Power Transformer Manufacturer & Supplier in India

High-Capacity Units up to 10 MVA and 66 KV — Serving Power Generation, Transmission & Heavy Industry Across India

About Our Power Transformers

Tirupati Transformers Pvt. Ltd. is a leading Power Transformer manufacturer based in Greater Noida, Delhi NCR, supplying high-capacity, oil-immersed units up to 10 MVA with voltage levels up to 66 KV on both primary and secondary sides. Every unit is designed for 100% continuous duty cycle operation, offering long service life, low maintenance requirements, and high energy efficiency.

Our manufacturing processes comply fully with Bureau of Indian Standards IS 2026 and IEC 60076 — the internationally recognized standards governing the design, manufacture, and testing of large power transformer manufacturer India. Each unit is oil-immersed with a typical operational lifespan of 30 years, making it a long-term capital investment for your infrastructure.

For smaller capacity requirements, explore our Distribution Transformer range. For specialized industrial heating applications, see our Furnace Duty Transformer.

Key Features and Benefits

Designed for 100% Continuous Duty Cycle

Unlike distribution-class units, a Power Transformer manufacturer from Tirupati is rated for round-the-clock full-load operation. The compact, thermally optimized design minimizes core and copper losses — directly reducing your electricity costs and improving overall system efficiency.

OLTC and OCTC Tap Changer Options

We supply both Off-Circuit Tap Changers (OCTC) and On-Load Tap Changers (OLTC) with RTCC panel and Automatic Voltage Regulator (AVR) — giving operators precise voltage control without interrupting power supply. This is critical for substations and industrial facilities where voltage stability directly affects production quality.

Nitrogen Infused Fire Protection System (NIFPS)

As an optional feature, our units can be supplied with a Nitrogen Infused Fire Protection System (NIFPS) — significantly reducing fire risk in substations and indoor installations where safety regulations demand additional protection.

Low No-Load Losses and High Efficiency

Our engineering team uses Cold Rolled Grain Oriented (CRGO) silicon steel cores and high-conductivity copper windings to minimize both no-load and load losses — ensuring every unit operates at peak efficiency across its entire load range. According to the Central Electricity Authority (CEA), reducing transformer losses is a national priority under India’s energy efficiency mission.

Flexible Cooling Systems — ONAN and ONAF

Standard units use Oil Natural Air Natural (ONAN) cooling. For higher ratings or demanding ambient conditions, Oil Natural Air Forced (ONAF) cooling with forced-fan radiator banks is available — maintaining safe winding temperatures even under maximum continuous load.

Easy Installation and Negligible Maintenance

Every unit ships fully assembled on bi-directional rollers, with all fittings factory-mounted and tested. Once installed, routine maintenance requirements are minimal — reducing downtime and operational costs over the transformer’s 30-year service life.

Standard Fittings and Accessories

Every unit we supply includes a comprehensive set of factory-fitted accessories for safe, reliable operation:

• Oil Temperature Indicator (OTI)
• Winding Temperature Indicator (WTI)
• Magnetic Oil Level Gauge (MOG)
• Pressure Relief Device (PRD)
• Marshalling Box
• Forced Fan Cooling (for ONAF units)
• OLTC and RTCC Panel with AVR
• Bi-directional Rollers
• Radiator Valves
• Dehydrating Breather
• Current Transformer (CT)
• Additional Neutral Terminal

All fittings are tested at the factory before dispatch — ensuring zero snag list on site commissioning.

Applications — Where Our Power Transformers Are Used

Our high-capacity units serve a wide range of critical infrastructure and industrial sectors across India:

Power Generation and Transmission

Used as generator step-up transformers at thermal, hydro, and gas-based power stations — stepping up generated voltage for efficient long-distance transmission. The Ministry of Power, Government of India reports India’s installed generation capacity crossed 950 GW in 2024, driving strong ongoing demand for reliable step-up and step-down units across the national grid.

Grid Substations and Electrical Utilities

Power Transformer supplier India are the core equipment of 33 KV, 66 KV, and 132 KV grid substations operated by State Electricity Boards and private distribution companies — stepping down transmission voltage for onward distribution to industrial and commercial consumers.

Renewable Energy — Solar and Wind Projects

Large solar and wind farms require step-up transformers to connect inverter output to the HT grid. Our Solar Inverter Duty Transformer and high-capacity units both serve utility-scale renewable energy projects across Rajasthan, Gujarat, and Tamil Nadu.

Heavy Industry — Steel, Cement and Mining

Steel plants, cement factories, mining operations, and refineries use large step-down units to supply HT power to their internal distribution networks and heavy machinery — requiring robust, high-capacity equipment rated for continuous industrial duty.

Captive Power Projects and EPC Contractors

Industrial groups operating captive power plants, and EPC contractors executing large infrastructure projects, require reliable step-up or step-down units as part of their electrical balance of plant (BoP) — an area where Tirupati Transformers has extensive supply experience.

Frequently Asked Questions – Power Transformer

What is the maximum capacity available?

We manufacture units up to 10 MVA (10,000 KVA) with voltage levels up to 66 KV. Custom ratings beyond this range can be discussed with our engineering team based on your project requirements.

What is the difference between a Power Transformer and a Distribution Transformer?

A Power Transformer Price India operates at higher voltage levels (33 KV to 132 KV and above) and higher MVA ratings — used primarily in transmission networks and large substations. A distribution transformer steps down voltage to the consumer level (415V / 11 KV) for last-mile supply. See our Distribution Transformer page for details on that product range.

Do you supply both OLTC and OCTC options?

Yes. We supply units with both Off-Circuit Tap Changers (OCTC) and On-Load Tap Changers (OLTC) with RTCC panel and AVR — selected based on your voltage regulation requirements and operational preferences.

What cooling systems are available?

Standard units use ONAN (Oil Natural Air Natural) cooling. ONAF (Oil Natural Air Forced) cooling with forced-fan radiator banks is available for higher ratings or more demanding duty conditions — selected based on your KVA rating and site ambient temperature.

Which standards do your transformers comply with?

All units comply with IS 2026, IEC 60076, ANSI, IEEE, and BIS requirements — ensuring full regulatory compliance for grid connection, State Electricity Board approval, and CEA statutory requirements.

What is the typical delivery timeline?

Standard delivery is 10 to 16 weeks from order confirmation depending on MVA rating and customization. Contact our sales team with your specifications for an accurate schedule.

Which regions in India do you serve?

We supply across India with primary coverage in Delhi, Noida, Greater Noida, Ghaziabad, Meerut, Hapur, Moradabad, Faridabad, Sonepat, Gurgaon, Panipat, Karnal, Bhiwadi, Neemrana, and all major industrial belts.

Why Choose Tirupati Transformers

Direct Manufacturer — No Middlemen

As a direct manufacturer based in Greater Noida, Delhi NCR, we eliminate distributor markups — offering competitive pricing on every Oil Cooled Power Transformer without compromising on copper quality, core material, insulation, or testing standards.

IS, IEC, and BIS Certified Production

Our manufacturing facility and products are certified to IS 2026, IEC 60076, and BIS standards — meeting all statutory requirements for grid-connected and industrial installations across India.

10-Year Operational Lifespan

Every unit is designed for a 10-year service life with negligible maintenance — protecting your capital investment and delivering a strong total cost of ownership advantage over lesser-quality alternatives.

Pan-India Supply and After-Sales Support

We supply and commission equipment across India, with after-sales support for oil testing, preventive maintenance, and emergency repairs — keeping your critical infrastructure operational.

Get a Quote for Your Requirement

Whether you need a step-up unit for a power plant, a grid substation transformer, or a high-capacity industrial supply unit — our engineering team will recommend the right configuration and deliver on time. Request a Test Report Sample

• Measurement of winding resistance
• Measurement of voltage ratio and check of polarity and vector group
• Measurement of impedance voltages
• Measurement of load losses
• Measurement of no load losses and no load current
• Measurement of harmonics induced overvoltage withstand test
• Separate source voltage-withstand tests on HV and LV windings
• Bushing routine tests
• Oil Leakage Test
• Relief Device Test
• Dielectric Routine Tests
• Galvanizing Tests
• Magnetic Balance Tests
• Induced over voltage withstand Tests
• Tap changer Tests
• Oil Tests.

• Oil Temperature Indicator (OTI)
• Winding Temperature Indicator (WTI)
• Magnetic Oil-level Gauge (MOG)
• Pressure Relief Device (PRD)
• Marshalling Box
• Forced Fan Cooling
• OLTC & RTCC Panel with AVR
• Bi-directional Rollers
• Radiator Valves
• Dehydrating Breather
• Current Transformer
• Additional Neutral Terminal.