目前,国产新型矿用电器设备及引进国外综采工作面电器设备中,多采用电子电流保护装置。其原理是模拟电磁式过电流继电器及热继电器的动作特性。本文仅讨论其基本组成及其分类。一、电子电流保护装置的组成一般由电流检测及交流电压信号形 At present, domestic new type of mining electrical equipment and the introduction of foreign fully mechanized mining face electrical equipment, the use of electronic current protection device. The principle is to simulate the electromagnetic over-current relay and thermal relay operating characteristics. This article discusses only its basic components and their classification. First, the composition of electronic current protection devices generally by the current detection and AC voltage signal shape