End of an Era for Silicone Transformer Fluids?

Glancing back to the 1970s, those of us in the power sector can remember when polychlorinated biphenyls (PCBs) were the cooling liquid of choice for transformers in locations where fire risk was a critical consideration. Then it happened — PCBs were classified as carcinogenic and persistent organic pollutants. A safer replacement liquid was needed, and […]