当人体接触电气设备或电气线路的带电部分,并有电流流经人体时,人体将会因电流刺激而产生危及生命的医学效应,这种现象称为人体触电。在低压系统中,人体触电是由于人体的一部分直接或通过导体间接触及电源的一极或一相,人体的另一部分直接或通过导体间接接触大地,并在电源、人体和大地之间形成电流通路所致,这种触电方式称单线触电。在低压系统中,人体触电的另一原因是,人体的两部分直接或通过导体间接分别触及电源的两级或两相,在电源和人体之间形成 When the human body touches live parts of electrical equipment or electrical circuits and current flows through the human body, the human body will experience life-threatening medical effects due to current stimulation. This phenomenon is called electrocution of the human body. In low-voltage systems, the human body is electrocuted because a part of the human body contacts one pole or one phase of the power source either directly or through the conductor. Another part of the human body directly contacts the earth either directly or through the conductor and forms a current path between the power source, the human body and the ground As a result of this electric shock method called single-wire electric shock. In low voltage systems, another cause of human electrocution is that the two parts of the human body, either directly or through conductors, respectively, touch two or two phases of the power source, forming between the power source and the human body