About Us
Managed by technocrats with hands-on experience in transformer design, development, production, quality control and field servicing.
Company Profile
Infrastructure
Dedicated manufacturing plant at MIDC Rabale, Navi Mumbai, with in-house testing including lightning impulse tests to IS, IEC & ANSI.
Quality & TestingServices
Quality management, service call handling, inventory control and transparent project reporting from order to commissioning.
Get SupportURJA Techniques (India) Pvt. Ltd.
Manufacturers & Exporters of Engineered Transformers
URJA designs and builds oil-immersed and dry type transformers for utilities, EPC contractors and heavy industry. Every unit is engineered in-house to the buyer's specification — rating, voltage ratio, vector group, cooling and site conditions — rather than adapted from a catalogue.
Our product line covers converter duty, distribution, power, furnace, neutral earthing, hermetically sealed and reactor transformers, cast resin and VPI dry type transformers and unitized compact substations.
- Type tested up to 10 MVA, 33 kV for dynamic short-circuit withstand at CPRI & ERDA
- Lightning impulse testing performed in our own laboratory
- Designed, manufactured and tested as per IS, IEC & ANSI standards
- National Award 2008 for Outstanding Entrepreneurship
1996Plant Commissioned
10 MVAMax. Rating
33 kVVoltage Class
6+Export Markets
Our Product Range
Industrial & Electrical Transformers
Custom-built for utilities, refineries, steel plants, infrastructure and commercial buildings — each with full routine test reports.
Distribution Transformers
Final-stage step-down transformers that convert distribution line voltage to the utilisation level used by industrial estates, utilities and buildings.
- Oil-immersed
- Step-down
- IS / IEC
Power Transformers
Inner and outer LV winding sections built from pancake coils with the HV winding between them, for robust short-circuit performance.
- Up to 10 MVA
- 33 kV class
- CPRI / ERDA tested
Earthing Transformers
Zig-zag (interstar) winding creates a neutral point with the required zero-sequence impedance for earth-fault protection in 3-phase systems.
- Zig-zag winding
- Earth-fault protection
Hermetically Sealed Transformer
No conservator — the insulating oil is fully sealed from the atmosphere, reducing oxidation, moisture ingress and routine maintenance.
- No conservator
- Low maintenance
Reactor Transformer
Variable transformer-reactor with two core elements on a common yoke and a primary winding split into independently fed phase sets.
- Variable regulation
- Common yoke core
Compact Substation
Designed, assembled, wired and operationally tested in our works — including power factor correction equipment — so site work is minimal.
- Factory tested
- PF correction
- Fast install
VPI Dry Type Transformer
Iron core with vacuum pressure impregnated HV and LV windings — an oil-free solution for clean indoor industrial installations.
- Oil-free
- Indoor duty
- VPI insulation
Cast Resin Dry Type Transformer
Primary and secondary windings fully encapsulated in epoxy resin to block moisture — for indoor and outdoor, fire-sensitive locations.
- Epoxy cast
- Moisture proof
- Indoor / outdoor
Special Duty Transformers
Engineered for rectifier loads, harmonics, high currents and frequent switching in metals, chemicals and process industries.
Buyer's Selection Guide
Which Transformer Fits Your Application?
A quick reference used by our design engineers when EPC contractors and plant buyers send their first enquiry.
| Application / Site Condition | Recommended Type | Why It Fits |
|---|---|---|
| Utility networks, industrial estates, commercial LV supply | Distribution Transformer | Final step-down to consumer voltage with proven, economical oil-immersed design. |
| Plant main intake, refineries, steel & power plants up to 10 MVA, 33 kV | Power Transformer | Short-circuit strength verified by type tests at CPRI & ERDA. |
| Rectifiers, DC drives, electrolysis, traction supplies | Converter Duty Transformer | Windings and cooling designed for harmonic-rich, non-sinusoidal loading. |
| Arc and induction furnaces, smelting | Furnace Transformer | Built for very high secondary current and frequent switching cycles. |
| Delta or ungrounded systems needing earth-fault detection | Neutral Earthing Transformer | Zig-zag winding provides an artificial neutral with low zero-sequence impedance. |
| Remote, humid or dusty sites with limited maintenance | Hermetically Sealed Transformer | Sealed tank keeps oil away from air and moisture; no breather to service. |
| Hospitals, high-rise buildings, data centres, tunnels | Cast Resin Dry Type | Oil-free, epoxy-encapsulated windings for fire-sensitive and humid indoor areas. |
| Clean indoor industrial substations | VPI Dry Type | Oil-free VPI insulation with simple installation close to the load. |
| Fast-track projects, temporary or space-limited sites | Unitized Compact Substation | Factory assembled, wired and tested; minimal civil and site work. |
| Voltage regulation, current limiting, motor starting | Reactor Transformer | Variable reactance from split, independently fed primary winding sets. |
Not sure which design suits your project? Share your single-line diagram and site data with our engineering team via the Contact Page
Why Global Buyers Choose URJA
Engineering You Can Verify
Independent test certificates, documented quality procedures and references from real installations.
01
Third-Party Type Tested
Dynamic short-circuit withstand tests up to 10 MVA, 33 kV at CPRI & ERDA — India's national testing authorities.
Awards & Recognition02
IS, IEC & ANSI Compliance
One engineering team, multiple standards — specifications aligned to your project, consultant or utility.
Quality Policy03
Custom Design & Delivery
In-house design for special ratios, vector groups and duties. An 8000 kVA, 33/6.6 kV unit was delivered in 80 days.
Client References
Factory Tour
Inside Our Transformer Factory
See core building, winding, assembly and testing of power transformers at our Navi Mumbai plant.
Client Testimonials
What Our Clients Say About Us
Feedback from refineries, steel producers, EPC firms and international project owners who operate URJA transformers.
01 / 05
Buyer FAQ
Transformer Sourcing Questions, Answered
Practical answers for procurement managers and consultants evaluating an Indian transformer supplier.
What is the maximum transformer rating URJA manufactures?
URJA designs and manufactures transformers up to 10 MVA in the 33 kV voltage class. Units in this range have been type tested for dynamic short-circuit withstand at CPRI and ERDA, with lightning impulse tests carried out in our own laboratory.
Which standards do URJA transformers comply with?
Transformers are designed, manufactured and tested as per IS, IEC and ANSI standards, so the same design approach can be specified for Indian, Middle Eastern, African and Asian projects.
Does URJA export transformers outside India?
Yes. We supply buyers in the UAE, Saudi Arabia, Kenya, Nigeria, South Africa and Tanzania, and have delivered cast resin dry type transformers for a project in Indonesia, including complete vendor documentation.
Cast resin or VPI dry type — how do I choose?
Cast resin transformers fully encapsulate the windings in epoxy, blocking moisture — ideal for humid, fire-sensitive or outdoor locations. VPI transformers use vacuum pressure impregnated windings and suit clean indoor industrial environments.
When should I specify a hermetically sealed transformer?
Choose a hermetically sealed design where maintenance access is limited or the atmosphere is humid or dusty. With no conservator, the oil never contacts air, which slows oxidation and moisture absorption.
Trusted by Industry Leaders
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Get In Touch
Talk to a Transformer Engineer
- Head OfficeB-17, Shriram Industrial Estate, G. D. Ambekar Road, Wadala, Mumbai 400031, Maharashtra, India
- Phone+91 22 4923 2233 | +91 98200 81474
- Email[email protected]
- Working HoursMon – Sat: 09:00 – 18:00 IST | Sunday: Closed