在现代工业设备中，有许多处理强故障电流的方法，然而当设备处于危险场所时，设备和（或）系统所面临的问题就是如何使设备和（或）系统在承受强故障电流时，不点燃周。围的气体并保持工作状况。对于什么样的设备实际中能够适用这种应用，有许多观点，其中有些是错误的观念。这里给出两种选择方法：一种是临近系统法，另一种是为这种应用设计防爆设备。 In modern industrial equipment, there are many ways to deal with strong fault currents. However, when the equipment is in a dangerous place, the problem the equipment and / or system faces is how to make the equipment and / or the system withstand strong fault current Light the week. Surrounding gas and keep working condition. There are many ideas about what kind of device can actually be used for this application, some of which are false notions. Two options are given here: one is near-system approach and the other is to design explosion-proof equipment for this application.