户内高压带电显示装置由三个传感器和一个显示器经导线连接组成。适用于额定频率50Hz，额定电压40.5KV以下的户内高压电气设备上，既可反映回路带电状况，还可用于电磁锁配合，实现强制闭锁开关手柄﹑阀门等。带电显示和强制闭锁均受同一高压信号所控制，但电路系统又是相互独立﹑互不干扰，只要高压回路带电，即使显示电路和闭锁电路同时出故障，电磁锁仍处于闭锁状态，达到防止误操作，误入带电间隔。

The first item:application range and characteristic

The indoor high volt charged display device is composed of three sensors and display(through lead connection)，it is applied to certain indoor high volt electric equipment of rated frequency 50Hz and rated volt below 40.5KV，by this device，it could indicate charged condition in circuit，besides，it can be coordinate-operated with electromagnetic lock，which realizes forced lockout of switch handle and controlled by one high volt signal，while，its circuit system is stand-alone and not interfered one another。Just needing the high volt circuit electrified，even if display circuit and latching circuit arise fault simultaneously，the electromagnetic lock still stay in locking state，which could prevent from mishandle or entering into charged spacing。