大多數TENV電機的(de)尺寸都是分(fen)馬力的(de)，TENV電機可用(yong)于室內和(he)室外(wai)。

??全封閉風扇(shan)冷卻(que)（TEFC）

??完全(quan)封閉的(de)風(feng)扇冷卻(que)外(wai)殼類似(si)于TENV外(wai)殼，只是外(wai)部(bu)風(feng)扇安裝在電(dian)機(ji)驅動端的(de)對面。風(feng)扇通過(guo)在電(dian)機(ji)外(wai)部(bu)吹氣來提供額外(wai)的(de)冷卻(que)，從而更快(kuai)地散熱(re)。護(hu)罩覆(fu)蓋風(feng)扇，以防止任何(he)人接觸它。通過(guo)這種布置，沒(mei)有(you)外(wai)部(bu)空氣進入電(dian)動機(ji)的(de)內部(bu)。 TEFC電(dian)機(ji)可用于骯臟、潮濕或輕(qing)度腐(fu)蝕性的(de)操作條件，或預期會出(chu)現風(feng)雨(yu)的(de)情況(kuang)。

??防爆（XP）

??防爆電機(ji)(ji)外殼在外觀上與TEFC電機(ji)(ji)類似，但設(she)計(ji)為包含(han)內(nei)部(bu)并防止點(dian)燃(ran)電機(ji)(ji)周(zhou)圍的(de)特定(ding)氣體或蒸(zheng)汽。

當電(dian)(dian)動機(ji)(ji)(ji)電(dian)(dian)機(ji)(ji)(ji)定子繞阻的(de)絕(jue)緣(yuan)層(ceng)欠佳、絕(jue)緣(yuan)層(ceng)老化或電(dian)(dian)機(ji)(ji)(ji)風(feng)罩型號定子繞阻與(yu)電(dian)(dian)機(ji)(ji)(ji)外(wai)殼碰撞時，電(dian)(dian)機(ji)(ji)(ji)外(wai)殼，外(wai)殼感應起電(dian)(dian)，電(dian)(dian)機(ji)(ji)(ji)外(wai)殼制(zhi)造(zao)，電(dian)(dian)動機(ji)(ji)(ji)外(wai)殼對地有很高的(de)工作電(dian)(dian)壓。假如(ru)電(dian)(dian)動機(ji)(ji)(ji)沒有電(dian)(dian)線接(jie)頭，人(ren)遇(yu)到電(dian)(dian)動機(ji)(ji)(ji)外(wai)殼時，強勁的(de)電(dian)(dian)流量經身(shen)體注入地面，便(bian)會導(dao)致人(ren)身(shen)安(an)全(quan)安(an)全(quan)事故。

假(jia)如電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)機(ji)外(wai)殼接(jie)(jie)(jie)有接(jie)(jie)(jie)地(di)(di)線，因為接(jie)(jie)(jie)地(di)(di)線的(de)電(dian)(dian)(dian)(dian)(dian)(dian)阻器不大，電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)機(ji)外(wai)殼的(de)電(dian)(dian)(dian)(dian)(dian)(dian)位(wei)差與(yu)地(di)(di)面(mian)相(xiang)同，電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)塑料風罩人觸碰電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)外(wai)殼就(jiu)不容易觸電(dian)(dian)(dian)(dian)(dian)(dian)事(shi)故。事(shi)實上(shang)當電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)機(ji)走電(dian)(dian)(dian)(dian)(dian)(dian)比較(jiao)嚴重，如電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)定(ding)子繞阻與(yu)外(wai)殼碰撞時(shi)，因為根(gen)據接(jie)(jie)(jie)地(di)(di)線接(jie)(jie)(jie)地(di)(di)裝(zhuang)置(zhi)，導致很(hen)高的(de)短路容量，電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)機(ji)的(de)繼(ji)電(dian)(dian)(dian)(dian)(dian)(dian)保護裝(zhuang)置(zhi)設備(bei)姿勢(shi)，或保險管融斷(duan)，電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)外(wai)殼模具，斷(duan)開開關(guan)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)，使電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)機(ji)慢下來。別的(de)電(dian)(dian)(dian)(dian)(dian)(dian)氣設備(bei)外(wai)殼也必須電(dian)(dian)(dian)(dian)(dian)(dian)線接(jie)(jie)(jie)頭(tou)，其大道理全是一樣的(de)。因此以便確保人身安全，電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)機(ji)沒有電(dian)(dian)(dian)(dian)(dian)(dian)線接(jie)(jie)(jie)頭(tou)是不允許運作的(de)。

全封閉式的電機殼：

可防止 殼(ke)體內部(bu)和外部(bu)空氣(qi)之間(jian)的(de)自由交流，電機(ji)外殼(ke)有電，但沒有足夠(gou)的(de)封閉性的(de)話，只能被稱為不透氣(qi)。全封閉電機(ji)適合用(yong)于潮(chao)濕的(de)環(huan)境(jing)或有灰塵，污染較(jiao)嚴重的(de)環(huan)境(jing)。一些全封閉式(shi)電機(ji)，還可用(yong)于污染情(qing)況更嚴重的(de)應(ying)用(yong)程序。

全封閉冷卻風(feng)機(ji)電機(ji)殼：

一(yi)個完全封(feng)閉(bi)的風冷電(dian)機往(wang)往(wang)搭載了(le)外部(bu)冷卻(que)功能，它通過風扇(shan)整體的裝(zhuang)置可使電(dian)動(dong)機實現(xian)外部(bu)的封(feng)閉(bi)。

適用(yong)范圍：在(zai)防(fang)塵，防(fang)潮，防(fang)雨(yu)和(he)非(fei)性環境(jing)中，該(gai)款風(feng)機(ji)(ji)的使用(yong)是(shi)必要(yao)的。因(yin)為(wei)電(dian)動機(ji)(ji)提供的氣(qi)流(liu)不足，是(shi)無法驅(qu)(qu)動該(gai)裝置的驅(qu)(qu)動器的。這些電(dian)機(ji)(ji)通常在(zai)皮帶驅(qu)(qu)動的內聯(lian)或管道風(feng)機(ji)(ji)中使用(yong)。