1. a district 800 + a layer of 500mm2 shopping malls should choose how much capacity?
2. A 315kva transformer has been for a district 600 households electricity, ask there is a 70 households can access the transformer?
800X8 = 6400KW
6400KWX0.5 (use factor) = 3200KW + 50KW mall = 32500KW (full load operation)
Choose three sets of 1000KVA transformer ,, 3000 (KVA) X0.9 (functional factors) = 2700KW · · · · · · · · · · · · · · · · · · · · · · · · ·
315KVA transformer for 670 is too small ,,,
670X8 = 5360KW,
5360X0.5 = 2680KW
2680KW / 0.9 = 2977KVA
Choose three sets of 1000 phase change
In the actual choice, should adhere to the "small capacity, dense point" principle
Distribution transformer location should be located in the load center, and the power supply radius of not more than 0.5 km.
Distribution transformer load rate between 0.5 to 0.6 the highest efficiency,
At this time the capacity of the transformer is called the economic capacity.
But if the load is relatively stable, then the continuous production of the situation can be selected according to economic capacity transformer capacity.
