| 摘要 |
PURPOSE: A switchgear is provided to enhance the overall thermal effect of switchgear by changing the structure of a heating system which cools heat generated from insulating oil received inside a transformer. CONSTITUTION: A transformer(10) comprises a transformer case(100), a voltage transformation unit(200), insulating oil(300), a radiator(400), and a refrigeration cycle apparatus(500). A transformer case(100) forms an outer tube of the transformer(10) in a cuboidal shape. A voltage transformation unit(200) is installed on the transformer case through the supporting frame(240). Insulating oil(300) reduces heat generated from the voltage transformation unit inside the transformer case. A radiator(400) is installed outside the transformer case and allows the first heat radiation by circulating insulating oil. A refrigeration cycle apparatus(500) is installed on the upper side of a voltage transformation unit and allows the second heat radiation. |
