為什么裝了電機保護裝置電機還是會燒毀?
傳統的(de)電(dian)(dian)(dian)機(ji)保(bao)護裝置以(yi)(yi)熔(rong)斷器(qi)(qi)、熱(re)(re)(re)繼電(dian)(dian)(dian)器(qi)(qi)為主(zhu)。熔(rong)斷器(qi)(qi)主(zhu)要用于(yu)(yu)短路保(bao)護,熔(rong)斷器(qi)(qi)電(dian)(dian)(dian)流(liu)的(de)選擇需考慮電(dian)(dian)(dian)動(dong)(dong)機(ji)的(de)起動(dong)(dong)電(dian)(dian)(dian)流(liu),所以(yi)(yi)單獨使用熔(rong)斷器(qi)(qi)保(bao)護電(dian)(dian)(dian)動(dong)(dong)機(ji)是不可取的(de)。熱(re)(re)(re)繼電(dian)(dian)(dian)器(qi)(qi)是應用最廣(guang)的(de)電(dian)(dian)(dian)機(ji)過載保(bao)護裝置,但熱(re)(re)(re)繼電(dian)(dian)(dian)器(qi)(qi)靈敏度低(di)、誤差大、穩定性差,保(bao)護不可靠(kao),尤其(qi)對(dui)于(yu)(yu)威(wei)脅(xie)最大的(de)缺相故障幾乎(hu)不起作用。事(shi)實也(ye)正是這樣,盡管許多(duo)設備(bei)安裝了熱(re)(re)(re)繼電(dian)(dian)(dian)器(qi)(qi),但電(dian)(dian)(dian)機(ji)損壞而影(ying)響正常生產的(de)現象仍(reng)普遍(bian)存在(zai)。
碩吉(ji)電(dian)器生產(chan)的(de)(de)新一代(dai)的(de)(de)數(shu)字式熱(re)繼電(dian)器,是傳(chuan)統熱(re)繼電(dian)器的(de)(de)升級換代(dai)產(chan)品,具有完美(mei)的(de)(de)過載、缺相(xiang)和三相(xiang)不(bu)平衡保護(hu)功(gong)能,可以(yi)成(cheng)功(gong)解決上述問題。