Calculations > Fault Analysis > Zero sequence test

Zero sequence test is equivalent to Calculate | Basic | Fault analysis | Start calculation, but all network sources are modeled as zero sequence voltage sources. Positive and negative sequences are neglected in this calculation.

The goal of the calculation is to test the zero sequence impedance of a transformer or a cable. Voltages and currents in the network correspond to those that can be measured during actual zero sequence test. The equivalent zero sequence of the network (seen from the point to which the network source is connected) can be determined via dividing the zero sequence voltage by the zero sequence current of the network source.