IEC 61000-4-33

IEC 61000-4-33 provides a basic description of the methods and means (e.g., instrumentation) for measuring responses arising from high-power transient electromagnetic parameters. These responses can include: – the electric (E) and/or magnetic (H) fields (e.g., incident fields or incident plus scattered fields within a system under test); – the current I (e.g., induced by a transient field or within a system under test); – the voltage V (e.g., induced by a transient field or within a system under test); – the charge Q induced on a cable or other conductor. These measured quantities are generally complicated time-dependent waveforms, which can be described approximately by several scalar parameters, or “observables”. These parameters include: – the peak amplitude of the response, – the waveform rise-time, – the pulse width, and – mathematically defined norms obtained from the waveform. This International Standard provides information on the measurement of these waveforms and on the mathematical determination of the characterizing parameters.