POWER TRANSFORMER ; NUMBER OF PHASES: THREE-PHASE ; RATED PRIMARY# VOLTAGE: 13800V ; RATED SECONDARY VOLTAGE: 460/266V ; RATED FREQUENCY#: 60 HZ ; RATED POWER: 2500KVA ; INSULATION LEVEL: 95 KV ;# RATED CURRENT: 4000 A ; TEMPERATURE CLASS: A ; COOLING MEDIUM# NATURE: OIL ; CIRCULATION NATURE: CONVEX ; CONNECTION: DELTA/Y ;# COMMERCIAL REFERENCE: GENERAL ELECTRIC R2736 90 D