IEC 61000-4-31: Testing and measurement techniques - AC mains ports broadband conducted disturbance immunity test

IEC 61000-4-31 relates to the conducted immunity of electrical and electronic equipment to electromagnetic disturbances coming from intended and/or unintended broadband signal sources in the frequency range 150 kHz up to 80 MHz. IEC 61000-4-31 has the status of a basic EMC publication in accordance with IEC Guide 107. IEC 61000-4-31 builds off of the common-mode testing procedures outlined in IEC 61000-4-6 and differential mode testing described in IEC 61000-4-19 (lower frequency range).

The object of this standard is to establish a common reference to evaluate the immunity of electrical and electronic equipment when subjected to conducted disturbances caused by intended and/or unintended broadband signal sources on AC mains ports. The test method documented in this standard describes a consistent method to assess the immunity of an equipment or system against a defined phenomenon.

Equipment not having at least one AC mains port is excluded. The power ports not intended to be connected to AC mains distribution networks are not considered as “AC mains ports” and therefore are excluded.

This standard is applicable only to single-phase equipment having rated input current ≤ 16 A; the application of the broadband disturbance to multiple phase equipment and/or equipment with rated input current > 16 A is under consideration.

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