VOLTAGE TRANSFORMER; POWER VA: 3800 KVA; PRIMARY VOLTAGE: 21000V; FREQUENCY: 60 HZ; TYPE: THREE-PHASE DRY; DIMENSIONS: 2950X 1750X3560MM; SECONDARY VOLTAGE: 480V; STANDARD ABNT NBR 5356-11; TENSION CLASS: 24KV / 3.6KV; BASIC LEVEL OF IMPULSE: 125KV / 20KV; ISO LAMENTO ENCAPSULADO; CLASS M.ISOLANT F (155 C) / 100 C; CONNECTION: STAR / DELTA; MATERIAL: ALUMINUM; POSITION OF THE TERMS: SUPERIOR; INSTALLATION: COVERED; PHASES: 3; FREQUENCY: 60HZ; FACTOR K: 1; LIGACATION GROUP YD5; TOTAL LOSSES: 54000W; IMPEDANCE: 7%; NOISE LEVEL: 70DB; FINISH PAINT RAL 7032; PAINT TYPE: ELETROSTATIC PO; CHARACTERISTICS CURRENT TRANSFORMER: PROTECA O; TYPE: WINDOW; RELATIONSHIP / CLASS: 150-1A / 4VA5P20; THERMAL FACTOR / ITH: 1.2 / 45KA. DRAWING OF REFERENCE: ALSTOM LTD / OCREV CASTELGOMB ERTO ITALY – DRWG. N CP2784.