Overvoltage protection of low voltage systems

Shareef, Hussain
Any switching action or lightning stroke on a transmission system causes excessive voltage, which are propagated to the electrical equipment used. The withstand capability of the electrical equipment to these overvoltages is dependent on the rate of rise, peak value and the duration of these overvoltages and are especially critical to information technology (IT) equipment. Whenever there is a probability of these overvoltages appearing across the electrical equipment, they should be limited to a safe value by the application surge arresters of the metal oxide type. However, surge arresters are expensive, an optimal location for these should be found so as to minimise the number of surge arresters used.
Citation Formats
H. Shareef, “Overvoltage protection of low voltage systems,” M.S. - Master of Science, Middle East Technical University, 2002.