U.S. Dry Type Transformer Market Size, Share & COVID-19 Impact Analysis, By Technology (Cast Resin and Vacuum Pressure Impregnated), By Phase (Single-Phase and Three-Phase), By Rating (Less than 5 MVA, 5 MVA to 30 MVA, and More than 30 MVA), By Installation (Outdoor and Indoor), By Application (Industries, Inner-City Substations, Indoor and Underground Substations, Renewable一代以及其他国家和国家预测，2023-2030