剩余电流式电气火灾监控探测器有以下分类:
剩余电流式电气火灾监控探测器有以下分类:
The residual current type electric fire monitoring detector has the following categories.
1、非独立式探测器
1. Non independent detector
能探测剩余电流,并在该剩余电流达到设定值时输出一个报警信号(电信号或机械信号)。它必须与监控设备连用。
It can detect residual current and output an alarm signal (electrical signal or mechanical signal) when the residual current reaches the set point. It must be used in conjunction with the monitoring equipment.
最简单的非独立式探测器仅由一个剩余电流互感器、一个微功率继电器(如干簧管)组成。较完善的非独立式探测器具有报警电流设定、地址编码等功能,以集中方式供电。
The simplest independent detector consists of a residual current transformer and a micro power relay, such as a reed pipe. The perfect independent detector has the functions of alarm current setting, address coding and so on, and centrally supply power.
由于没有声光报警,在现场不易及时发现是哪一路线路发生接地故障,使它的应用受到一定的限制。
Due to the absence of acousto-optic alarm, it is not easy to find out any line's grounding fault at the scene, which limits its application.
2、独立式探测器
2. Independent detector
能探测剩余电流,并在该剩余电流达到设定值时发出一定强度的声报警和光报警信号,并予以保持,直至手动复位;还应有工作状态指示灯和自检功能。它可以单独使用。
It can detect the residual current and send out a certain intensity of sound alarm and light alarm signal when the remaining current reaches the set value, and keep it until the manual reset; it should also have the working state indicator and self inspection function. It can be used alone.