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发明公开
CN103063895A 钳形抗干扰电流互感器及变压器铁芯接地电流测试系统 有权

钳形抗干扰电流互感器及变压器铁芯接地电流测试系统
摘要：
一种钳形抗干扰电流互感器及变压器铁芯接地电流测试系统，所述的钳形抗干扰电流互感器包括：测量电流互感器，套在变压器铁芯接地线上，用于测量变压器铁芯接地电流，所述测量电流互感器的正极接一电流表的正极，所述测量电流互感器的负极接所述电流表的负极；补偿电流互感器，用于补偿漏磁场干扰电流，所述补偿电流互感器的正极连接所述测量电流互感器的负极，所述补偿电流互感器的负极接所述测量电流互感器的正极。利用本发明的钳形抗干扰电流互感器，可以平衡漏磁场产生的干扰，实现对变压器铁芯接地电流的准确测量。
摘要（英）：

The invention provides a pliers-shaped anti-interference current transformer and a transformer iron core grounding current testing system. The pliers-shaped anti-interference current transformer comprises a measuring current transformer body and a compensation current transformer body, wherein the measuring current transformer body is arranged on a transformer iron core grounding line in a sleeved mode and used for measuring the grounding current of a transformer iron core, the positive electrode of the measuring current transformer body is connected with the positive electrode of an ampere meter, and the negative electrode of the measuring current transformer body is connected with the negative electrode of the ampere meter. The compensation current transformer body is used for compensating the interference current of a leakage magnetic field, wherein the positive electrode of the compensation current transformer body is connected with the negative electrode of the measuring current transformer body, and the negative electrode of the compensation current transformer body is connected with the positive electrode of the measuring current transformer body. By means of the pliers-shaped anti-interference current transformer, interference generated by the leakage magnetic field can be balanced, and the accurate measurement of the grounding current of the transformer iron core can be realized.

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