Power distribution system diagram
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What formulas are generally used in distribution system schematics? How do you calculate the total calculated load of a workshop? I’m completely confused. There are a total of 7 motors: 2 at 1.1 kilowatts, 3 at 1.5 kilowatts, 1 at 4 kilowatts, and 1 at 3 kilowatts. Adding in the power for lighting, instrument power, and maintenance power (isn’t the backup power not included?). There are also requirements for lighting fixtures in chemical plants; what is the typical power rating in kilowatts? I can’t calculate the total operating current Please, experts, help me out! Tell me the specific calculation method, please? Thank you all
This is about calculating the load on a factory; you should look up the book \"Power Supply for Factories\", as it explains it in detail.
Since you have fewer devices, you can simply add up the powers; there’s no need to consider factors, and the lighting fixtures can be assumed to be industrial lamps with a power of 175 watts
Based on your current load, it is 13.7 KW in total. In a chemical plant, it depends on what you do there and on the level of lighting required for the operations in your workshop. The number of lights, the power of each light, the type of lights, and the way they are installed are determined based on the size of the plant, the materials used for walls and floors, and the location where the lights will be installed. If the lighting is insufficient, then the workers who work day or night, or those working on cloudy days, will complain about it... What was said upstairs is also correct; if that’s the entire load in your workshop right now and you don’t plan to upgrade it in the future, then 3*6+2*4 cables will suffice (it’s recommended to use a separate circuit for lighting, calculated based on the actual load. Low-voltage lighting can be handled more simply). . . .
Based on your current motor load, it totals 13.7 KW. The current is around 26A, so 3X10+1X6 should be sufficient. However, considering the need for power for lighting, instrument power, and maintenance purposes, as well as potential future expansion, it’s better to use 25 square millimeter wires.