140EHC20200
保護(hù)作用 能根據(jù)設(shè)備的特點(diǎn)，對(duì)設(shè)備、環(huán)境、以及人身實(shí)行自動(dòng)保護(hù)，如電機(jī)的過熱保護(hù)、電網(wǎng)的短路保護(hù)、漏電保護(hù)等。
測(cè)量作用 利用儀表及與之相適應(yīng)的電器，對(duì)設(shè)備，電網(wǎng)或其它非電參數(shù)進(jìn)行測(cè)量，如電流、電壓、功率、轉(zhuǎn)速、溫度、濕度等。
調(diào)節(jié)作用 低壓電器可對(duì)一些電量和非電量進(jìn)行調(diào)整，以滿足用戶的要求，如柴油機(jī)油門的調(diào)整、房間溫濕度的調(diào)節(jié)、照度的自動(dòng)調(diào)節(jié)等。
指示作用 利用低壓電器的控制、保護(hù)等功能，檢測(cè)出設(shè)備運(yùn)行狀況與電氣電路工作情況，如絕緣監(jiān)測(cè)、保護(hù)掉牌指示等。
轉(zhuǎn)換作用 在用電設(shè)備之間轉(zhuǎn)換或?qū)Φ蛪弘娖鳌⒖刂齐娐贩謺r(shí)投入運(yùn)行，以實(shí)現(xiàn)功能切換，如勵(lì)磁裝置手動(dòng)與自動(dòng)的轉(zhuǎn)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(chǎn)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(dòng)觸點(diǎn)機(jī)構(gòu)動(dòng)作，常閉觸點(diǎn)打開，常開觸點(diǎn)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(shí)，電磁吸力小于彈簧反力，使得銜鐵釋放，觸點(diǎn)機(jī)構(gòu)復(fù)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(tái)江區(qū)金融街萬達(dá)廣場(chǎng)二期A2#寫字樓11層12室
公司聯(lián)絡(luò)人：李工(銷售工程師)
Tel：0591-62182520
Fax：0591-62032566
Phone：13696852881
商務(wù)QQ：1273632994
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