Oil Immersed Transformer

The oil-immersed transformer, with its outstanding performance and wide applicability, has become a key player in the power industry.

The oil-immersed transformer adopts an insulation oil circulation cooling system, which has high heat dissipation efficiency and can support large-capacity and high-voltage scenarios (such as ultra-high voltage power transmission and power plants), with voltage levels up to 110kV or above, and a capacity exceeding 10MVA. This characteristic gives it significant advantages in outdoor substations, industrial parks and other scenarios that require high-load support.

●The core is composed of silicon steel sheets stacked together with good magnetic conductivity. It forms a closed magnetic flux circuit. The primary and secondary windings of the transformer are both wound around the core.

●The winding, also known as the coil, is the conducting circuit of the transformer. It is made by winding copper or aluminum wires into multiple layers of a cylindrical shape. The primary and secondary windings are concentrically placed on the iron core column. To ensure insulation, the low-voltage winding is usually inside and the high-voltage winding is outside. Insulating materials are wrapped around the wires to ensure insulation between the wires and between the wires and the ground.

●The oil tank is the outer casing of an oil-immersed transformer. Besides holding the oil, its function also includes accommodating other components.

●The voltage regulating device is set up to ensure the stability of the secondary voltage of the transformer. When the power supply voltage fluctuates, the voltage regulating device is used to adjust the tap switch of the transformer to maintain the stability of the secondary output voltage. The voltage regulating devices are divided into on-load voltage regulating devices and off-load voltage regulating devices.

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