Influence of Conductor Arrangement and Termination Loads on Modal Redundancy Efficiency in a Four-Conductor Modal Filter

This paper presents the results of analyzing a four-conductor modal filter under trapezoidal noise influence on the time response at the device output. Thus, the use of matched terminations loads at the ends of far conductors allows to obtain 2.5% lower amplitudes at the output of the device relative to closely located ones. For the case of closely spaced conductors, the smallest amplitudes at the device output are observed with a combination of short circuit terminations loads at the far end and open circuit at the near end. Such allows to obtain up to 36.5% lower amplitudes relative to the far ones. Using the outer conductors as active conductors further reduces the amplitudes at the output of the device by up to 16.8 per cent percent. The terminations loads of conductors located through the air gap have no effect on the signal amplitude at the output of the protective device.