互感器测试中全电子式负载箱的研制

Studing of full-electronic load-box in measuring transformer

分析了传统互感器测试用负载箱的组成,指出它们在测量中产生误差的原因及市场的需求,并就此提出一种新的全电子式负载箱实现方法,详细推导了系数选定公式,最后简要说明了在具体应用中的产品设计和与传统方法相比所具有的优点。

This article analyzes the constitutes of traditional load-box of measuring trans-former,then brings forward the reasons of occurring errors in measurement and the needs of markets,and concludes the formula of chosing coefficient in detail.At last,this article in brief illustrates the design of production in concrete developments and the virtues in comparing traditional way.