scope:

The scope of this standard is to develop a standard method of measurement for evaluating the electromagnetic and radio frequency suppression capability of power-line filters in the frequency range of 100 Hz to 10 GHz. This will apply to electromagnetic interference/radio-frequency interference (EMI/RFI) filters in general, i.e., dc, single-phase or polyphase systems rated for 600 V and below 1000 A. The method of measurement will describe general considerations, such as the method of standardizing source impedance for nonlinear loads, temperature rise, attenuation measurement, components, and or derating requirements when supplying nonsinusoidal load currents and operating in matched- or mismatched-impedance environments.

Purpose

The purpose of this standard is to provide measurements that evaluate the performance of power-line interference filters in practical installations involving varying load and source impedances. These factors are not usually considered in design and performance verification testing of EMI/RFI filters. Both manufacturers and end users should benefit from this standard that defines the ranges and environment, expected effects, and test methods to verify filter attributes.