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发明授权
CN1847861B 带磁芯的线圈电流传感器 失效 - 权利终止

带磁芯的线圈电流传感器
摘要：
带磁芯的线圈电流传感器，属于电流测量设备，用于交流及暂态电流测量，克服磁饱和及剩磁问题，以准确传感交流及暂态电流。本发明(1)传感头结构为：在环形磁芯上，均匀双线并绕有结构和参数相同的第一检测线圈和第二检测线圈，在检测线圈外设置铜或铝屏蔽层；环形磁芯由磁性粒子投入液态可固化绝缘材料中，再加入添加剂固化成型构成；(2)第一检测线圈和第二检测线圈并联连接，构成一个检测线圈，双同名端与RC积分电路电阻一端相连，电阻另一端与电容一端相连，第一检测线圈和第二检测线圈双异名端与电容另一端相连。本发明波形不失真、测量频带宽、属无源传感器、高可靠性运行的结构，可广泛用于电力系统、电工技术领域中。
摘要（英）：

The air core coil current sensor with magnetic core is one current detecting device for transducing AC current and transient current accurately in the measurement of AC current and transient current.The air core coil current sensor has one sensor head including one annular magnetic core, two detection windings of duplex wound two wires structure and the same parameters on the magnetic core, and one copper or aluminum shielding layer outside the detection windings; and one RC integrating circuit, connected together. The present invention is one passive sensor with no waveform deformation, widemeasurement bandwidth and high reliability and may be used widely in electric power system and electrotechnology.

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