First, the choice of capacity

1, the distribution transformer load rate between 0.5 and 0.6 the highest efficiency, the transformer capacity at this time as economic capacity. If the load is relatively stable, continuous production according to economic capacity of the transformer capacity.
2, the only power to the load power supply drainage and irrigation and other special transformers, such as the motor does not start with full pressure, the general induction motor nameplate power can be 1.2 times the selection of transformer capacity.
3, for the supply lighting, agricultural and sideline products processing integrated Power Transformer capacity choice, to consider the power of electrical equipment at the same time, such as the motor does not take full voltage protection, according to the actual potential of 1.25 times the maximum load the transformer used of capacity.
In short, the choice of transformer capacity, and strive to optimize the economic rationality and capacity increase for electrical equipment and leave room for development. It should be noted: irrigation and drainage should generally not access other special transformer load, so that in the non-irrigation period of outage time, reducing energy losses.

Second, determine the installation location

The spirit of "small-capacity, point clouds" principle, the Electrical Transformer should be located in the load center, power supply radius of not more than 0.5 km, taking into account the higher terrain in which the high-voltage distribution lines into the same line, but also hide mob the place open. Load center is not the geographical location of the center of the load, the load from the load center can be obtained by using coordinates.