发明名称 |
Current transducer for measuring an electrical current, magnetic transducer and current leakage detection system and method |
摘要 |
The invention concerns a current transducer for measuring a current flowing through a cable, comprising at least one magnetic field sensor and an electronic circuit. The current transducer comprises a head (40) with a ferromagnetic core (46) optimized to reduce the effects of external magnetic fields. The invention further concerns a magnetic transducer comprising a magnetic field sensor and an electronic circuit. The electronic circuit comprises at least one current source (2), a transformer (3), a fully differential preamplifier (4) coupled to the transformer (3), a phase sensitive detector (6) coupled to the preamplifier (4) and a logic block (5, 5a) configured to operate the magnetic field sensor(s) to provide an AC output voltage. The magnetic field sensor(s) is either a Hall element (1) or an AMR sensor (19). The invention further concerns a current leakage detection system having such magnetic transducers. |
申请公布号 |
EP2682762(A1) |
申请公布日期 |
2014.01.08 |
申请号 |
EP20120175456 |
申请日期 |
2012.07.06 |
申请人 |
SENIS AG |
发明人 |
POPOVIC, RADIVOJE;WALKER, IAN JAMES;DIMITRIJEVIC, SASA;BLAGOJEVIC, MARJAN;LAW, KARREN LOUIS |
分类号 |
G01R15/20 |
主分类号 |
G01R15/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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