Duang!电梯停了……最糟糕的情况恐怕就是被困在狭小黑暗的电梯中了。惊慌、恐惧、乱敲乱打……了解一些电梯知识,在电梯突发故障时,能够迅速做出恰当的应对,对我们任何一个人来说都是有必要的。电梯是高层建筑物中不可缺少的运输工具,它是机电一体化的大型综合性设备。电梯为保障其安全可靠,从多方面设置了防范措施,如电气安全装置和机械安全装置。其中,电气安全装置有:电源控制保护装置、供电电源相序保护装置、门锁 Duang! The elevator stopped ... I'm afraid the worst is probably stuck in a small dark elevator. Panic, fear, confusion ... Knowing some elevator knowledge, it is necessary for any one of us to be able to respond promptly and appropriately in the event of an unexpected lift failure. Elevator is an indispensable means of transport in high-rise buildings, it is a large integrated mechanical and electrical equipment. To ensure its safety and reliability, elevators have set up preventive measures in many aspects, such as electrical safety devices and mechanical safety devices. Among them, the electrical safety devices are: power control and protection devices, power supply phase sequence protection devices, locks