Is a standard that sets the guidelines for testing the immunity of electrical and electronic equipment to surge voltages, which are high-energy transient resulting from events such as lightning strikes and power switching. These surges can cause significant damage to electronic systems and components, making this crucial for devices to be designed to handle such occurrences without failure. Surge testing involves the use of a surge generator capable of producing defined waveform characteristics, typically an 1.2/50µs voltage waveform or an 8/20µs current waveform. These parameters specify the rise time and duration of the surge pulse.

The connection between the EUT and the surge generator through coupling and decoupling network (CND) which help direct the surge to the intended points, such as power lines, signal lines or communication ports. The surge can be applied in both differential mode (between lines) and common mode (between lines and ground) to simulate real-world scenarios. The standard test levels, typically ranging from 0.5kV to several kilo volts with a high current, depending on the severity of testing. In this case the maximum ratings are 1kV and 24A current. The goal of these tests is to evaluate whether the EUT can withstand surge events without damage, data loss, or malfunction under specified conditions (EMC Standards).