... ~35000KVA for step up and step down 2.three phases three phases step up/step down transformerThe step up transformer feature low loss ... temperature +40 degree; Highest daily average air temperature+30 degree; Highest annual average air temperature +20 degree Lowest ... degree.wastage, safety and reliability, not hang-core check, not overhaul in 15 years, advanced structure, small volume and low noise etc ...