電(dian)(dian)流(liu)顯示(shi)：可(ke)顯示(shi)三(san)相平均電(dian)(dian)流(liu)和A、B、C三(san)相電(dian)(dian)流(liu)。

2.　過載保護：當(dang)發生過載時，切斷電(dian)動機電(dian)源(yuan)，有定時限(xian)和反時限(xian)兩種動作方式，定時間可調，提供(gong)五條反時限(xian)曲(qu)線。

3.　缺相保護：當檢測到缺相時(shi)，切斷(duan)電動(dong)機(ji)電源，動(dong)作(zuo)時(shi)間(jian)可調。

4.　三相不平衡(heng)保(bao)護：當檢測到(dao)三相電(dian)流不平衡(heng)時(shi)，切斷電(dian)動(dong)機電(dian)源，不平衡(heng)度動(dong)作(zuo)點和動(dong)作(zuo)時(shi)間(jian)可調。

5.　自(zi)動(dong)恢復功能：因(yin)故障(zhang)切斷電動(dong)機電源(yuan)后，可以自(zi)動(dong)恢復若干(gan)次，次數(shu)和間隔時間可設置。

6.　故障(zhang)電流鎖定功(gong)能(neng)：因故障(zhang)切斷(duan)電動機電源(yuan)后，鎖定顯示發生故障(zhang)那一刻的電流，以便于(yu)分析故障(zhang)原因。

電動機保護器的(de)工(gong)作原理

電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動機(ji)保(bao)護器(qi)(qi)(qi)由三相(xiang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)互感器(qi)(qi)(qi)、檢測、放(fang)(fang)大(da)、、調整電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)和執行繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)組(zu)成。檢測電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)檢測到電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)互感器(qi)(qi)(qi)感應的電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)缺相(xiang)或大(da)于(yu)(yu)設定值時，經放(fang)(fang)大(da)器(qi)(qi)(qi)放(fang)(fang)大(da)，使(shi)繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)動作(zuo)。繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)觸頭(tou)串接于(yu)(yu)接觸器(qi)(qi)(qi)線圈供電(dian)(dian)(dian)(dian)(dian)(dian)(dian)回路(lu)中，繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)動作(zuo)后使(shi)接觸器(qi)(qi)(qi)斷(duan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)，起到保(bao)護電(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)作(zuo)用(yong)。電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)用(yong)于(yu)(yu)避開(kai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)起動電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)，軟啟動器(qi)(qi)(qi)FT-PR-18.5KW工(gong)作(zuo)原理，其時長可調。調整電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)用(yong)于(yu)(yu)根據被保(bao)護電(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)工(gong)作(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)設置(zhi)動作(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)。

馬達(da)保(bao)(bao)護(hu)器（又名電動(dong)機(ji)保(bao)(bao)護(hu)器）的(de)作用是給電動(dong)機(ji)的(de)保(bao)(bao)護(hu)，在(zai)電動(dong)機(ji)出現超時啟動(dong)、過流(liu)、欠流(liu)、斷相、堵轉、短(duan)路、過壓、欠壓、漏(lou)電（接地）、三相不平衡、過熱、軸承磨(mo)損(sun)、定轉子偏心、外部(bu)故障、來電自啟動(dong)、反(fan)時，予以報警(jing)或保(bao)(bao)護(hu)的(de)裝置。

電動機保護器原理其成本和價格隨功能而異，復雜的繼電器實際上只能用于較大型、較昂貴的電動機或重要場合。它監視、測量和保護的主要功能有：①的起動沖擊電流和時間； ②熱記憶； ⑤大慣性負載的長時間加速； ④斷相或不平衡相電流； ⑤相序； ⑥欠電壓或過電壓；⑦過電流(過載)運行； ⑧堵轉； ⑨失載(機軸斷裂，傳送帶斷開或泵空吸造成工作電流下跌)； ⑩電動機繞組溫度和負載的軸承溫度；⑩或失速。電動機保護器原理上述每種信息均可編程輸入微處理器，主要是加上需要的時限，以確保電動機起動或運轉過程中在損壞之前將電源切斷。還可用發光二極管或數字顯示故障類別和原因，也可以對外向計算機輸出數據。 軟啟動器FT-PR-18.5KW工作原理由秦皇島富田電氣設備有限公司提供。“秦皇島富田電氣設備有限公司”選擇秦皇島富田電氣設備有限公司，公司位于：秦皇島市北戴河區牛頭崖鎮戴河新城A區25號門市，多年來，富田電氣堅持為客戶提供好的服務，聯系人：付先生。歡迎廣大新老客戶來電，來函，親臨指導，洽談業務。富田電氣期待成為您的長期合作伙伴！