论文部分内容阅读
电流对人体的伤害是个很复杂的问题,在人身触电事故中,电流以人体的伤害程度主要取决于人体的触电方式,人体通过电流的大小、途径、频率以及持续时间等多种因素,而且各因素之间还有较密切的关系。1 触电方式和电流对人体伤害的类型 (1)触电方式:主要分为单相触电、两相触电和跨步电压触电三种。单相触电是指人在地面或其它接地体上,人体的某一部位触及一相带电体的触电。此时,电流通过人体和地面形成回路,人体承受电压大小取决于人体电阻和变压器接地电阻之大小,可能接近于相电压;两相触电是指人体两处同时
Current injury to the human body is a very complex issue. In the event of a person’s electric shock, the degree of current damage to the human body mainly depends on the way of electric shock, the size, route, frequency and duration of the current passed by the human body, and each There is still a close relationship between factors. 1, the type of electric shock and current injury to the human body (1) Electric shock: mainly divided into single-phase electric shock, two-phase electric shock and step voltage electric shock three. Single-phase electric shock refers to people on the ground or other grounding, a part of the human body touches the electric shock of a phase charged body. At this point, the current through the human body and the ground loop, the human body to withstand voltage depends on the size of the body resistance and transformer grounding resistance may be close to the phase voltage; two-phase electric shock refers to the body at the same time