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Power
Transformers

Engineered with precision and built for durability, our transformers ensure efficient, stable, and safe power distribution for industrial, commercial, and infrastructure applications.

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power transformer up to 12.5 MVA manufactured by Trinity Cleantech at Jadcherla facility Telangana India
12.5MVA
Max Rating
About This Product

High-Capacity Power for Grid & Industrial Applications

Trinity Cleantech's BIS Aligned distribution transformers step high-voltage grid supply down to safe, usable levels for homes, industries, and infrastructure - reliably and efficiently. Built with prime-grade CRGO cores and EC copper windings, each unit is manufactured, tested, and certified at our automated 20+ acre facility in Jadcherla, Telangana. Available from 2.5 MVA to 12.5 MVA, 33 kV class, with hermetic sealing and BEE-compliant green variants.

BIS Aligned Factory Tested BEE Compliant
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Ultra-Low Losses

Prime-grade CRGO silicon steel core minimises no-load and load losses for maximum efficiency

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EC Copper Winding

Electrolytic-grade copper ensures superior conductivity, heat dissipation and long winding life

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Zero-Maintenance Sealing

Hermetically sealed corrugated tank design eliminates moisture ingress - no oil topping, no breather maintenance

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BEE Green Compliant

Certified green transformers with biodegradable ester oil options for sustainable operation

2.5MVA
Minimum
Rating Available
12.5MVA
Maximum Power
Transformer Rating
33kV
Maximum
Voltage Class
25K+
Transformers Supplied
Across India
Technical Specifications

Detailed Product Parameters

power transformer technical specifications Trinity Cleantech India up to 12.5 MVA

Salient Features

  • Step Up and Step Down transformers with sturdy designs to withstand unpredictable system conditions
  • Electrolytic Grade (EC) copper winding for excellent conductivity and performance
  • Prime Grade CRGO core material for longer life and lower losses
  • BEE complied green transformers for minimal energy losses
  • Available in all vector groups and tapping arrangements - OCTC and OLTC
  • Hermetically sealed options with Mineral oil or Biodegradable ester oil
  • All cooling arrangements: Corrugated panels, Pressed Steel Radiator, ONAN/ONAF
ParameterSpecification
Ratings & Voltage Class
Three Phase, 2.5 MVA up to 12.5 MVA, 33 kV Class
Duty
Outdoor
Applicable Standards
IS: 2026, IEC: 60076, BS, SANS, IS1180:2014 etc.
Losses
As per relevant standard / Customer requirement
Impedance
As per relevant standards or customer requirement
Tapping
OCTC or OLTC
Vector Group
Dyn11, Dyn5, Yzn11, Ynd etc.
Frequency
50 Hz
Insulation Class
A, B
Cooling
ONAN / ONAF
Winding Material
Copper (Cu)
Insulating Fluid
Mineral Oil or Synthetic Ester Oil
Core Material
CRGO (Cold Rolled Grain Oriented) Silicon Steel
Tank Type
Pressed / Fabricated Steel with Fins or Radiators
Accessories & Fittings
As per customer requirement
Construction Details

What Goes Inside Every Transformer

Every component is selected, inspected, and assembled to exacting standards - delivering transformers that outlast and outperform industry benchmarks.

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CRGO Core

Prime-grade Cold Rolled Grain Oriented silicon steel laminations - cut and stacked with precision to minimise magnetic losses and reduce heat generation under load.

Hi-B / Domain Refined options available
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EC Copper Winding

Electrolytic-grade (EC) copper conductors wound in continuous disc / helical / layer configurations depending on voltage and rating - insulated with thermally upgraded paper or Nomex.

Aluminium winding option available
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Insulating Fluid

High-quality transformer mineral oil or biodegradable synthetic ester oil - providing both electrical insulation and heat transfer.

Ester oil for fire safety & eco compliance
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Tank & Cooling System

Pressed or fabricated steel tank with corrugated fins, pressed steel radiators, or tube-type cooling - designed for ONAN and ONAF operations with bolt-on or welded construction.

Hermetic / conservator tank variants
Where It's Used

Applications of Power Transformers

From grid substations to large industrial complexes - Trinity power transformers serve every sector that needs high-capacity, reliable bulk power transmission.

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Rural Electrification
Last-mile distribution to villages, farms, and rural communities across India's power grid
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Industrial Facilities
Factories, manufacturing plants, and process industries requiring stable HT to LT conversion
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Commercial Buildings
Offices, malls, IT parks, hotels and residential complexes needing reliable power infrastructure
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Renewable Energy
Solar farms, wind parks and hybrid energy installations requiring grid-connected step-up/down
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EV Charging Hubs
Power supply backbone for AC and DC EV charging stations and high-capacity depot chargers
How It Works

How a Power Transformer Transmits Bulk Power

A power transformer is the backbone of bulk power transmission - receiving very high voltages from the grid and stepping them up or down for efficient long-distance delivery to substations and industrial facilities.

01
High Voltage Arrives at Primary Winding

33 kV / 11 kV power enters the transformer's primary copper winding through the HT terminals — connected directly to the distribution feeder

02
Electromagnetic Induction Through CRGO Core

The alternating current creates a magnetic flux in the CRGO silicon steel core - the high-grade grain orientation minimises core losses at every cycle

03
Voltage Stepped Down at Secondary Winding

The magnetic flux induces voltage in the secondary winding at a lower ratio - delivering 433V / 230V at the LT terminals for safe end-use distribution

04
Oil Cools and Insulates Throughout

Mineral or ester oil circulates around the core and windings, absorbing heat and providing electrical insulation - transferred to the fins or radiators for dissipation

Voltage Transformation Flow
33kV
Transmission Grid Input

High-voltage power from sub-transmission network enters through HT terminals

↓
11kV
Primary Distribution Level

Intermediate voltage from 11 kV feeders - common for urban and semi-urban distribution

↓
433V
Three-Phase LT Output

Step-down output at 433V (3-phase) for industrial and commercial loads

↓
230V
Single-Phase Output

230V single-phase supply distributed to homes, shops, and small consumers

98%+
Typical efficiency of modern power transformers
30yr
Expected service life of Trinity power transformers
50Hz
Operating frequency for India's power grid standard
33kV
Maximum voltage class handled by our power range
Ready to Order?

Request a Custom Power Transformer Quote

Share your capacity, voltage class, vector group, cooling preference, and application - our engineers will configure the exact transformer you need.

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Frequently Asked Questions

Everything You Need
to Know

Common questions about Trinity Cleantech power transformers, ratings, and applications.

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Can't find what you're looking for?
marketing@trinitycleantech.com or call +91 80192 38877 - we respond within 1 business day.

Trinity Cleantech manufactures power transformers from 2.5 MVA up to 12.5 MVA, suitable for grid substation infrastructure, heavy industry, and utility applications. Both ONAN and ONAF cooling configurations are available, with OLTC (On-Load Tap Changer) as an option.

Power transformers operate at higher capacities (typically above 2.5 MVA) and are used in transmission and sub-transmission networks to step voltage up or down between grid levels. Distribution transformers (100 kVA to 2500 kVA) are the final step, delivering power at usable voltages (433V/230V) directly to end consumers. Power transformers typically run at or near full load continuously, requiring higher efficiency and robust insulation design.

Yes. Trinity Cleantech power transformers are BIS (Bureau of Indian Standards) Aligned and comply with IS:2026 and IEC:60076 standards. The company is ISO 9001:2015, ISO 14001:2015, and ISO 45001 certified, with all units factory-tested at the Jadcherla, Telangana facility before dispatch.

An OLTC (On-Load Tap Changer) allows the transformer's voltage ratio to be adjusted while the transformer is energised and under load - without interruption to supply. It is used in grid substations and industrial facilities where voltage must be regulated continuously to compensate for fluctuating loads. Trinity Cleantech power transformers are available with OLTC as an option alongside standard OCTC (Off-Circuit Tap Changer).

Trinity Cleantech power transformers serve state electricity utilities, grid substations, steel and cement plants, large manufacturing facilities, mining operations, renewable energy projects, and EV charging infrastructure requiring high-capacity power supply. The company has supplied over 25,000 transformers across 250+ projects in 18+ states across India.

All power transformers are designed, wound, assembled and tested at Trinity Cleantech's 20+ acre manufacturing facility located at Plot No. L19-L28, TSSIC Green Industrial Park, Jadcherla, Mahbubnagar District, Telangana - approximately 80 km from Hyderabad. The facility features automated production lines and in-house testing laboratories.

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Corporate Office

#9-1-83 & 84, Amarchand Sharma Complex,
Sarojini Devi Road, Secunderabad,
Telangana, India - 500003

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Manufacturing Plant

Plot No. L19-L28, TSSIC Green Industrial Park,
Jadcherla, Mahbubnagar District,
Telangana, India — 509302

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Get in Touch

+91 8019238877
marketing@trinitycleantech.com
www.trinitycleantech.com

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