Öljyeristettyjä

Öljyeristettyjä is a Finnish term that translates to "oil-insulated" or "oil-filled" in English. It refers to a type of electrical equipment that utilizes oil as an insulating and cooling medium. This method is commonly employed in high-voltage electrical apparatus such as transformers, circuit breakers, and bushings.

The primary function of the oil in these devices is to provide electrical insulation between energized components and the surrounding environment, preventing electrical discharges or short circuits. Additionally, the oil absorbs the heat generated during operation, particularly in transformers where it circulates to dissipate heat from the windings and core. This cooling process is crucial for maintaining the equipment's operational efficiency and preventing overheating, which can lead to damage and failure.

Different types of oils are used, including mineral oils, synthetic oils, and vegetable-based oils, each with specific dielectric strength, viscosity, and fire point characteristics suitable for various applications. The oil is typically contained within a robust casing, and its level and condition are monitored to ensure reliable performance. Öljyeristettyjä technology has been a cornerstone of electrical power transmission and distribution for decades due to its effectiveness and reliability in handling high electrical stresses and thermal loads.