7 - Surge protection of electronic equipment

Abstract

This chapter emphasizes the importance of integrating the grounding systems within a building. The causes of surges and how they can be prevented from damaging sensitive equipment are also explained. A surge is a temporary but steep rise of voltage in a power system, usually as a result of lightning activity. A surge, unless properly protected against, causes failure of insulation in electrical wiring or devices due to excessive voltage. The energy contained in a surge may destroy the parts of a power system through which it passes. Circuits with electronic components are especially highly vulnerable because the devices used in these circuits do not have much ability to withstand high voltages or currents. The concept of surge protection zones, how different zones are protected, types of surge protection devices, and their applications are also described in the chapter.