Get current pricing for National Industri, National Industri-48115-ID National Industri Dry Transformer. 500 Kva. 01317-1. 3 Phase, 60 Hz. Voltage: 2400 Delta To 480y/277. Temp Rise 80 Deg C, 4.04% Iz @ 100c. Ins. Sy . Product Category: Process Equipment, Sub Category: Power Generation: