Features of Eco-Friendly Transformers Using Palm Fatty Acid Ester (PFAE), a New Vegetable-Based Insulation Oil

摘要

In response to a rise of concerns over the global environmental issues and demands for moving away from dependence on fossil fuel for the energy needs, the development of transformers using ester type of insulation oil is in progress. This type of oil is rich in biodegradability and is used to replace conventional mineral insulation oil. We manufacture and sell eco-friendly transformers using Palm Fatty Acid Ester (PFAE) as a vegetable-based insulation oil. The PFAE is a very green and potent high performance oil. Compared with mineral oils, its kinetic viscosity is low (0.6 times) and its dielectric constant is high (1.3 times). When it is applied to oil-immersed transformers, there is therefore a possibility that we can realize a compact design. When it is used as insulation oil, it offers outstanding features in terms of stable supply and oxidation stability. Presently, this type of insulation oil is used for nitrogen-sealed no-voltage tap-changing transformers as well as conservators and Vacuum Interrupter (VI) type on-load tap changers.