Insulating liquid is a liquid material with insulating properties. It plays a role in insulation, cooling, impregnation, and filling in electrical products, as well as in arc extinguishing in oil switches and energy storage in capacitors. It can be refined from mineral oil, artificially synthesized, or extracted from vegetable oil. The most commonly used are transformer oil, capacitor oil, and insulation oil for power cables. Insulating liquid is a liquid used to isolate conductive materials with different potentials, also known as insulating oil. It mainly replaces gas and fills the gaps inside or between solid materials to improve their dielectric properties and improve the heat dissipation capacity of the equipment. Oil materials used as insulation media are mainly used in electrical products such as transformers, oil switches, capacitors, and cables. For example, in oil-immersed paper insulated power cables, it not only significantly improves insulation performance but also enhances heat dissipation; Improve the dielectric performance of capacitors and increase the energy storage per unit volume; In addition to insulation, it mainly serves as arc extinguishing in switches
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