Power Transformers
3Si Eco Power transformers are based on significant Design Excellence and Process Excellence. We manufacture Power transformers, from 3.15 MVA to 16 MVA with voltages up to 36kV. Depending on the customer specifications, power transformers are offered with either off circuit tap changer or with On load tap changers. We understand and manufacture transformers to help maintain voltage levels within acceptable limits, which is essential for the stable operation of electrical grids. They also support fault management and system protection.
Applications
- Transmission Networks: Used in high-voltage transmission lines to reduce losses over long distances.
- Distribution Systems: Step down voltage for safe delivery to residential and commercial customers.
- Industrial Applications: Supply power to large machinery and equipment.




Key Features
- Design: Inhouse design with experts.
- Voltage Transformation: Power transformers are used to increase (step up) or decrease (step down) voltage levels, making long-distance transmission of electricity more efficient.
- Core Construction: They typically have a magnetic core made of laminated steel to minimize energy losses due to eddy currents.
- Winding Types: Transformers can have different winding configurations (e.g., delta or wye) depending on the application and desired characteristics.
- Cooling Methods: Power transformers can be oil-filled, air-cooled, or use other cooling methods to manage heat generated during operation.
- Efficiency: High efficiency is critical, often exceeding 98%, to minimize energy losses.
Advantages
- Reliability: Our well-designed power transformers have long service lives and require relatively low maintenance.
- Scalability: Built to handle various power ratings and voltages, making them versatile for different applications.
- Performance: Provide stable voltage regulation and improved system reliability.
Key Considerations
- Efficiency: Power transformers are designed for high efficiency, minimizing energy loss through heat.
- Regulation: Voltage regulation is crucial, especially in power & distribution systems, to ensure consistent voltage levels.
- Environmental Impact: There’s a push for more eco-friendly insulating fluids and practices to mitigate the environmental risks associated with traditional transformer oils.
- Safety: Proper grounding, protection from overloads, and regular maintenance are vital for safe operation.
- Monitoring and Diagnostics: Advanced monitoring systems can detect faults and monitor parameters like temperature, humidity, and insulation condition to prevent failures.
Recommended Maintenance Practices
- Routine Inspections: Regular visual checks for leaks, corrosion, and physical damage.
- Fluid Analysis: Testing the insulating oil for dissolved gases, moisture, and contaminants.
- Electrical Testing: Periodic insulation resistance testing and power factor testing.
- Thermal Imaging: Identifying hotspots that may indicate potential failures.