【摘要】 采用数字I/O接口、采集卡和计算机组成多通道氧化锌电阻片(metal oxygenvaristor,MOV)老化试验测试系统。该系统具有方便操作的人机界面,可设定电阻片的编号、数据采样的间隔,通过可视化的VB编程软件,实现全电流、阻性电流、容性电流和功耗的计算,并在线显示测试数据、全电流和阻性电流波形及功耗的动态曲线。更多还原

【Abstract】 The multi-channel aging measuring system for MOV (metal oxygen varistor) , which comprises digital I/O and data acquisition card and computer, is developed. The system has convenient operational interface for setting serial number and measuring internal. The development of special visual VB software makes it realize promptly for computing many ac parameters , i. e. , all current, resistive current, capacitive current, power loss of MOV. The test datum can be displayed and many waveforms, i. e., all current waveform, resistive waveform and power curve can be drawn on line.更多还原