What are the standards for transformer oil testing?

The standards for transformer oil testing primarily include ASTM D3487, which details the specifications for new mineral insulating oil, and ASTM D923, focusing on the properties of used oils. Additionally, IEC 60296 sets international standards for the quality of insulating oils, while ASTM D5864 is used for evaluating the degree of oxidation in insulated oils. When conducting these tests, it’s essential to employ a reliable testing device to ensure precise measurements and diagnostics, especially when considering methods like how to test a transformer with a multimeter, which can help assess insulation resistance and overall oil integrity. By adhering to these standards and employing effective testing methodologies, you ensure the reliability and performance of transformers in industrial applications.