The specialized production of insulation oil dielectric strength tester for UHV power can help many power workers conduct various power tests more conveniently.

1. Insulation: In electrical equipment, transformer oil can isolate charged parts with different potentials to prevent short circuits during travel, as the dielectric constant of air is 1.0, while the dielectric constant of transformer oil is 2.25. That is to say, the insulation strength of oil is much greater than that of air.

The instruments for testing the dielectric strength of transformer insulation oil mainly include HM801 transformer oil bdv tester and HM803 three cup transformer oil bdv tester

2. Heat dissipation and cooling effect: Transformers in operation generate heat due to resistance losses and other losses, which must be transferred to the transformer oil and carried away by it.

3. Arc extinguishing function: In the switchgear, the transformer mainly functions to extinguish the arc. When the oil switch cuts off the electrical load, an arc will occur between the contacts. The high temperature generated by the arc will cause severe thermal decomposition of the oil, resulting in a large amount of hydrogen gas. Due to its high thermal conductivity, hydrogen can absorb a large amount of hydrogen gas. Heat up and transfer this heat to the oil until the contact cools down, thus achieving the purpose of extinguishing the arc.

4. The function of protecting the iron core and coil components.

5. Delaying the corrosion of insulation materials by oxygen.

In summary, transformer oil mainly serves as insulation, heat dissipation, and cooling in equipment structures such as transformers, reactors, and transformers. It also plays a role in insulation in oil filled bushings and serves as an arc extinguishing and insulation agent in oil switches.