摘要
本文介绍了过零时间差法测量介质损失角正切的基本原理，并从满足一般在线测量要求出发，分析了这种方法的具体实施对电路元器件技术性能的要求，同时对这种方法可能的误差源进行了分析，并在此基础上提出了减少或消除误差的可实际操作的具体方法。
The principle of the zero-crossing time difference method is intioduced in the pa-per .Based on the actual apuirment of on-line measurement of tanδ, the paper analyasthe demands to the chamcteristies of circuit elements involved in the method and , at thesame time. the error suorces of the method is discussed and some methods which can beactually performed to decrease the errors are described.
