An oil-immersed transformer utilizes insulating oil as its primary dielectric medium. The internal windings and core are fully immersed in this oil within the tank. Heat generated inside the transformer is transferred via the oil to external radiators, where it is dissipated through natural convection or forced convection (using fans/pumps).

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Advantages

(1) Excellent Insulation Performance:​ Insulating oil possesses high dielectric strength, effectively reducing the risk of electrical leakage and breakdown. Furthermore, the presence of oil inhibits oxygen from entering the transformer, slowing down the oxidation and aging of insulation materials.

(2) Superior Cooling Efficiency:​ Oil-immersed transformers transfer heat effectively to external radiators. The oil’s high specific heat capacity and thermal conductivity result in significantly better cooling performance compared to air-cooled systems.

(3) Low Noise Operation:​ Compared to dry-type transformers, oil-immersed transformers operate at a lower noise level, making them suitable for applications where noise control is required.

Disadvantages

(1) Large Footprint:​ Due to the requirement for a separate oil tank, conservator, and associated piping, oil-immersed transformers generally occupy more floor space than dry-type transformers.

(2) Risk of Oil Contamination:​ Since the insulating oil can become contaminated over time, regular inspection, maintenance, and oil treatment are necessary to ensure the reliable operation of the transformer.

Applications

Oil-immersed transformers are suitable for large-scale power applications, particularly under high-power and high-voltage loads. They are commonly employed by power supply bureaus (utilities), power generation plants, and large industrial and mining enterprises.

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The oil immersed transformer S22 represents a top-tier energy-saving power distribution unit. Adopting advanced core material and optimized winding design, the oil immersed transformer S22 achieves ultra-low no-load and load loss. The insulating oil inside offers excellent cooling and insulation, supporting continuous stable operation even under heavy loads. Strict production tests ensure the oil immersed transformer S22 runs with low noise and strong adaptability for outdoor and industrial power projects. Many power contractors and factory operators face annoying troubles. Old transformers waste massive electricity, generate unstable voltage and need frequent maintenance. High power consumption pushes up long-term operational costs, and sudden shutdowns interrupt production. Our oil immersed transformer S22 solves these key pain points. It cuts power consumption greatly, stabilizes voltage output and reduces maintenance frequency for your power system. A manufacturing plant upgraded its power station with our oil immersed transformer S22 last year. Monthly electricity costs dropped remarkably, and voltage fluctuation issues disappeared. The transformer maintained steady performance during peak production hours without overheating. This practical case proves the oil immersed transformer S22 brings obvious economic benefits for industrial users. For industrial parks, mining sites and municipal power grids, the oil immersed transformer S22 is your ideal power solution. With reliable structure and first-class energy efficiency, this oil immersed transformer S22 minimizes operation costs and guarantees safe, continuous power supply for all your power distribution demands.