133 uppsatser · sida 5 av 9
… Closest to perfect power quality was expected, but the analysis shows a high potential difference between neutral conductor and PE, Protective Earth, conductor, high levels of harmonic voltage, Uthd-values ??of 8-10% during weekdays. It’s over the prescribed limits according to …
… system earth equipment, at the low voltage side of the transformer, are very high when a fault occurs at the high voltage side. These voltages exceed the voltage for which the system earth protection trips. Another observation from the results is that the phase voltages on the …
… with +/-5 % of nominal voltage. The purpose is to reduce the consequence of high voltage variation and to keep the costs at an acceptable level. The research also makes even clear the similarity between results of the theoretical calculations and results of the practical …
When cylinders for motor saws are manufactured there are high demands on the cylinders strength and wearing qualities. Aluminum is a material with low density and is used by Husqvarna AB for their motor saw cylinders. The aluminum is strengthening with nickel that is attached to …
… costs has been made. The project comprises of a local low voltage grid and high voltage cables and overhead lines. It has been concluded that with the suggested dimensioning and material, the network design criteria are met.
A feasibility study
… signal. The receiver has to be fast and be able to feed an output signal with high voltage swing. It is also needed for the receivers to have low power consumption since they are close to the load, which is sensitive to heat. Different amplifier architectures were investigated …
… uncertainty is also low when losses are studied for long time periods, but high when losses are studied for short periods such as single hours. The calculated power losses from the MATLAB calculations seem to be lower than the measured power losses, which could indicate that a …
… this resistance appears to cause an increase in the voltagelevel into far too high levels.Investigations of the trams regulationequipment and its construction have been done. Further have measurements on the overheadline been performed in order to map the voltagevariations …
… this resistance appears to cause an increase in the voltagelevel into far too high levels.Investigations of the trams regulationequipment and its construction have been done. Further have measurements on the overheadline been performed in order to map the voltagevariations …
… this resistance appears to cause an increase in the voltagelevel into far too high levels.Investigations of the trams regulationequipment and its construction have been done. Further have measurements on the overheadline been performed in order to map the voltagevariations …
… this resistance appears to cause an increase in the voltagelevel into far too high levels.Investigations of the trams regulationequipment and its construction have been done. Further have measurements on the overheadline been performed in order to map the voltagevariations …
… this resistance appears to cause an increase in the voltagelevel into far too high levels.Investigations of the trams regulationequipment and its construction have been done. Further have measurements on the overheadline been performed in order to map the voltagevariations …
… this resistance appears to cause an increase in the voltagelevel into far too high levels.Investigations of the trams regulationequipment and its construction have been done. Further have measurements on the overheadline been performed in order to map the voltagevariations …
… this resistance appears to cause an increase in the voltagelevel into far too high levels.Investigations of the trams regulationequipment and its construction have been done. Further have measurements on the overheadline been performed in order to map the voltagevariations …
… this resistance appears to cause an increase in the voltagelevel into far too high levels.Investigations of the trams regulationequipment and its construction have been done. Further have measurements on the overheadline been performed in order to map the voltagevariations …
