Challenger Electrical Model DT3 General Purpose Power Transformer. Catalog Number 302-415-MOD.5. Class AA, Type 2 Enclosure, Class 220 Insulation System, 30 kVA, 150 Degrees C Rise, 3 Ph, 60 Hz, H.V. 480 Delta, 5.6 % IZ at 170 Degrees C, L.V. 208 Y/120.
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