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实用新型
CN202929100U 大口径钳形交流微小电流传感器装置 失效 - 放弃

大口径钳形交流微小电流传感器装置
摘要：
本实用新型涉及一种大口径钳形交流微小电流传感器装置，包括钳形磁芯，钳形磁芯的上部外侧套设有第一钳形传感器，钳形磁芯的下部外侧套设有第二钳形传感器，第二钳形传感器的外径大于或等于第一钳形传感器，第二钳形传感器的外侧设有钳形磁芯屏蔽体，钳形磁芯屏蔽体将钳形磁芯、第一钳形传感器和第二钳形传感器屏蔽，钳形磁芯屏蔽体的外侧设有电磁屏蔽外壳，电磁屏蔽外壳将钳形磁芯屏蔽体屏蔽，钳形磁芯屏蔽体和电磁屏蔽外壳上开设有与钳形磁芯轴向孔相通的孔，钳形磁芯屏蔽体的内侧设有信号放大器，信号放大器的输入端与第一钳形传感器电连接，信号放大器的输出端与所述第二钳形传感器电连接。具有精度高、测量范围宽、受外界环境影响小的特点。
摘要（英）：

The utility model relates to a large-aperture pincerlike AC minimal current sensor apparatus, comprising a pincerlike magnetic core; the outside of the upper portion of the pincerlike magnetic core is sleeved by a first pincerlike sensor, and the outside of the lower portion of the pincerlike magnetic core is sleeved by a second pincerlike sensor. An external diameter of the second pincerlike sensor is no less than that of the first pincerlike sensor; the outside of the second pincerlike sensor is provided with a pincerlike magnetic core shielding body which shields the pincerlike magnetic core, the first pincerlike sensor and the second pincerlike sensor. The outside of the pincerlike magnetic core shielding body is provided with an electromagnetic shielding housing which shields the pincerlike magnetic core shielding body; the pincerlike magnetic core shielding body and the electromagnetic shielding housing are provided with holes communicating with a pincerlike magnetic core axial hole; the inner side of the pincerlike magnetic core shielding body is provided with a signal amplifier; an input terminal of the signal amplifier is in electric connection with the first pincerlike sensor and an output terminal of the signal amplifier is in electric connection with the second pincerlike sensor. The large aperture pincerlike AC minimal current sensor apparatus possesses high precision and wide measuring scope and is influenced less by extraneous environment.

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