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Special Type
Transformers

Custom-engineered for demanding industrial applications - furnace duty, traction, rectifier and inverter duty, Scott-T, earthing and phase shifting transformers built to exact specification at our 20+ acre facility in Jadcherla, Telangana.

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special purpose transformer manufacturer Trinity Cleantech Jadcherla Telangana India
5MVA
Max Rating
About This Product

Custom-Engineered for Demanding Industrial Applications

Trinity Cleantech's special purpose transformers are custom-engineered for applications where standard distribution transformers cannot meet the duty requirements - covering furnace duty, traction supply, rectifier and inverter duty, Scott-T two-phase conversion, earthing and neutral grounding, and phase shifting. Each unit is designed to specification, manufactured, and tested at our 20+ acre facility in Jadcherla, Telangana.

Factory Tested BEE Compliant
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Built for Duty-Cycle Loads

Engineered to withstand the thermal and mechanical stress of arc furnace cycling, rectifier harmonics, and traction load variations

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EC Copper Winding

Electrolytic-grade copper ensures superior conductivity, heat dissipation and long winding life under continuous heavy-duty operation

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High Short-Circuit Withstand

Windings and core designed for higher short-circuit impedance and fault current withstand requirements of industrial and traction applications

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BEE Green Compliant

Certified green transformers with biodegradable ester oil options for sustainable and fire-safe operation

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

Detailed Product Parameters

special purpose transformer technical specifications Trinity Cleantech India

Salient Features

  • Custom-engineered for furnace duty, traction, rectifier/inverter duty, Scott-T, earthing and phase shifting applications
  • Electrolytic Grade (EC) copper winding for excellent conductivity and performance under heavy duty cycles
  • Prime Grade CRGO core material for lower losses and longer service life
  • Higher short-circuit impedance and fault withstand capability for industrial protection requirements
  • 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 5000 kVA, 33 kV Class
Duty
Outdoor
Applicable Standards
BS, SANS etc.
Losses
As per relevant standard / Customer requirement
Impedance
As per relevant standards or customer requirement
Tapping
OLTC
Vector Group
Dyn11, Dyn5, Yzn11, Ynd, Scott-T, Zig-Zag 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.

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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. Tested to IEC 60296 / IEC 61099.

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 Special Purpose Transformers

From electric arc furnaces to railway traction and rectifier duty installations - Trinity special purpose transformers serve every industrial application that demands a custom-engineered solution.

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Electric Arc Furnaces
High-current furnace duty transformers for steel, ferro-alloy, and foundry arc furnace installations requiring variable voltage and high short-circuit capacity
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Railway Traction
Single-phase traction transformers and Scott-T configurations for 25 kV AC railway electrification systems and traction feeder supply
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Rectifier & Inverter Duty
Converter duty transformers for electrochemical, chlor-alkali, and industrial rectifier applications - designed for high harmonic content and continuous DC loads
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Earthing & Neutral Grounding
Earthing transformers and neutral grounding units for creating artificial neutral points in ungrounded or delta systems for fault protection
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Scott-T & Phase Shifting
Scott-T and zigzag transformers for converting three-phase supply to two-phase and phase shifting applications for power system load balancing
How It Works

How Special Purpose Transformers Are Engineered to Specification

Unlike standard distribution transformers, special purpose transformers are designed around a specific duty cycle, load profile, and application requirement. The engineering process begins with the application - not a catalogue.

01
Application Duty Cycle Defined

The transformer is specified to its exact duty - whether that is continuous arc furnace current, high-harmonic rectifier load, Scott-T phase conversion, or traction supply. Duty cycle, peak-to- continuous ratio, and harmonic spectrum are defined first.

02
Core and Winding Configured for the Load

CRGO core geometry, winding configuration (disc, helical, or layer), conductor cross-section, and insulation system are all selected to handle the specific electrical and thermal stress of the target application.

03
Impedance and Short-Circuit Withstand Engineered In

Special purpose transformers typically require higher short-circuit impedance or specific impedance values for system protection. This is designed into the core-coil assembly - not added as an afterthought.

04
Factory Testing to Application-Specific Standards

Each unit undergoes routine tests (ratio, polarity, no-load loss, load loss, insulation resistance) plus type tests specific to the application - temperature rise and short-circuit withstand tests as applicable to BS, SANS etc.

Special Purpose Transformer Types
Furnace
Furnace Duty Transformer

Variable secondary voltage, high short-circuit capacity for electric arc and induction furnace installations in steel and foundry industries

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Traction
Traction & Scott-T Transformer

Single-phase 25 kV AC supply for railway electrification; Scott-T configuration converts three-phase grid to two-phase traction feeders

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Rectifier
Rectifier / Inverter Duty Transformer

Converter duty design for chlor-alkali, electrochemical, and industrial DC drive applications β€” rated for high harmonic content and continuous load

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

Request a Custom Special Purpose Transformer Quote

Share your application type (furnace, traction, rectifier, Scott-T, earthing), duty cycle, current and voltage requirements, and site conditions - our engineers will configure the exact special transformer you need.

All Transformer Types
Frequently Asked Questions

Everything You Need
to Know

Common questions about Trinity Cleantech special purpose transformers, types, ratings, and specifications.

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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.

A special purpose transformer is a custom-engineered power transformer designed for applications where standard distribution transformers cannot meet the specific duty, load profile, or electrical requirements. Types include furnace duty transformers for arc furnace installations, traction transformers for railway electrification, rectifier and inverter duty transformers for industrial DC loads, Scott-T transformers for three-phase to two-phase conversion, earthing transformers for neutral grounding, and phase shifting transformers for power system control.

Trinity Cleantech manufactures furnace duty transformers, traction transformers (including Scott-T configurations), rectifier and inverter duty transformers, earthing and neutral grounding transformers, phase shifting transformers, and other custom-engineered units to client specification. All types are available in oil-filled construction with CRGO core and EC copper winding, complying with IS:2026 and IEC:60076.

Trinity Cleantech manufactures special purpose transformers from 100 kVA up to 2500 kVA as standard, with higher ratings available on request depending on application type and duty cycle. Voltage class is up to 33 kV. Contact our engineering team for specific capacity and voltage requirements.

Trinity Cleantech special purpose 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.

A furnace transformer is designed for electric arc furnace duty - handling high secondary currents, rapid and frequent load variations, high mechanical forces from electromagnetic stress during arcing, and the thermal cycling of arc furnace operation. Standard distribution transformers are designed for stable, continuous loads and are not rated for the short-circuit forces and thermal cycles inherent to furnace duty.

Yes. Trinity Cleantech designs and manufactures Scott-T transformers for railway traction applications - converting three-phase grid supply to two-phase balanced supply for 25 kV AC traction feeders. Custom configurations are available. Contact our engineering team with your traction system specification.

All special purpose 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.

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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 β€” 509302

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Get in Touch

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

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