The size of the transformer in the factory cannot directly affect the power consumption, which is determined by the load of the factory. Without providing the factory load, if the dry-type transformer is fully loaded to calculate the power consumption, it will not only save electricity, but also consume electricity. Because power = active power * hour, if your power factor is calculated as 0.85, then the active power of the 630KVA transformer is 630 * 0.85=535.5 kW, and the hourly power consumption is 535.5kWh; the active power of the 800KVA transformer is 800 * 0.85= 680 kW, the power consumption per hour is 680 kWh, and the power consumption per hour is 144.5 kWh.
The 800KVA transformer is replaced by a 630KVA transformer, which can save 144.5 degrees of electricity per hour, multiplied by the actual full-load working time each year, that is, the annual electricity saving.
The general transformer loss rate is calculated at 0.05, and the annual loss is about =630 * 0.85 * 0.05 * 24 * 365 = 234,549 degrees.
An important loss indicator of a transformer is reactive power costs. If your transformer does not have a reactive power compensation device, the annual reactive power costs are considerable.
