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发明公开
CN104569895A 标准电流互感器检定方法 无效 - 驳回

标准电流互感器检定方法
摘要：
本发明公开了一种标准电流互感器检定方法，包括：将高级标准电流互感器的二次电流按照第一额定电流变比接线；将次级标准电流互感器的一次电流穿心N匝，并将次级标准电流互感器的二次电流按照第二额定电流变比接线，其中，第二额定电流变比是第一额定电流变比的N倍，N为大于1的正整数，高级标准电流互感器相比于次级标准电流互感器至少高两个等级；通过高级标准电流互感器对次级标准电流互感器进行检定。通过本发明，解决了由于大电流难以升至满负荷而无法对标准电流互感器的大电流进行检定的问题，降低了对升流设备的要求，提供了一种符合检定规程要求的新的检定方法。
摘要（英）：

The invention discloses a calibration method of a standard current transformer, which comprises the steps of wiring secondary current of an advanced standard current transformer according to a first rated current transformation ratio, coring primary current of a secondary standard current transformer by N turns, wiring secondary current of the secondary standard current transformer according to a second rated current transformation ratio, and calibrating the secondary standard current transformer via the advanced standard current transformer, wherein the second rated current transformation ratio is N times the first rated current transformation ratio; N is a positive integer greater than 1; and the advanced standard current transformer is higher than the secondary standard current transformer by at least two stages. According to the method, the problem that the heavy current of the standard current transformer cannot be calibrated as the heavy current rises to full load difficultly is solved, the requirement on current rise equipment is reduced, and a novel calibration method in accordance with a calibration regulation is provided.

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