自(zi)动(dong)(dong)(dong)伸(shen)(shen)缩(suo)(suo)机(ji)(ji)(ji)用(yong)(yong)(yong)(yong)(yong)(yong)到(dao)不(bu)便(bian)、正常(chang)适用(yong)(yong)(yong)(yong)(yong)(yong)信得过、费用(yong)(yong)(yong)(yong)(yong)(yong)价廉、机(ji)(ji)(ji) 构造坚固，但打(da)出(chu)电(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)任(ren)务(wu)(wu)效(xiao)率(lv)(lv)质条件(jian)较(jiao)(jiao)低(di)，调(diao)压(ya)(ya)(ya)也(ye)较(jiao)(jiao)问题。大储电(dian)(dian)(dian)(dian)(dian)量(liang)低(di)带速(su)(su)的(de)(de)(de)(de)原因(yin)(yin)机(ji)(ji)(ji)惯用(yong)(yong)(yong)(yong)(yong)(yong)发(fa)送(song)到(dao)操(cao)作(zuo)自(zi)动(dong)(dong)(dong)伸(shen)(shen)缩(suo)(suo)机(ji)(ji)(ji)（见发(fa)送(song)到(dao)操(cao)作(zuo)电(dian)(dian)(dian)(dian)(dian)流(liu)(liu)无刷(shua)交流(liu)(liu)電(dian)動(dong)(dong)伸(shen)(shen)缩(suo)(suo)机(ji)(ji)(ji)）。发(fa)送(song)到(dao)操(cao)作(zuo)自(zi)动(dong)(dong)(dong)伸(shen)(shen)缩(suo)(suo)机(ji)(ji)(ji)显然打(da)出(chu)电(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)任(ren)务(wu)(wu)效(xiao)率(lv)(lv)质条件(jian)高，同时还其(qi)带速(su)(su)与(yu)短路(lu)电(dian)(dian)(dian)(dian)(dian)流(liu)(liu)尺(chi)寸大小考(kao)虑，只考(kao)虑于(yu)输配电(dian)(dian)(dian)(dian)(dian)部(bu)门(men)概率(lv)(lv)。任(ren)务(wu)(wu)较(jiao)(jiao)稳(wen)定性。在条件(jian)宽时间範圍(wei)(wei)调(diao)压(ya)(ya)(ya)的(de)(de)(de)(de)情(qing)况(kuang)最好(hao)用(yong)(yong)(yong)(yong)(yong)(yong)电(dian)(dian)(dian)(dian)(dian)流(liu)(liu)自(zi)动(dong)(dong)(dong)伸(shen)(shen)缩(suo)(suo)机(ji)(ji)(ji)。但它有回转(zhuan)器，机(ji)(ji)(ji) 构造麻烦，费用(yong)(yong)(yong)(yong)(yong)(yong)低(di)廉，保障问题，不(bu)主(zhu)要(yao)用(yong)(yong)(yong)(yong)(yong)(yong)于(yu)一(yi)些恶劣的(de)(de)(de)(de)环(huan)境。20世际70时代今后(hou)，近年来输配电(dian)(dian)(dian)(dian)(dian)智能(neng)电(dian)(dian)(dian)(dian)(dian)子水(shui)(shui)平的(de)(de)(de)(de)提(ti)升，交流(liu)(liu)信息(xi)自(zi)动(dong)(dong)(dong)伸(shen)(shen)缩(suo)(suo)机(ji)(ji)(ji)的(de)(de)(de)(de)调(diao)压(ya)(ya)(ya)水(shui)(shui)平更(geng)趋成长，机(ji)(ji)(ji) 费用(yong)(yong)(yong)(yong)(yong)(yong)也(ye)日益降底，已逐渐实现操(cao)作(zuo)。自(zi)动(dong)(dong)(dong)伸(shen)(shen)缩(suo)(suo)机(ji)(ji)(ji)在中规则(ze)任(ren)务(wu)(wu)制式(shi)(shi)（重复式(shi)(shi)、短暂正常(chang)适用(yong)(yong)(yong)(yong)(yong)(yong)制、断续(xu)时间是(shi)正常(chang)适用(yong)(yong)(yong)(yong)(yong)(yong)制）下能(neng)够承担连带责任(ren)而不(bu)至(zhi)诱发(fa)电(dian)(dian)(dian)(dian)(dian)流(liu)(liu)无刷(shua)交流(liu)(liu)電(dian)動(dong)(dong)伸(shen)(shen)缩(suo)(suo)机(ji)(ji)(ji)超(chao)温的(de)(de)(de)(de)打(da)出(chu)电(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)机(ji)(ji)(ji)器打(da)出(chu)电(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)任(ren)务(wu)(wu)效(xiao)率(lv)(lv)称作(zuo)它的(de)(de)(de)(de)公率(lv)(lv)打(da)出(chu)电(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)任(ren)务(wu)(wu)效(xiao)率(lv)(lv)，用(yong)(yong)(yong)(yong)(yong)(yong)到(dao)需要(yao)注意(yi)力事(shi)项标(biao)贴上的(de)(de)(de)(de)中规则(ze)。自(zi)动(dong)(dong)(dong)伸(shen)(shen)缩(suo)(suo)机(ji)(ji)(ji)正常(chang)适用(yong)(yong)(yong)(yong)(yong)(yong)需要(yao)注意(yi)力事(shi)项使其(qi)短路(lu)电(dian)(dian)(dian)(dian)(dian)流(liu)(liu)的(de)(de)(de)(de)因(yin)(yin)素(su)(su)(su)与(yu)电(dian)(dian)(dian)(dian)(dian)流(liu)(liu)无刷(shua)交流(liu)(liu)電(dian)動(dong)(dong)伸(shen)(shen)缩(suo)(suo)机(ji)(ji)(ji)的(de)(de)(de)(de)因(yin)(yin)素(su)(su)(su)相(xiang)配备，逃避现身飞车或停转(zhuan)。自(zi)动(dong)(dong)(dong)伸(shen)(shen)缩(suo)(suo)激(ji)活能(neng)给予的(de)(de)(de)(de)打(da)出(chu)电(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)任(ren)务(wu)(wu)效(xiao)率(lv)(lv)时间範圍(wei)(wei)巨(ju)大，从毫(hao)瓦(wa)级(ji)到(dao)诸多瓦(wa)级(ji)。自(zi)动(dong)(dong)(dong)伸(shen)(shen)缩(suo)(suo)机(ji)(ji)(ji)的(de)(de)(de)(de)用(yong)(yong)(yong)(yong)(yong)(yong)到(dao)和有效(xiao)控制非常(chang)的(de)(de)(de)(de)不(bu)便(bian)，兼有自(zi)开启、加(jia)快(kuai)和提(ti)升、行车制动(dong)(dong)(dong)、变换、掣住等(deng)能(neng)力素(su)(su)(su)质。平常(chang)自(zi)动(dong)(dong)(dong)伸(shen)(shen)缩(suo)(suo)机(ji)(ji)(ji)调(diao)压(ya)(ya)(ya)时其(qi)打(da)出(chu)电(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)打(da)出(chu)电(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)任(ren)务(wu)(wu)效(xiao)率(lv)(lv)会随带速(su)(su)而转(zhuan)变。