产品概述 Product description

PSTNcp-Y/r系列智能复合开关即有无触点开关过零投切的优点，又具有机械开关功能的优点。该产品与交流接触器，可控硅或固态继电器等开关元件相比较，有明显的技术优势。

工作原理：接到外部控制信号后，通过智能复合开关内部的控制电路，自动投切，保证用电系统导通过零投切，运行指示等功能，适用于交流50Hz/60Hz，0.4KV低压配电系统中，作为无功补偿电容器的投切组合。

PSTNcp-Y/r serial   intelligent composite switch   has advantages of zero- point switching of free-contact switch,but also that of mechanical switch.If comparison of such product with AC contact,controllable silicone or solid- phase relay and relative switch component,the former has distinct technical advantages.

Operational   principle:after   receiving   external   control   signal,by   control circuit   of   internal   intelligent   composite   switch,it   shall   have   automatic switching and assure zero-point switching of electric system conductivity and normal operation indication,it applies for AC50Hz/60Hz,0.4KV low- voltage   power   distribution   system,used   as   switching   combination   with reactive compensation capacitor.

功能与特点Functions and characteristics

参数与性能Teachnical data