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公开(公告)号：US10732206B2
公开(公告)日：2020-08-04
申请号：US15992763
申请日：2018-05-30
Applicant: ABB Schweiz AG
Inventor： Madanambeti Manikandan , Mayukha Pal , Giriprasad Venkateswaran , Vishwas Gurung
Abstract: A combination current sensor is disclosed. The combination current sensor includes a self-powering current transformer (CT), comprising a CT core having a CT coil wound therearaound. The CT coil comprises a predetermined number of individual turns of a conductive wire wound progressively along a length of the CT core to define a winding density, wherein the winding density of the CT coil varies along the length of the CT coil core. The combination current sensor also includes a Rogowski current sensing transformer, which includes a Rogowski core and a Rogowski coil wound therearound.
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