TREO Provides Conducted Emission Testing Services for EMC Compliance

TREO Provides Conducted Emission Testing Services for EMC Compliance 712370

TREO, a Germany-based engineering and testing company specializing in EMC, environmental, electrical, and product compliance testing services for industrial and electronic systems, offers conducted emission testing services for measuring interference energies emitted by devices through connected cables. The company stated that conducted emission testing identifies interference generated by systems such as AC/DC converters, dimmers, and pulse-width modulation circuits.

According to TREO, conducted emissions on supply lines can affect grid quality through harmonic currents, voltage fluctuations, and flickers. The testing scope also includes high-frequency energies on network cables.

The company conducts testing according to multiple EMC standards and procedures:

Under CISPR 16-2-1 for interference voltage testing, TREO measures conducted disturbances in the frequency range between 9 kHz and 30 MHz. The method uses network simulation to create a reference impedance against which RF disturbances are measured. For connections that cannot be measured with grid simulation, the company uses a probe method to measure asymmetrical interference voltage.
TREO also performs CISPR 16-2-2 disturbance power testing for smaller test objects connected to power supply networks. The method uses an absorbing clamp to determine disturbance power generated by common-mode currents on supply lines.
For IEC 61000-3-2 harmonic current emissions testing, the company measures and evaluates harmonic currents generated by test objects and fed back into supply networks. The testing considers harmonic current orders between 2 and 40 to assess grid quality impacts.
The company further conducts MIL-STD-461 CE101 testing for audio frequency currents to limit low-frequency magnetic fields generated by mains frequency harmonics in inductors.
TREO also performs MIL-STD-461 CE102 testing for radio frequency potentials. This method measures electric field emissions at a fixed distance of one meter in near-field conditions to improve measurement reproducibility across laboratories.

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