Oil-immersed Transformer

Oil-immersed transformer is a core electrical device that uses insulating oil for both insulation and cooling, widely employed in power grids for safe and efficient voltage conversion.

Request a Quote

Oil-immersed Transformer

Main Features

Premium Components

For the generator, brushless motors from Marathon, Inge, Stamfford, and Voda are selected for superior reliability.

Robust Construction

Equipped with salient-pole integral rotor technology, ClassH insulation, and a steel plate frame.

Intelligent Control

Dedicated multi-functional intelligent control module enabling automatic start/stop, parameter display, and comprehensive protection functions.

Transformers are core equipment in power systems. Based on the principle of electromagnetic induction, they realize the increase (step-up) or decrease (step-down) of AC voltage, ensuring the long-distance transmission of electrical energy and the safe use of terminal equipment.

According to voltage level, phase number, cooling method, application, structural characteristics, etc., power transformers can be classified into various types, structures, and specifications, such as oil-immersed/dry-type transformers, step-up/step-down transformers, single-phase/three-phase transformers, and pad-mounted substations.

Based on your requirements, we can provide the cost-effective solutions for the transformers.

An Oil-immersed Transformer is a type of power transformer that uses insulating oil as the core insulation medium and heat dissipation medium. Its core components (iron core, windings) are fully immersed in the insulating oil sealed in the tank.

Through the dual functions of the insulating oil—isolating the core/windings from the tank (preventing short circuits) and transferring heat generated during operation to the tank wall (dissipating heat via natural convection or forced circulation)—it realizes the safe and efficient conversion of AC voltage, which is the most widely used transformer type in power industry.

Classified by cooling method, oil-immersed transformers can be further divided into ONAF(oil natural air forced),OFAF(oil forced air forced),OFWF(oil forced water forced),ODAF(oil directed air forced) and ODWF(oil directed water forced).