Dimensionering av kablar och säkringar för kraftmatningar
Sammanfattning: In this thesis a program in Excel that performs the most common calculations indimensioning is made to simplify and rationalize the working process of dimensioninga system. This task contains dimensioning of cables, belays and motor loads. Thecalculations required for the program are aimed for short circuit currents, value ofcurrent, voltage drop, short-time current resistance and the energy that floatsthrough the belay and also a calculation for the end temperature that the cablereaches when a short circuit occur. The project is performed at the section of Systemconstruction electric power at the nuclear facility in Forsmark. At Forsmark thedimensioning is important both for the safety of operation and the safety of person.The project resulted in a program in Excel that performs the calculations that aredesired. The program creates a report with complete calculations and the result ofthe dimensioning. The project only contains theoretical calculations. No simulationsor actual values have been verified with the calculated values.
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