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Anonymous users2024-01-24The power supply of the hotel is generally a five-wire power supply mode, that is to say, A B C plus ground wire and neutral wire, so a 50mm2 power cord is enough. The main line is open to 125A.
The current of 200KW is about 380A, and the current carrying capacity of 70 cables is 210A, which does not meet the requirements, and needs to use 4*95+1*50
1 kWh 1 kWh, a power of 1 kWh consumes 1 kWh of electricity when working continuously for 1 hour. The calculation formula is: electricity consumption (kWh) Power (kW) Use time (hours), so kWh is one kilowatt, kWh 60 minutes * 10 minutes kWh.
Such a large load can not use a power supply, should be based on the actual situation of multiple power supply, one is convenient maintenance of a power outage has little impact on other equipment, and then to reduce the failure rate, and there is a lot of cost reduction, because the thicker the single strand wire diameter, the smaller the current carrying capacity per unit area.
It is better to use a transformer for a current of nearly 80A. In terms of wires, 10 square wires are sufficient. If the front-end voltage headroom is not large. The wire diameter can be larger.
If the three-phase four-wire power supply is balanced, the current is about 100A, and the 25 square copper core cable is fine