Product Description
Oil-immersed transformers are power transformers that use oil as both an insulating and cooling medium. The main components of an oil-immersed transformer include the core, windings, tank, conservator (oil conservator), breather, pressure relief valve (explosion vent), radiators, insulating bushings, tap changer, gas relay, thermometer, and oil purifier. The working principle of an oil-immersed transformer is to use electromagnetic induction in the core and windings to transmit and transform electrical energy. The high-voltage winding receives high-voltage electrical energy, and the alternating electromagnetic field generated is conducted through the core to the low-voltage winding, thereby inducing an electromotive force in the low-voltage winding, achieving the transmission and transformation of electrical energy.
The advantages of oil-immersed transformers include:
1. High heat capacity: Insulating oil has a high heat capacity, which can effectively conduct and dissipate heat, allowing the transformer to work stably under high loads.
2. High electrical strength: Insulating oil has a high dielectric strength, which can effectively prevent arc discharge and protect the windings and equipment.
3. Low cost: Compared with dry-type transformers, the manufacturing cost of oil-immersed transformers is lower.
Oil-immersed transformers are widely used in power transmission and distribution, especially in high-voltage, high-capacity applications, such as power substations and industrial electricity use. They are usually installed in separate transformer rooms and rely on oil as a cooling medium, with cooling methods including oil-immersed self-cooling, oil-immersed air cooling, oil-immersed water cooling, and forced oil circulation. Transformer oil not only serves as an insulating medium but also protects the core and windings from moisture in the air, reducing the aging of insulating materials and extending the life of the transformer.
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