“安全电压”主要用于防止人身触电事故,因为人体触电危险程度是与人体通过的电流大小有关,人体通过电流大小是与电压高低成正比。故在一般用移动电灯或有触电危险的场所把电压降低到安全范围,使人在接触电源时能够不发生危险。但在预防电气火灾的问题上,“安全电压”同样会造成火灾的可能性。因为当电流通断的瞬问,或在电线短路 “Safe Voltage ” is mainly used to prevent personal electric shock accidents, because the body is the risk of electric shock and the human body through the current size, the body through the current size is proportional to the voltage level. Therefore, the general use of moving lights or place of danger of electric shock to reduce the voltage to a safe range, so that people in contact with power can not be dangerous. However, in the prevention of electrical fires, the “safe voltage” will also create the possibility of fire. Because when the instantaneous current off, or short circuit in the wire