What tests are carried out on transformer oil?

Tests carried out on transformer oil include dielectric strength testing, which measures the oil’s ability to withstand electrical stress, and moisture content analysis, which determines the presence of water that can degrade performance. Additionally, dissolved gas analysis (DGA) is performed to detect gases produced by insulation breakdown, while acidity tests assess the oil’s degradation level. These tests ensure the reliability and longevity of transformer oil in power transformers.