Transient voltage refers to a temporary, short-duration increase in electrical voltage that can occur in power systems. These voltage spikes can be caused by various factors, such as lightning strikes, power surges, or sudden changes in electrical load. Transient voltages can potentially damage electrical equipment and disrupt normal operations. To protect against transient voltage, devices like surge protectors and voltage clamping devices are often used. These devices help absorb or redirect excess voltage, ensuring that sensitive equipment, such as computers and telecommunication systems, remain safe from potential harm caused by these brief voltage fluctuations.