What is the meaning of PCB in transformer oil?

PCB in transformer oil refers to polychlorinated biphenyls, which are a group of synthetic organic chemicals. Historically, PCBs were used in transformer oil for their excellent insulating properties and thermal stability. However, due to their environmental persistence and potential health risks, the use of PCB-containing transformer oil has been banned in many countries. Proper disposal and management of PCB-laden transformer oil are critical to prevent environmental contamination.