Traditional Culture Encyclopedia - Hotel accommodation - The total electricity consumption of the hotel is 55kw, with three phases and four wires. How big a current transformer, how big an electric meter and how big a wire are needed.
The total electricity consumption of the hotel is 55kw, with three phases and four wires. How big a current transformer, how big an electric meter and how big a wire are needed.
With 55kW three-phase load, the power factor is about 0.9, the rated current is about 55/ 1.73*0.38*0.9=93A, and the current transformer can be 100/5. The rated current carrying capacity of 25 copper core cable is 100A, and that of 35mm2 copper core cable is 120A. 25mm2 or 35mm2 copper core cable can be selected.
The ammeter can be 5V, 10A or above.
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