140EIA92100
保護作用 能根據(jù)設備的特點,對設備、環(huán)境、以及人身實行自動保護,如電機的過熱保護、電網的短路保護、漏電保護等。
測量作用 利用儀表及與之相適應的電器,對設備,電網或其它非電參數(shù)進行測量,如電流、電壓、功率、轉速、溫度、濕度等。
調節(jié)作用 低壓電器可對一些電量和非電量進行調整,以滿足用戶的要求,如柴油機油門的調整、房間溫濕度的調節(jié)、照度的自動調節(jié)等。
指示作用 利用低壓電器的控制、保護等功能,檢測出設備運行狀況與電氣電路工作情況,如絕緣監(jiān)測、保護掉牌指示等。
轉換作用 在用電設備之間轉換或對低壓電器、控制電路分時投入運行,以實現(xiàn)功能切換,如勵磁裝置手動與自動的轉換,供電的市電與自備電的切換等
電磁式接觸器的工作原理如下:線圈通電后,在鐵芯中產生磁通及電磁吸力。此電磁吸力克服彈簧反力使得銜鐵吸合,帶動觸點機構動作,常閉觸點打開,常開觸點閉合,互鎖或接通線路。線圈失電或線圈兩端電壓顯著降低時,電磁吸力小于彈簧反力,使得銜鐵釋放,觸點機構復位,斷開線路或解除互鎖。
Fu Zhou ZhuoKai Electric Co., Ltd.
公司簡稱:卓凱電子
公司地址:福州市臺江區(qū)金融街萬達廣場二期A2#寫字樓11層12室
公司聯(lián)絡人:李工(銷售工程師)
Tel:0591-62182520
Fax:0591-62032566
Phone:13696852881
商務QQ:1273632994
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