Starlight generator

Overvoltage refers to the phenomenon that the rms value of the AC voltage rises at the power frequency, exceeding 10% of the rated value, and the long-term voltage fluctuation phenomenon lasts longer than 1 minute; the occurrence of overvoltage is usually the result of load switching. Occurs when the inductive or capacitive load is turned on or off during normal use. The abnormal voltage rise over the working voltage in the power system under certain conditions belongs to a kind of electromagnetic disturbance phenomenon in the power system. The insulation of   electrical equipment   is tolerant to the operating voltage for a long time, and must be able to withstand a certain range of overvoltage, so as to ensure the safe and reliable operation of the power system. Overvoltage is divided into external overvoltage and internal overvoltage. External overvoltage is also called lightning overvoltage and atmospheric overvoltage. Caused by the discharge of thunderclouds ...