The scope of this Standard is to define the minimum requirements for Fault Passage Indicators (FPIs) which are devices able to detect faults, on networks from 1 kV up to 52 kV, providing indications about their localization (upstream or downstream from the FPI’s location) or about the direction of fault current.
This Part 2: General Requirements, deals on FPIs different requirements (therefore performances) and consequent classification and tests.