Generator Step-up and Interconnecting Transformers for national and regional electricity grids.
Enabling Reliable and Efficient Power Transmission Networks
DeVoltrans Private Limited delivers advanced transformer solutions for power utilities and transmission networks, supporting the efficient transfer of electricity from generation sources to distribution systems. Our transformers are engineered to operate reliably under high-voltage conditions, ensuring stability, efficiency, and continuity of power supply across interconnected grids..
In modern power systems, transmission infrastructure plays a critical role in maintaining grid reliability and minimizing losses by stepping up voltage for long-distance transmission and regulating it across substations.
System Advantages
- High-capacity transformers up to 250 MVA, 400 kV
- Designed for continuous and heavy-duty operation
- Proven short-circuit withstand capability
- High efficiency with optimized electrical performance
- Superior voltage regulation and grid stability
- Robust mechanical and thermal design
- Compliance with IS / IEC / ANSI standards
- Tested in an NABL-accredited laboratory
Contact our engineering team to discuss your specific requirements.
Get in Touch →Our Capabilities
We design and manufacture transformers tailored for utility-scale transmission applications, addressing key operational challenges such as:
- High voltage and heavy load conditions
- Grid stability and voltage regulation
- Fault tolerance and short-circuit stresses
- Continuous operation in critical infrastructure
- Integration with regional and national grids
Applications
- Transmission Substations (220 kV, 400 kV and above)
- Grid Interconnection and Power Transfer
- Utility-Scale Power Networks
- Load Centers and Switching Stations
- Renewable Energy Evacuation Infrastructure
- Regional and National Transmission Systems
Technical Overview
| Voltage Class | Up to 400 kV |
| Power Rating | Up to 250 MVA |
| Frequency | 50 Hz / 60 Hz |
| Cooling Methods | ONAN / ONAF / OFAF / OFWF |
| Tap Changer | OLTC with AVR |
| Insulation Fluid | Mineral Oil / Ester Oil (Optional) |
| Standards | IS / IEC / ANSI |
| Testing | NABL-Accredited Laboratory |
Why DeVoltrans
- Designed for high-voltage transmission applications
- Reliable performance in critical grid infrastructure
- Custom-engineered solutions for utilities and EPC contractors
- Strong focus on efficiency and lifecycle cost optimization
- Proven capability in handling demanding transmission environments
Relevant Products
Power Transformers
DeVoltrans Private Limited manufactures high-capacity power transformers designed for reliable and efficient operation across national and regional transmission networks. Engineered using advanced design methodologies and premium-grade materials, our transformers deliver superior electrical performance, high thermal stability, and robust mechanical strength. Each unit is customized to meet specific project requirements and complies with internationally recognized standards. Designed for long service life and dependable performance under demanding grid conditions, DeVoltrans transformers are ideal for utilities, power generation plants, substations, and large-scale industrial applications.
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Ester-Filled Transformers
DeVoltrans Private Limited manufactures advanced Ester-Filled Transformers designed to deliver superior fire safety, environmental sustainability, and reliable performance for modern power infrastructure. Unlike conventional mineral oil transformers, ester-filled transformers use biodegradable and high fire-point insulating fluids, making them ideal for installations in environmentally sensitive, densely populated, and high-risk locations. Engineered for enhanced thermal performance and extended insulation life, these transformers provide improved overload capability, reduced environmental impact, and greater operational safety. Designed in compliance with international standards, DeVoltrans ester-filled transformers are suitable for utilities, renewable energy projects, transportation systems, commercial infrastructure, and industrial applications where safety and sustainability are critical.
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AluCop Transformers
DeVoltrans Private Limited manufactures high-performance AluCop Transformers engineered to provide an optimized balance between performance, weight reduction, and cost efficiency. Designed using a combination of aluminum and copper conductor technology, AluCop transformers offer reliable electrical performance while reducing overall material cost and transformer weight. These transformers are specifically developed for applications requiring economical and efficient power solutions without compromising operational reliability. Built with advanced engineering practices and high-quality insulation systems, DeVoltrans AluCop transformers deliver dependable performance across utilities, industrial facilities, renewable energy systems, and infrastructure projects.
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Repair & Augmentation
DeVoltrans Private Limited offers comprehensive Repair & Augmentation Services to extend the operational life and enhance the performance of power transformers. Covering the full lifecycle of transformer maintenance, our solutions range from routine repairs to complete refurbishment, MVA uprating, and vector group conversions. By restoring and upgrading existing assets, we help utilities and industries improve efficiency, reliability, and capacity — at a fraction of the cost of new equipment. Our services are executed with precision, adhering to the highest industry standards and quality protocols.
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