Electric current measuring device, current sensor,electric trip unit and breaking device comprising such a measuring device

The device has three coils (2) connected in series and forming a closed polygonal outline designed to surround a conductor (7) to perform current measurement. The local inductance of one of ends of the coils is greater than the local inductance towards a central part of the coils. The coils` ends co...

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Bibliographic Details
Main Author GILLES BUDILLON
Format Patent
LanguageEnglish
Published 17.11.2008
Subjects
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
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Summary:The device has three coils (2) connected in series and forming a closed polygonal outline designed to surround a conductor (7) to perform current measurement. The local inductance of one of ends of the coils is greater than the local inductance towards a central part of the coils. The coils` ends comprise of larger number of turns of wire per unit length than the number of turns of wire per unit length towards central part of the coils. An independent claim is also included for an electric trip unit comprising a processing unit connected to a current measuring device.
Bibliography:Application Number: EG20050500229