12-Pulse Transformer for Industrial Furnaces – 1800 kVA Mobile Solution
Maximum efficiency and stability for heat treatment: case study of a real application in a continuous plant
In the industrial heat treatment sector, ensuring a stable and efficient power supply is essential to guarantee the quality of production cycles. This case study presents the implementation of a 12-pulse low-voltage 1800 kVA transformer, designed to supply a continuous-cycle electric furnace in a production facility in Turkey.
Customer requirements: stability, efficiency, and operational flexibility
The customer had specific operational needs:
- • Voltage stability to maintain consistent thermal treatment quality.
- • Reduction of network harmonics to protect the control system and improve energy efficiency.
- • Mobile structure to enable easy movement of the transformer in line with production line changes.
Technical solution: 12-pulse low-voltage three-phase transformer
The solution developed was a three-phase low-voltage 1800 kVA transformer with a twelve-pulse configuration and a mobile structure.
Main features:
- • Rated power: 1800 kVA
- • Primary voltage: 690 V
- • Secondary voltage: 2x 400 V
- • Connection: Dd0/Dy1
- • Frequency: 50 Hz
- • Cooling: AN (natural air)
- • Reference standard: IEC 60076
- • Core: grain-oriented magnetic sheet, 45° Step-Lap cut
- • Windings: aluminum
- • Accessories: PT100 sensors for continuous thermal monitoring, wheels for internal handling
Advantages of the 12-pulse configuration
The use of a twelve-pulse configuration offered numerous technical benefits:
- • Harmonic reduction in the power grid, improving power quality.
- • Greater voltage stability, even under load variations.
- • Improved system efficiency, with lower losses and reduced overheating.
Logistics and installation
The transformer was delivered to Turkey in a dedicated crate. Thanks to the wheeled structure, it was easily moved inside the facility without the need for complex lifting systems.
Final result: long-term reliability and performance
- The installation resulted in a system that is:
- • Electrically stable and quiet
- • Energy-efficient
- • Easily relocatable, thanks to the mobile structure
- Additionally, the step-lap core contributed to:
- • Minimizing operational noise
- • Reducing magnetic losses and magnetizing current
- • Decreasing size compared to traditional cores
Customer satisfaction
The customer expressed full satisfaction with the solution, particularly appreciating:
- • High energy efficiency
- • Build quality of the transformer
- • Plant modularity enabled by the wheeled design
- • Low noise levels, essential in sensitive industrial environments
Conclusion
This project demonstrates how custom engineering, combined with advanced technologies such as the 12-pulse configuration and step-lap core, can ensure reliability, efficiency, and flexibility in complex industrial environments.
For more information on transformers for industrial furnaces or to request technical consulting, contact us.