High Power)
Voltage Class Primary: 11kV, 22kV, 33kV up to 400kV | Secondary: 0.415kV, 3.3kV, 11kV, 33kV
Winding Material Electrolytic High-Grade Copper Core (Strip / Foil Winding)
Cooling Methods ONAN (Oil Natural Air Natural), ONAF (Oil Natural Air Forced), Air Cooled (AN/ANAF)
Core Material Prime Cold Rolled Grain Oriented (CRGO) Silicon Steel
Tap Changer Options Off-Circuit Tap Changer (OCTC) / On-Load Tap Changer (OLTC) with AVR
Insulation & Frequency Class A, F, or H Insulation | Operating Frequency: 50 Hz / 60 Hz
Compliance Standards IEC 60076, IS 2026, IS 1180 Part 1, IS 11171, IEEE / ANSI

Our Electrical Transformer Range

Custom-designed transformers suitable for power generation, sub-transmission, commercial buildings, renewable energy plants, and heavy industrial drives.

Distribution Transformer by Urja Techniques

Distribution Transformer

  • Power Rating: Up to 20 MVA
  • Rated Voltage: Up to 33,000 V (33kV)
  • Cooling: ONAN (Oil Natural Air Natural)
  • Phase / Frequency: 3-Phase | 50/60 Hz
  • Efficiency: 99.9% High Efficiency

Designed for municipal power utility systems, manufacturing plants, and commercial facilities to provide stable stepping-down of grid voltage.

Converter Duty Transformer

Converter Duty Transformer

  • Power Rating: Up to 20 MVA
  • Voltage Class: Up to 33 kV
  • Type: Multi-Winding Oil Immersed
  • Cooling: ONAN / ONAF
  • Feature: Harmonic Withstand Capability

Built with enhanced mechanical strength and thermal protection to withstand heavy harmonic loads associated with VFDs and rectifier systems.

Vacuum Pressure Impregnated VPI Transformer

VPI Dry Type Transformer

  • Power Scope: Up to 3.5 MVA
  • Cooling: Air Cooled (AN/ANAF)
  • Insulation Class: Class H / Class C
  • Environment: Fire-Safe & Non-Polluting
  • Core: High-Grade Electrolytic Copper

Vacuum Pressure Impregnated dry type units engineered for fire-sensitive indoor installations such as metro stations, hospitals, data centers, and high-rise towers.

Industrial Electric Power Transformer

Industrial Electric Power Transformer

  • High Voltage: Up to 132,000 V (132kV)
  • Low Voltage: 3300 V / 11000 V
  • Cooling: ONAN / OFAF
  • Winding Material: High Conductivity Copper
  • Applications: Transmission Substation & Heavy Industry

Robust electrical power transformers capable of stepping up or stepping down high grid voltages for transmission corridors and heavy utility networks.

High Power Transformers

High Power Transformer

  • Power Capacity: Up to 315 MVA
  • Max Voltage: Up to 400 kV
  • Tap Changer: Automatic OLTC Included
  • Testing Standard: IS 2026 / IEC 60076
  • Operating Temp: -25°C to +50°C

Extra-high voltage power transformers for regional electrical grids, hydro/thermal power stations, and major power distribution hubs.

Hermetically Sealed Oil Filled Transformer

Hermetically Sealed Oil Transformer

  • Power Scope: Up to 2500 kVA
  • Voltage Rating: 11kV / 22kV / 33kV
  • Maintenance: Maintenance-Free (Zero Oxidation)
  • Tank Design: Corrugated Fin Tank
  • Standards: IS 1180 Part 1 / IEC 60076

Completely sealed oil-immersed transformers preventing air and moisture ingress, significantly extending dielectric liquid longevity in harsh environments.

Solar Application Transformer

Solar PV Application Transformer

  • Capacity: 100 kVA to 2500 kVA
  • Inverter Interface: Multi-Winding LV Configurations
  • Cooling: ONAN
  • Loss Optimization: Ultra-Low Load & No-Load Loss
  • Application: Utility-Scale Solar PV Farms

Specifically built to handle inverter output fluctuations, solar harmonics, and step up renewable solar energy for seamless grid integration.

Cast Resin CRT Dry Type Transformer

Cast Resin (CRT) Dry Type Transformer

  • Capacity: Up to 2500 kVA
  • Voltage Rating: 11kV / 22kV / 33kV
  • Coil Insulation: Epoxy Resin Encapsulated
  • Cooling: Air Natural (AN)
  • Safety: Flame-Retardant & Self-Extinguishing

Moisture-proof, non-flammable cast resin dry-type transformers designed for high-humidity, marine offshore, and cleanroom environments.

VPI Dry Transformer

VPI Dry Power Transformer

  • Power Scope: Up to 2500 kVA
  • Cooling: AN / ANAF
  • Standard: IS 11171 / IEC 60076
  • Impregnation: High-Vacuum Resin Process
  • Overload Capacity: High Short-Circuit Withstand

Features superior mechanical rigidity against short-circuit forces and high thermal endurance under continuous heavy industrial duty cycles.

Global Quality & Certified Testing Process

At Urja Techniques (India) Pvt. Ltd., quality engineering is fundamental to our transformer design. Every electrical transformer is manufactured in our ISO 9001:2015 and ISO 14001:2015 certified Mumbai facility using advanced automated winding machines, vacuum drying ovens, and precision oil impregnation plants.

All units undergo strict routine, type, and special testing verified by premier third-party power research authorities, including CPRI (Central Power Research Institute) and ERDA (Electrical Research and Development Association).

Dielectric Routine Tests Temperature Rise Test Short-Circuit Impulse Test Acoustic Noise Measurement Dissolved Gas Analysis (DGA)

Why Global Procurement Managers Trust Urja

  • 30+ Years Industry Experience: Engineering transformers since 1991.
  • Exporting to 40+ Countries: Active supplies across Middle East, Africa, Europe, and Southeast Asia.
  • Registered SEB Vendor: Approved manufacturer for State Electricity Boards & Fortune 500 EPCs.
  • In-House Testing Facility: BIS compliant temperature rise testing bay built into the manufacturing plant.

Need Technical Datasheets or Custom Quotations?

Our engineering team can assist you with custom voltage ratios, specialized tap changers, and specific IEC/ANSI compliance documents for your project RFP.

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