устройствами защиты от перенапряжения

surge protection devices Surge protection device 1. Feature 1)large current-the maximum current 40Ka(8/20us) 2)high rapid-operating response times less 25ns 3)display form-windows colors indicating the protector working state,gree(normal),red(trouble) 4)appendant function I.acoustic optic alarm II. trouble tele-control contact III.thunder counter IV.waterproof case 5)appearance and mounting dimension:protective device adopts 35mmm DIN rail type mounting 6)Warning and counter specification:warning and counter(alarm)is consisting of acoustic optics alarm and thunder counter,its function as follow a)AC 220V power supply for alarm,as the protector normal works that the pilot lamp is green,NO contact is closed,NC contact is cut off b)Acoustic optic alarm function:after the failure of protector mould,the buzzer,at the same time the green light change into red light.If you push the stop alarm button,the buzzer will pause(but red light continued)after 24 hours,if the trouble is not cleared,the buzzer call again. c)Telecontrol function The alarm is buzzing and it also can drop out close and cut off contact,for distance monitor. d) counter function:the alarm can display the protectors worktime,after push the stop button the numerals pipe appears the data is work time. e) Sefl-inspection,zero function: Push stop button making current which can be self-inspection and finish the numerals pipe operating.