Pre-magnetization is a process that consists of applying an initial magnetic flux to a transformer before its commissioning. This action significantly reduces inrush currents, which are very high current peaks that occur when a transformer is connected to the power grid.
Why is this important?
High inrush currents can damage transformer windings, cause overheating and reduce the service life of the transformer. Pre-magnetization helps to:
Reduce mechanical and thermal stress: By reducing inrush currents, equipment lifetime is extended.
Protect connected equipment: High inrush currents can affect other equipment connected to the network.
Improve energy efficiency: By reducing heating losses, energy consumption is optimized.
EREMU: Experts in pre-magnetization systems
At EREMU we are specialists in the design and manufacture of customized pre-magnetization systems. Thanks to our extensive experience, we can offer you customized solutions that adapt to the specific needs of your transformers.
How does a premagnetization system work?
A pre-magnetization system consists of an auxiliary magnetic circuit that induces a magnetic flux in the transformer core prior to its connection to the grid. This initial magnetic flux reduces the inductance of the transformer and consequently the inrush current.
Types of premagnetization systems
There are different types of premagnetization systems, which are classified according to the power supply and the way the magnetic flux is applied. Each type has its own advantages and disadvantages, and the choice of the most suitable system will depend on the characteristics of the transformer and the operating conditions.
The importance of a customized design
Each transformer is unique and requires a custom-designed premagnetization system. At EREMU, we analyze in detail the characteristics of your equipment to offer you an optimal solution that guarantees maximum protection and efficiency.
Conclusion
Pre-magnetization is an investment that pays off in the long run. By protecting your transformers and improving their efficiency, you will be contributing to the sustainability of your operations and reducing your maintenance costs.
Contact EREMU and find out how we can help you maximize the lifetime of your equipment.
