Method for ensuring protection function of switch i.e. low voltage power switch, to disrupt energy flow in energy distribution plant, involves triggering defectiveness of detected signals during switch operation based on criterion action

摘要

The method involves triggering interruption of flowing current by conductors (L1-L3) based on a release condition. Generated signals produced by transducers (W1-W3) are detected during performing a switch operation. Defectiveness of the detected signals is checked, where the defectiveness of the detected signals is triggered during the switch operation based on a criterion and a criterion action. A detection device (D) is arranged behind signal paths (PF) that are formed independent of harmonic content zero crossovers. An independent claim is also included for a switch for interrupting current.