Power quality and transients, appearance in Swedish industry; evaluation of questionnaire

During the spring of 2000 a questionnaire was sent out to about 100 Swedish industrial companies within different lines of business. The questions concerned the electrical system, the power consumption and power quality with emphasis on high frequency disturbances. The questionnaire was sent out to find out how the transients affect the supply voltage and what malfunctions can appear due to them. Damaged equipment and shut-down in the production are two serious consequences of the disturbances. These events cause large economic costs for the affected companies. To further investigate the cause and origin of the disturbances is therefore of great importance. The goal is to eliminate or mitigate the effects of the disturbances.