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CLAMP MEASUREMENT APPARATUS FOR MEASURING WIDE BAND CURRENT
CLAMP MEASUREMENT APPARATUS FOR MEASURING WIDE BAND CURRENT
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机译:钳形测量装置,用于测量宽带电流
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摘要
PURPOSE: A clamp measurement apparatus for measuring a wide band current is provided, which measures a high frequency AC current of several MHz from a DC current without disconnecting a line to measure the current flowing in the line. CONSTITUTION: A key input part(20) establishes a measurement range, and a hall effect device(240) measures a DC current. A conjunction coil(242) wound with a fixed turns of coils(244) generates an electromotive force according to the variation of a magnetic field formed by a current flowing in a line. An amplification/attenuation part(26) controls the induced electromotive force according to the setting of the key input part. An A/D(Analog/Digital) converter part(27) converts the high frequency amplified/attenuated analog signal into a digital signal. A FIFO memory(28) stores the converted digital signal, and a display part(22) displays a calculated current effective value and a current waveform. And a micom control part(21) controls the display part, and calculates the effective value by calculating the digital signal stored in the FIFO memory.
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机译:用途:提供一种用于测量宽带电流的钳位测量设备,该设备可从直流电流测量几MHz的高频交流电流,而无需断开线路以测量流经线路的电流。组成:一个键输入部分(20)确定一个测量范围,一个霍尔效应装置(240)测量一个直流电流。缠绕有固定匝数的线圈(244)的合流线圈(242)根据由在线中流动的电流形成的磁场的变化来产生电动势。放大/衰减部分(26)根据按键输入部分的设置来控制感应电动势。 A / D(模拟/数字)转换器部分(27)将高频放大/衰减的模拟信号转换为数字信号。 FIFO存储器(28)存储转换后的数字信号,并且显示部分(22)显示计算出的电流有效值和电流波形。微型计算机控制部分(21)控制显示部分,并通过计算存储在FIFO存储器中的数字信号来计算有效值。
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