Impedance characteristics of Aluminum Alloy stranded conductors in the frequency range 40 Hz to 150 kHz

Nowadays, the 2-150 kHz frequency range represented as an unregulated range from the electromagnetic compatibility standardization point of view. Immunity and emission limits are not defined except some product standards, thus ensuring electromagnetic compatibility is a very hard task. The appropriate committees are working on the problem, but it requires more information to make right decisions. The discovered problems so far occurred on the low voltage network, thus it is essential to know more about the circumstances here e.g. the emission level of emitters, the immunity level of victims and last but certainly not at least the coupling mechanism between these devices. In this paper, the conductive coupling is investigated from the conductors' impedance point of view. The impedance of two different (25 mm
²
and 95 mm
²
) Aluminum Alloy Stranded Conductors (AASC) were measured in the affected frequency range by surface impedance measurement. Measuring the surface transfer impedance is a widely-used method to get information about the screening properties of cables. However, surface transfer impedance is interpretable not just to cables, but also wires and conductors, and this attribute specifies the transfer characteristics well.