What factors affect the dielectric strength of transformer oil?

Several factors can affect the dielectric strength of transformer oil, including the presence of contaminants such as water and particulate matter, which can significantly reduce its insulating properties. The temperature of the oil also plays a critical role, as elevated temperatures can lower the dielectric strength. The chemical composition and age of the oil are important too; aging can lead to the formation of acids and sludge that degrade the oil’s performance. Additionally, the presence of bubbles or dissolved gases in the oil can compromise its dielectric strength. Regular tests using Globecore devices to check for dielectric strength and water content in transformer oil are essential to ensure optimal performance and reliability.