What is oil immersed transformer?
introduce of oil immersed transformer
Electric transformers can be classified according to the insulation and cooling medium of the windings, mainly liquid-impregnated, gas and dry-type transformers. Liquid-impregnated transformers use insulating liquid to impregnate the windings and the insulation outside the windings. The insulating liquid is not only used as an insulating liquid, but also as a medium for cooling the windings. The insulating liquids used in transformers include transformer oil, polychlorinated biphenyls, silicone oil, alpha oil, beta oil and formel liquid.
Regarding oil-immersed transformers, their transformer oil is a petroleum-based liquid that is likely to burn, so it has disadvantages in terms of environmental protection. However, because of the excellent performance and low price of transformer oil, most power transformers still use transformer oil as an insulating and cooling medium. At the end of the 19th century, transformers this industry began to use transformer oil as an insulating and cooling medium(YAWEI TRANSFORMER was established in 1993 and has the most extensive experience in transformer manufacturing.), and then the oil-immersed transformers appeared. In addition to its abundant natural storage and low price, transformer oil has the following characteristics, so it is widely used:
(1)When used in combination with fiber materials, it has good insulation performance, can reduce insulation distance and reduce costs.
(2)Transformer oil has low viscosity and good heat transfer performance.
(3)It can protect the core and winding well from the influence of moisture in the air.
(4) It protects insulating paper and insulating cardboard from the effects of oxygen, reduces the aging of insulating materials and extends the life of the transformer.
At present, except for some small and medium-capacity transformers and gas transformers for special purposes, most large and medium-sized transformers still use transformer oil as a cooling and insulating medium. The heat resistance grade of the transformer impregnated with transformer oil is Class A, and the long-term operating temperature is 105 degrees Celsius.
key features of oil immersed transformer
According to the text above, we can know that an oil-immersed transformer is a type of electrical transformer that is submerged in oil for insulation and cooling purposes. Here are the key features of oil immersed transformers:
Insulation: In the oiled immersed transformers, the oil serves as an insulating medium, whtich prevents electrical breakdown between the transformer's windings and core.
Cooling: The oil also dissipates heat whitch generated during operation, helping to maintain optimal operating temperatures.(Click to learn about the cooling method and temperature rise of oil immersed transformer)
Construction: These type of transformers typically have a sealed tank that filled with mineral oil. The transformers' windings' material is copper or aluminum, and the core is made of laminated silicon steel.
Applications: The oil-immersed transformers are commonly used in power distribution networks(such as distribution transformer, pole mounted transformer,pad mounted transformer), substations(such as substation transformer), and industrial applications where high voltage and large power capacities are required.
Advantages:
Due to different cooling media, oil immersed transformers have better cooling efficiency than dry-type transformers.
Compared with other types of transformers, oil immersed transformers have higher power rating capability.
Oil immersed transformers' longevity is longer and the reliability is more guaranteed in harsh conditions than others.
Maintenance: Regular checks are needed for transformers' oil quality and levels, and according to this to monitor for if the oil leaks.
Overall, oil-immersed transformers are crucial for efficient power transmission and distribution in various electrical systems.YAWEI TRANSFORMER can supply the most comprehensive technology and quality assurance.
