Home About Us Transformers Substations Off Grid Charger Grid Chargers Contact Us
India's Trusted Power Infrastructure Partner

Inverter Duty
Transformers

Purpose-built for solar power plants and industrial variable frequency drives - engineered to handle harmonic-rich inverter output continuously without derating, with reinforced insulation and low eddy current losses. Manufactured and tested at our 20+ acre facility in Jadcherla, Telangana.

Explore Solutions Contact Us
01 / 03
inverter duty transformer for solar and industrial VFD applications manufactured by Trinity Cleantech Telangana India
5MVA
Max Rating
About This Product

Engineered for Harmonic Loads - Solar and Industrial Inverter Duty

Trinity Cleantech's inverter duty transformers are purpose-built for applications where the load is generated or controlled by power electronics - solar PV inverters, variable frequency drives (VFDs), and industrial converter installations. Designed with reinforced insulation, low eddy current losses in windings, and de-rated core flux to continuously handle the high harmonic content produced by inverters. Each unit is manufactured and tested at our 20+ acre facility in Jadcherla, Telangana.

IS:2026 / IEC:60076 Factory Tested BEE Compliant CRGO Core
⚡
Harmonic-Tolerant Design

Windings and core designed for continuous operation under harmonic-rich inverter output without derating or accelerated ageing

🔩
Low Eddy Current Losses

Transposed and continuously-wound EC copper conductors minimise eddy current heating under non-sinusoidal waveforms from VFDs and solar inverters

🛡️
Reinforced Insulation System

Thermally upgraded insulation rated for the higher thermal stress of harmonic loading - extended insulation life under continuous inverter duty

🌿
BEE Green Compliant

Certified green transformers with biodegradable ester oil options for solar plants requiring eco-compliant and fire-safe installations

100kVA
Minimum
Rating Available
5MVA
Maximum Inverter Duty
Transformer Rating
33kV
Maximum
Voltage Class
25K+
Transformers Supplied
Across India
Technical Specifications

Detailed Product Parameters

inverter duty transformer technical specifications Trinity Cleantech India

Salient Features

  • Purpose-built for solar PV inverter, VFD drive, and industrial converter duty applications
  • Electrolytic Grade (EC) copper winding with transposed conductors to minimise eddy current losses under harmonic loading
  • Prime Grade CRGO core with de-rated flux density for lower core losses under non-sinusoidal waveforms
  • Reinforced insulation system for extended thermal life under continuous harmonic-rich loads
  • Available in all vector groups and tapping arrangements - 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, 100 kVA up to 5 MVA, 33 kV Class
Duty
Outdoor
Applicable Standards
IS: 2026, IEC: 60076, BS, SANS
Losses
As per relevant standard / Customer requirement
Impedance
As per relevant standards or customer requirement
Tapping
OLTC
Vector Group
Dyn11, Dyn5, Yzn11, Ynd etc.
Frequency
50 Hz
Insulation Class
A, B
Cooling
ONAN / ONAF
Winding Material
Copper (Cu) / Aluminium (Al)
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.

🔲
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
🔩
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
🛢️
Insulating Fluid

High-quality transformer mineral oil or biodegradable synthetic ester oil - providing both electrical insulation and heat transfer. Tested to IEC 60296 / IEC 61099.

Ester oil for fire safety & eco compliance
🏗️
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 Inverter Duty Transformers

From utility-scale solar farms to industrial VFD installations - Trinity inverter duty transformers serve every application where power electronics generate harmonic-rich loads that standard transformers cannot continuously handle.

☀️
Solar PV Power Plants
Step-up transformers connecting solar inverters to the grid - designed for the harmonic spectrum and rapid generation cycling of PV inverter output
⚙️
Variable Frequency Drives
Isolation and supply transformers for industrial VFD drive systems - handling high harmonic current content from PWM inverter switching
🏭
Industrial Converter Duty
Converter and rectifier duty transformers for steel rolling mills, paper mills, and process industries with large drive installations
🔋
Battery Energy Storage
Grid-tie transformers for BESS installations - handling bidirectional inverter operation and the harmonic profile of battery charge-discharge cycles
🌬️
Wind & Hybrid Renewable
Inverter duty transformers for wind-solar hybrid parks and full-converter wind turbine configurations requiring harmonic-tolerant grid connection
How It Works

How an Inverter Duty Transformer Handles Harmonic Loads

An inverter duty transformer is specifically designed to operate continuously with the non-sinusoidal, harmonic-rich output of power electronic inverters - without the accelerated heating, insulation degradation, and derating that would affect a standard distribution transformer.

01
Inverter Output Enters Primary Winding

The solar inverter or VFD drive output - containing fundamental frequency plus high-order harmonics from PWM switching - enters the transformer primary winding, which is wound with transposed conductors to minimise eddy current losses at each harmonic frequency.

02
De-Rated CRGO Core Absorbs Non-Sinusoidal Flux

The CRGO silicon steel core is operated at reduced flux density compared to a standard transformer - this de-rating provides headroom to absorb harmonic flux components without driving the core into saturation or excessive heating.

03
Voltage Stepped Up or Down at Secondary Winding

The secondary winding delivers the required voltage at the output terminals - stepping up for grid injection from a solar plant or stepping down to match drive input requirements. Reinforced insulation handles the higher voltage stress from harmonic waveform peaks.

04
Enhanced Cooling Manages Harmonic Heat

Mineral or ester oil circulates around the core and windings - critical for inverter duty transformers where harmonic losses generate additional heat beyond what standard load loss calculations predict. Cooling is sized for the actual harmonic-inclusive thermal load.

Inverter Duty Transformer - Typical Configurations
415V
Solar Inverter Output

Solar PV inverter output at 415V (LV) enters transformer primary for step-up to grid injection voltage

↑
11kV
Step-Up to Collector Voltage

Transformer steps up to 11 kV for transmission through the solar plant collector cable network to the substation

↑
33kV
Grid Injection Voltage

Aggregated solar farm output injected at 33 kV into the regional transmission grid via the collector substation

98%+
Typical efficiency of Trinity inverter duty transformers
25yr+
Expected service life under rated inverter duty conditions
50Hz
Operating frequency for India's power grid standard
33kV
Maximum voltage class for our inverter duty range
Ready to Order?

Request a Custom Inverter Duty Transformer Quote

Share your inverter type (solar, VFD, converter), rated capacity, harmonic spectrum or K-factor, voltage class, and site conditions - our engineers will configure the exact inverter duty transformer you need.

All Transformer Types
🏢

Corporate Office

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

🏭

Manufacturing Plant

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

📧

Get in Touch

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

Frequently Asked Questions

Everything You Need
to Know

Common questions about Trinity Cleantech inverter duty transformers, ratings, and specifications.

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

An inverter duty transformer is a power transformer specifically designed to operate continuously with the non-sinusoidal, harmonic-rich output of power electronic inverters - such as solar PV inverters, variable frequency drives (VFDs), and industrial converters. Unlike standard distribution transformers, inverter duty transformers use transposed copper conductors to minimise eddy current losses, de-rated core flux density for harmonic headroom, and reinforced insulation systems to handle the higher thermal stress of harmonic loading without derating or premature failure.

A standard distribution transformer is designed for sinusoidal loads at power frequency. An inverter duty transformer is designed for non-sinusoidal harmonic-rich loads from power electronics. Key differences: transposed winding conductors to reduce eddy current losses at harmonic frequencies; de-rated core flux density to handle harmonic flux without saturation; reinforced insulation for higher thermal and voltage stress; and cooling sized for actual harmonic-inclusive losses rather than standard load loss calculations alone.

Trinity Cleantech manufactures inverter duty transformers from 100 kVA up to 2500 kVA as standard, with higher ratings available on request. Voltage class is up to 33 kV. Both OCTC and OLTC tapping options are available. Contact our engineering team with your inverter rating, harmonic spectrum, and voltage requirements for a custom configuration.

Yes. Trinity Cleantech inverter duty transformers are suitable for solar PV power plants - designed to handle the harmonic output of solar string and central inverters, rapid generation cycling from cloud transients, and the thermal cycling of daily solar generation profiles. Biodegradable ester oil options are available for solar plants requiring eco-compliant and fire-safe transformer installations.

Trinity Cleantech inverter duty transformers comply with IS:2026, IEC:60076, IS:1180, BS, and SANS as applicable. The company holds BIS certification, ISO 9001:2015, ISO 14001:2015, and ISO 45001 certifications. All units are 100% factory-tested at the Jadcherla, Telangana facility before dispatch.

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

Get a free quote