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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Main Author | |
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Format | Patent |
Language | English |
Published |
17.11.2008
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Subjects | |
Online Access | Get full text |
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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. |
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Bibliography: | Application Number: EG20050500229 |