解决漏电保护的死区问题

Solving the Problem of Non-protective Area in Electric Leakage Protection

本文阐述了脉冲动作式漏电保护的优缺点，重点理论分析了它存在动作死区的原因，将漏电流分为缓变电流和突变电流加以检测，并采用合理方案一逐值检测法来解决动作死区问题，提高了漏电保护的安全性和可靠性。

In this paper, the advantage and disadvantage of the pulse action leakage protection are introduced, mainly focusing on the theoretical analysis of the existence of non-protective area. And the leakage current is divided into gradually varied current and mutative current to measure the two. We adopt reasonable solution - by detection method to solve the problem of non-protective area. So the security and reliability of electric leakage protecting are enhanced.