480 220 xfmr 2.pdf

This image is a product nameplate/specification label for a Federal Pacific Electric (FPé) dry type transformer, Class AA, Model 16B, manufactured by Federal Pacific Electric Company in Des Plaines, Illinois.

The transformer is rated at 100 KVA with a single-phase configuration. High voltage (H.V.) connections are 240 x 480 volts, while low voltage (L.V.) connections are 120/240 volts at 60 Hz. Temperature rise specifications are listed at 150°C, 115°C, and 80°C across different load conditions. The unit has an impedance (% Z) of 4.9, 4.1, and 3.3 respectively. The transformer features multiple high voltage connection options (500, 492, 480, 468, 460, 444, 432 volts and others) with corresponding amperage ratings ranging from 198 to 231 amps, each with specific connection terminal configurations (2 TO 3, 3 TO 4, 4 TO 5, etc.). Low voltage connections accommodate 240, 120, and 240/120 volt configurations with maximum KVA ratings of 417 and 833 amps. The unit carries UL listing as a power transformer (84H category) and is identified by catalog number 50055-M. The transformer weighs 518 pounds and includes additive polarity configuration for low voltage connections.