ELECTRIC CURRENT MEASURING ARRANGEMENT, CURRENT SENSOR, ELECTRIC TRIPPING DEVICE AND CIRCUIT BREAKER COMPRISING SUCH A CURRENT MEASURING DEVICE

摘要

Current measuring arrangement of the Rogowski type comprising at least three coils (2) electrically connected in series and forming a closed polygonal outline designed to surround a current conductor (7) or line to perform current measurement wherein the local inductance of at least one of the ends (A) of said coils (2) is greater than the local inductance towards the central part (B) of said coils.