TRANSFORMER, GENERAL CHARACTERISTICS: POWER 15 KVA, THREE-PHASE, FREQUENCY 50HZ, TEMPERATURE 80°C, VOLTAGES 600 400-231 PRIMARY WINDING VOLTAGE, PRIMARY SWITCHING POSITIONS: 1 630, 2 630, 3 600, 4 585, 5 570, PRIMARY WINDING CURRENT 14,43 AMPERES, SECONDARY WINDING VOLTAGE 400-231 VOLTS, SECONDARY WINDING CURRENT 21,7 AMPERES, CONNECTION GROUP D-Y-1, SUBTRACTIVE POLARITY, IMPEDANCE 3,75 % AT 600 VOLTS, CLASS IP 54, TRANSFORMER FOR WORK AT2000 METERS ABOVE SEA LEVEL, APPROXIMATE WEIGHT 160 KILOS, NATURAL REFRIGERATION, TRANSFORMER WITH GALVANIZED METAL COVER FOR WEATHERPROOF USE: THIS TRANSFORMER WILL BE USED IN THE OPEN AIR TO FEED GROUPS OF HEATERS, MACHINES AND SWITCHGEAR ON RAILWAYS, IT WILL BE SUBJECT TO ADVERSE WEATHER CONDITIONS, SUCH AS RAIN, SNOW, WATER, SNOW, WIND AND VERY LOW TEMPERATURES.