Distribution transformer Envirotemp™ FR3™

immersedPCBoil-insulated

SPX Transformer Solutions typically uses inhibited mineral oil in its transformers which is refined especially for use in transformers in accordance with ANSI/ASTM D3487. In addition to extensive testing by an independent laboratory to determine approved sources of supply, SPX Waukesha performs acceptance tests on each shipment of oil received. SPX Waukesha receives its oil in dedicated tank cars and trucks. Samples are taken from the bottom, middle and top of the tank cars before placing the oil in bulk containment units. The new oil is then vacuum degassified and stored for use. SPX Waukesha reprocesses oil again at each point of use throughout the plant. All Waukesha® transformer oil is PCB-free per EPA definition 7-179. Although mineral oil is the most common insulating fluid used at both plants, other options are available upon request, including Envirotemp™ FR3™ natural ester fluid.