THIS HPS SG3C0045KD SENTINEL G TRANSFORMER FEATURES A 45 KILOVOLT AMP POWER RATING AND 3 PHASE OPERATION AT A 60 HERTZ FREQUENCY. IT HAS A 480 VOLT AC DELTA PRIMARY VOLTAGE AND A 240 VOLT DELTA/120 VOLT AC SECONDARY VOLTAGE. THE TRANSFORMER UTILIZES AN ALUMINUM WINDING TYPE AND HAS A 150 DEGREE C TEMPERATURE RISE. THE UNIT IS DESIGNED FOR FLOOR/WALL MOUNTING AND IS HOUSED IN A NEMA 3R, VENTILATED ENCLOSURE WITH AN ANSI 61 GRAY FINISH. ITS DIMENSIONS ARE 25.8 INCHES WIDTH X 23.8 INCHES DEPTH X 28.8 INCHES HEIGHT, WITH A 380-POUND WEIGHT. IT IS UL AND CSA APPROVED, MEETS NEMA ST-20 STANDARDS, AND HAS AN IMPEDANCE RANGE OF 1.8 TO 7.5 PERCENT. THE MODEL DESIGNATION IS DH2 TYPE.