AmerenUE has installed a gas-insulated transformer supplied by Toshiba International Corp. at its 230.75-MW Osage project, marking the first use of this technology at a hydro plant in the U.S. This transformer uses SF6 gas for insulation and cooling instead of oil. This type of transformer is non-flammable and non-explosive. In addition, use of the gas eliminates the chances of an environmentally-unfriendly oil spill.
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