As a special kind of electrical equipment, oil immersed transformers are unique in that the iron core and winding of the transformer are completely immersed in insulating oil. The role of insulating oil is crucial.
First of all, insulating oil plays the role of coolant. Oil immersed transformers generate a lot of heat continuously during continuous operation. With its good thermal conductivity, insulating oil can quickly and efficiently absorb this heat and dissipate it to the surrounding environment, so that the transformer is always maintained at a suitable operating temperature range. In this way, the transformer performance decline caused by overheating can be effectively avoided, and even the risk of equipment damage can be effectively guaranteed, which effectively guarantees the stable operation of the transformer.
Second, insulating oil is also a reliable insulating medium. Electric discharge and arc are potential safety hazards during transformer operation. The insulating oil can prevent these dangerous phenomena from happening by virtue of its excellent insulating performance, and build a solid defense line for the electrical safety of the transformer, thereby improving the operating efficiency and reliability of the transformer.
Moreover, oil immersed transformers are usually equipped with robust and well-sealed tanks. The oil tank is carefully constructed with durable materials to effectively isolate the internal components of the transformer from various pollutants and moisture in the external environment. This design creates a long-term stable operating environment for the transformer and significantly extends the service life of the equipment, even in harsh outdoor conditions.
In fact, there is no fixed cycle. This is because the oil replacement cycle will be affected by a combination of factors. The running load of transformer will directly affect the degradation speed of insulating oil. The degradation process of insulating oil of transformer under high load operation for a long time may be accelerated. The temperature, humidity and air quality of the operating environment will also affect the quality of the insulating oil. In high temperature, high humidity or seriously polluted environments, the insulating oil is more vulnerable to damage.
