What Is the Working Principle of Oil Immersed Transformer?

Oil-immersed transformer is a widely used electrical equipment. Its operation is based on the basic mutual inductance principle of the transformer and is designed to convert the input voltage into the required output voltage.

The equipment is mainly composed of two core components: iron core and winding. The iron core, made of carefully stacked layers of insulating materials, plays a key role in enhancing the efficiency of magnetic flux conduction. The winding is composed of carefully wound conductive coils, which are divided into two parts: input winding and output winding.

When the input current flows through the input winding, a magnetic field is excited, which then acts on the core. Thanks to the excellent magnetic permeability of the iron core, the magnetic flux can be smoothly transferred to the output winding. Based on the esoteric principles of electromagnetic induction, the magnetic field in the output winding further induces the output voltage.

In order to further improve the operating efficiency and safety performance of the transformer, oil-immersed transformers are immersed in insulating oil. This kind of insulating oil not only has excellent heat dissipation capabilities, but also provides insulation protection, thereby significantly enhancing the voltage resistance of the transformer and effectively preventing breakdown accidents in the windings and core due to excessive voltage.

In addition, oil-immersed transformers are equipped with auxiliary monitoring equipment such as oil level gauges and thermometers. These devices can monitor the level and temperature of the insulating oil in real time. Once potential problems such as low oil level or abnormal temperature are detected, they can quickly issue an alarm so that necessary repair or maintenance measures can be taken in a timely manner.