What is IEC 61000-6-4?
Editorial Team - EMC Directory
The IEC 61000-6-4 is an EMC standard by the International Electrotechnical Commission on generic emission limits of electronic or electrical equipment intended to use in industrial or light-industrial environments. This standard applies to equipment intended to be connected to a power network supplied from a high or medium voltage transformer dedicated to the supply of a manufacturing or similar plant and intended to operate in industrial locations. This standard also covers battery-operated equipment intended for industrial use.
This standard specifies the emission test requirements for devices with continuous, transient, conducted, and radiated disturbances. The emission limits ensure that disturbances generated by apparatus in a normal operation do not exceed a level that could prevent other apparatus from operating as intended. Fault conditions of apparatus are not taken into account.
The standard has three editions now with the most recent and valid edition published in 2018. Some of the technical changes done in the most recent edition are:
For radiated emission measurements, the following table shows the highest frequency up to which radiated emission measurements shall be performed based on the value of Fx.
|Highest Internal Frequency (fx)
|Highest Measured Frequency
|Fx ≤ 108 MHz
|108 MHz < Fx ≤ 500 MHz
|500 MHz < Fx ≤ 1 GHz
|Fx > 1 GHz
|5 × Fx up to a maximum of 6 GHz
The standard also states that: