高壓軟起動(dong)器方(fang)式有(you)很多，一般(ban)的固(gu)態(tai)(tai)指的是可(ke)控硅的固(gu)態(tai)(tai)軟起，液(ye)態(tai)(tai)指的是液(ye)態(tai)(tai)水電(dian)阻軟起。總體來說，“固(gu)態(tai)(tai)”比(bi)“液(ye)態(tai)(tai)”好!

液態水電(dian)(dian)(dian)(dian)阻(zu)的降壓(ya)啟動(dong)(dong)方式(shi)可變(bian)(bian)電(dian)(dian)(dian)(dian)阻(zu)一般由水和電(dian)(dian)(dian)(dian)解(jie)質組成，利用極板的移(yi)動(dong)(dong)或通電(dian)(dian)(dian)(dian)后水溫的變(bian)(bian)化來達到(dao)電(dian)(dian)(dian)(dian)阻(zu)的變(bian)(bian)化，前(qian)者簡稱(cheng)“液態式(shi)”，后者簡稱(cheng)“熱變(bian)(bian)式(shi)”。我們暫且統稱(cheng)之為水電(dian)(dian)(dian)(dian)阻(zu)式(shi)。可變(bian)(bian)電(dian)(dian)(dian)(dian)阻(zu)式(shi)減(jian)壓(ya)起動(dong)(dong)為能(neng)量(liang)損耗性減(jian)壓(ya)起動(dong)(dong)，起動(dong)(dong)時把(ba)大量(liang)的能(neng)量(liang)消耗在水電(dian)(dian)(dian)(dian)阻(zu)上，然后逐漸向電(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)轉移(yi)能(neng)量(liang)，使電(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)升速。

襄陽高壓軟啟動器,襄陽高壓軟啟動器價格分享水電阻減壓起動有如下的主要弱點。

(1)由于起動(dong)電(dian)(dian)(dian)(dian)(dian)流(liu)的設(she)定值是(shi)由汽化電(dian)(dian)(dian)(dian)(dian)阻(zu)決定的，因此在水汽化之前(qian)的很(hen)短時間(jian)內水電(dian)(dian)(dian)(dian)(dian)阻(zu)很(hen)小(xiao)，這時的電(dian)(dian)(dian)(dian)(dian)流(liu)會(hui)遠大于設(she)定值，在電(dian)(dian)(dian)(dian)(dian)網容(rong)量不(bu)是(shi)很(hen)大的情(qing)況下，此大電(dian)(dian)(dian)(dian)(dian)流(liu)會(hui)使電(dian)(dian)(dian)(dian)(dian)網電(dian)(dian)(dian)(dian)(dian)壓(ya)急劇下降，影響其他設(she)備(bei)的正常(chang)運行，失去減壓(ya)起動(dong)的意義(yi)。

(2)汽(qi)化(hua)電(dian)阻與許多因素有(you)關，如環境溫度、極板情況(kuang)、電(dian)源狀況(kuang)等，因此起動電(dian)流的控制精度很差，變化(hua)范圍大。

(3)起(qi)(qi)動時產(chan)生的熱量使水升溫，要再次起(qi)(qi)動則(ze)要等(deng)水降溫后方(fang)可，因此對連續起(qi)(qi)動次數是有限(xian)制的，電動機越大越不允許連續起(qi)(qi)動。

(4)水(shui)(shui)電(dian)阻(zu)(zu)減壓起動時(shi)，有時(shi)會發生汽化電(dian)阻(zu)(zu)太大，起動電(dian)流(liu)不能(neng)跨過(guo)門檻值(zhi)的(de)情況(kuang)造(zao)成起動失(shi)敗(尤其是熱變電(dian)阻(zu)(zu)式(shi)(shi))。這也(ye)是水(shui)(shui)電(dian)阻(zu)(zu)式(shi)(shi)的(de)起動電(dian)流(liu)設定(ding)值(zhi)不能(neng)較小的(de)原因。

(5)水(shui)電(dian)阻減(jian)壓(ya)起動(dong)時(shi)，常常把水(shui)電(dian)阻接在電(dian)機的(de)星(xing)點處(chu)，開關(guan)關(guan)合時(shi)，全電(dian)壓(ya)加在電(dian)動(dong)機繞組的(de)首端，產生(sheng)操作過(guo)電(dian)壓(ya)的(de)情(qing)況與全壓(ya)直接起動(dong)的(de)情(qing)況是一樣的(de)，會對(dui)電(dian)動(dong)機的(de)絕緣造成很大的(de)傷害。

(6)水電阻減壓(ya)起動(dong)(dong)時，起動(dong)(dong)電流設定值一般(ban)在(zai)3IN以上，時機端(duan)電壓(ya)在(zai)0.6UN左右，仍會產生較(jiao)大的轉矩沖擊，對電動(dong)(dong)機和機械(xie)設備都會造(zao)成較(jiao)大的傷害。

(7)水電(dian)(dian)(dian)阻減壓起(qi)(qi)動(dong)時，因一(yi)(yi)開(kai)(kai)始便(bian)有(you)較大(da)(da)的(de)(de)(de)電(dian)(dian)(dian)流值(zhi)，因此電(dian)(dian)(dian)動(dong)機(ji)仍有(you)較大(da)(da)的(de)(de)(de)加速度，在潤滑油尚未(wei)到位(wei)的(de)(de)(de)的(de)(de)(de)情況下電(dian)(dian)(dian)動(dong)機(ji)有(you)較高(gao)(gao)的(de)(de)(de)速度，仍會形成干磨，影響軸(zhou)承壽(shou)命(ming)。與低(di)壓電(dian)(dian)(dian)動(dong)機(ji)軟(ruan)起(qi)(qi)動(dong)技(ji)術的(de)(de)(de)性(xing)(xing)能 相比，水電(dian)(dian)(dian)阻的(de)(de)(de)弱點(dian)似(si)乎(hu)偏多了些(xie)，如(ru)果(guo)把它稱之為(wei)軟(ruan)起(qi)(qi)動(dong)實在是有(you)些(xie)不妥，故(gu)暫稱之為(wei)改(gai)進(jin)型(xing)減壓起(qi)(qi)動(dong)方法。可控(kong)硅(gui)的(de)(de)(de)固態軟(ruan)起(qi)(qi)采用(yong)可控(kong)硅(gui)串(chuan)(chuan)聯技(ji)術的(de)(de)(de)中壓電(dian)(dian)(dian)機(ji)軟(ruan)啟動(dong)裝(zhuang)(zhuang)置對元器(qi)(qi)件(jian)(jian)(jian)特性(xing)(xing)參(can)數的(de)(de)(de)一(yi)(yi)致(zhi)性(xing)(xing)要求很(hen)高(gao)(gao)，元器(qi)(qi)件(jian)(jian)(jian)的(de)(de)(de)篩選率很(hen)低(di)，而且篩選儀器(qi)(qi)的(de)(de)(de)價(jia)格(ge)(ge)很(hen)高(gao)(gao)，這致(zhi)使(shi)裝(zhuang)(zhuang)置的(de)(de)(de)價(jia)格(ge)(ge)較高(gao)(gao)。另(ling)外(wai)在使(shi)用(yong)一(yi)(yi)段(duan)時間后，元器(qi)(qi)件(jian)(jian)(jian)的(de)(de)(de)參(can)數還會發生(sheng)變化，使(shi)元器(qi)(qi)件(jian)(jian)(jian)的(de)(de)(de)均壓性(xing)(xing)能降低(di)，極易造成整串(chuan)(chuan)元器(qi)(qi)件(jian)(jian)(jian)的(de)(de)(de)損壞，使(shi)這種(zhong)裝(zhuang)(zhuang)置的(de)(de)(de)可靠性(xing)(xing)降低(di)，一(yi)(yi)旦元器(qi)(qi)件(jian)(jian)(jian)損壞，用(yong)戶很(hen)難(nan)修復，另(ling)外(wai)價(jia)格(ge)(ge)也很(hen)高(gao)(gao)。可控(kong)硅(gui)串(chuan)(chuan)聯式軟(ruan)啟動(dong)裝(zhuang)(zhuang)置的(de)(de)(de)輸出電(dian)(dian)(dian)壓連(lian)續可調(從零開(kai)(kai)始)，因而不會產生(sheng)過(guo)電(dian)(dian)(dian)壓。