What is the significance of PCB in transformer oil analysis?

The significance of PCB in transformer oil analysis lies in its role as a hazardous contaminant. Polychlorinated biphenyls (PCBs) can be present in older transformer oils and pose environmental and health risks. Analyzing transformer oil for PCB content is crucial for compliance with regulations, ensuring safe disposal, and preventing potential leaks that could lead to soil and water contamination. Monitoring PCB levels helps maintain the integrity and safety of power transformers.