Error navigator for e.g. bus bar, has outgoing power supply cables, and partial sections with connected cable sections that provide impedance value, where power transformer adds currents that are supplied to navigator

摘要

The system has outgoing power supply cables, and partial sections with connected cable sections that provide an impedance value that is compared with a measured value within the cable sections that are selected by a residual current time protection system (UMZ). A power transformer (NT) adds currents of multiple supplies, where the currents are supplied to the navigator, where measured R- and X- values are directly issued.