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Derived from 100% renewable vegetable oils, FR3 fluid is validated, field- and lab-tested, and in millions of distribution and power transformers (through Voltage Class 420kV and Rated Capacity 300MVA 3p and 200MVA 1p) worldwide. It’s proven to be the superior dielectric fluid to mineral oil, and is simply THE choice for dielectric fluid in use today. It’s the smart solution—for performance, value, and peace of mind.