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一、概述(shu)

SLRQ液體電(dian)(dian)阻(zu)(zu)起(qi)(qi)動(dong)(dong)(dong)(dong)(dong)控(kong)制(zhi)器是(shi)為了進一(yi)步(bu)改善大(da)(da)、中型(xing)繞線電(dian)(dian)動(dong)(dong)(dong)(dong)(dong)機(ji)的(de)起(qi)(qi)動(dong)(dong)(dong)(dong)(dong)性能而研(yan)制(zhi)完成的(de)新(xin)一(yi)代起(qi)(qi)動(dong)(dong)(dong)(dong)(dong)控(kong)制(zhi)裝置。克服(fu)了頻敏變(bian)阻(zu)(zu)器、油(you)浸變(bian)阻(zu)(zu)器及(ji)鑄鐵變(bian)阻(zu)(zu)器等(deng)老式起(qi)(qi)動(dong)(dong)(dong)(dong)(dong)控(kong)制(zhi)設備沖(chong)擊電(dian)(dian)流大(da)(da)(一(yi)般約為額(e)定(ding)電(dian)(dian)流的(de)3～5倍(bei))，起(qi)(qi)動(dong)(dong)(dong)(dong)(dong)不美(mei)好等(deng)不足(zu)。它(ta)是(shi)通過在被控(kong)大(da)(da)、中型(xing)繞線電(dian)(dian)動(dong)(dong)(dong)(dong)(dong)機(ji)的(de)轉子回路(lu)中串入一(yi)液體電(dian)(dian)阻(zu)(zu)，且此電(dian)(dian)阻(zu)(zu)是(shi)在電(dian)(dian)動(dong)(dong)(dong)(dong)(dong)機(ji)起(qi)(qi)動(dong)(dong)(dong)(dong)(dong)時自(zi)動(dong)(dong)(dong)(dong)(dong)投入并(bing)在預定(ding)的(de)時間內自(zi)動(dong)(dong)(dong)(dong)(dong)、無級(ji)、連續(xu)切除，從(cong)而電(dian)(dian)機(ji)在美(mei)好的(de)起(qi)(qi)動(dong)(dong)(dong)(dong)(dong)電(dian)(dian)流條件下平(ping)穩(wen)起(qi)(qi)動(dong)(dong)(dong)(dong)(dong)。電(dian)(dian)機(ji)均勻升速，這對保護電(dian)(dian)機(ji)、用電(dian)(dian)設備、電(dian)(dian)網及(ji)節電(dian)(dian)等(deng)方面有(you)顯著(zhu)效果(guo)。加(jia)上系統(tong)起(qi)(qi)動(dong)(dong)(dong)(dong)(dong)、停止、、故障保護、聯絡、報(bao)警、顯示等(deng)方面進行精心設計，從(cong)而使液體變(bian)阻(zu)(zu)器與其它(ta)老式起(qi)(qi)動(dong)(dong)(dong)(dong)(dong)器相比較，具有(you)自(zi)動(dong)(dong)(dong)(dong)(dong)化程度高、起(qi)(qi)動(dong)(dong)(dong)(dong)(dong)電(dian)(dian)流小(一(yi)般小于(yu)額(e)定(ding)電(dian)(dian)流的(de)1.3倍(bei))，電(dian)(dian)網電(dian)(dian)壓低(di)亦(yi)能順利起(qi)(qi)動(dong)(dong)(dong)(dong)(dong)，很大(da)(da)地降低(di)了變(bian)壓器的(de)容量，是(shi)目前球磨(mo)機(ji)、提升機(ji)、破碎(sui)機(ji)、壓縮機(ji)、風機(ji)、水泵等(deng)重負載的(de)起(qi)(qi)動(dong)(dong)(dong)(dong)(dong)控(kong)制(zhi)設備。

SLRQ系列液體電阻起動器,襄陽液體電阻起動器,襄陽液體電阻起動器安裝可廣泛用于水泥、化工、鋼鐵、冶金、礦山等行業90—6000KW繞線式異步電動機。

二、工作原(yuan)理

SLRQ系列(lie)液(ye)體(ti)電(dian)阻(zu)(zu)起動(dong)器是采用特種介質的水溶液(ye)作(zuo)為電(dian)阻(zu)(zu)，在特殊設計(ji)的液(ye)阻(zu)(zu)箱(xiang)中引入(ru)極(ji)(ji)(ji)(ji)板(ban)作(zuo)電(dian)極(ji)(ji)(ji)(ji)串入(ru)電(dian)機轉子回(hui)路中，電(dian)機起動(dong)時，由(you)一(yi)小功(gong)率伺(si)服電(dian)機帶(dai)動(dong)極(ji)(ji)(ji)(ji)板(ban)移動(dong)來改變極(ji)(ji)(ji)(ji)板(ban)的相對位置，使(shi)(串入(ru)轉子回(hui)路的)液(ye)體(ti)電(dian)阻(zu)(zu)由(you)大到小作(zuo)無(wu)極(ji)(ji)(ji)(ji)變化，從(cong)而使(shi)電(dian)機低電(dian)流平(ping)滑(hua)起動(dong)。

三、性能特點(dian)

l 起動(dong)性能遠(yuan)優于(yu)頻敏變阻器(qi)、油浸變阻器(qi)、鑄鐵電阻等起動(dong)器(qi)。

l 軟起動，起動電流(liu)(liu)小(xiao)：小(xiao)于電機額(e)定電流(liu)(liu)的1.3倍;

l 可連續起(qi)動(dong)5-10次;

l 起(qi)(qi)動(dong)過程平滑起(qi)(qi)動(dong)：對設備(bei)無機械(xie)應力(li)沖擊，可延(yan)長(chang)機械(xie)設備(bei)及電(dian)機的壽命;

l 可低壓起動(dong)：電網電壓低于電機額定電壓的(de)10%時，可順利起動(dong);

l 適(shi)用(yong)性(xing)廣(guang)，可(ke)適(shi)用(yong)任何(he)負載狀況(kuang)下繞線(xian)式電(dian)機軟(ruan)起(qi)動，特(te)別(bie)適(shi)用(yong)于重載起(qi)動;

l 具有(you)起動(dong)超(chao)時、失壓、超(chao)行程、超(chao)溫等多(duo)重保護功(gong)能;

l 結構簡單、可靠，全部操作(zuo)自動化，安裝、維護方便。

四、主(zhu)要技術參數

l 起動電流 Iq≤1.3Ie;

l 起動時(shi)間(jian) 10—60S，預整定，現場可調;

一、概述

SLRQ液(ye)體電(dian)(dian)(dian)(dian)阻(zu)起(qi)動(dong)(dong)(dong)(dong)控制(zhi)器是為了(le)進(jin)一(yi)步(bu)改(gai)善大(da)、中(zhong)(zhong)型繞線電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)機(ji)的(de)(de)起(qi)動(dong)(dong)(dong)(dong)性能而研制(zhi)完成的(de)(de)新(xin)一(yi)代(dai)起(qi)動(dong)(dong)(dong)(dong)控制(zhi)裝置。克(ke)服了(le)頻(pin)敏變(bian)阻(zu)器、油浸變(bian)阻(zu)器及(ji)鑄鐵變(bian)阻(zu)器等(deng)老式起(qi)動(dong)(dong)(dong)(dong)控制(zhi)設(she)備(bei)沖擊(ji)電(dian)(dian)(dian)(dian)流大(da)(一(yi)般(ban)約為額(e)定電(dian)(dian)(dian)(dian)流的(de)(de)3～5倍)，起(qi)動(dong)(dong)(dong)(dong)不美好等(deng)不足。它(ta)(ta)是通(tong)過在(zai)被控大(da)、中(zhong)(zhong)型繞線電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)機(ji)的(de)(de)轉子回路中(zhong)(zhong)串入一(yi)液(ye)體電(dian)(dian)(dian)(dian)阻(zu)，且此電(dian)(dian)(dian)(dian)阻(zu)是在(zai)電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)機(ji)起(qi)動(dong)(dong)(dong)(dong)時(shi)自動(dong)(dong)(dong)(dong)投入并在(zai)預定的(de)(de)時(shi)間(jian)內(nei)自動(dong)(dong)(dong)(dong)、無級、連續切除，從而電(dian)(dian)(dian)(dian)機(ji)在(zai)美好的(de)(de)起(qi)動(dong)(dong)(dong)(dong)電(dian)(dian)(dian)(dian)流條件下平穩起(qi)動(dong)(dong)(dong)(dong)。電(dian)(dian)(dian)(dian)機(ji)均勻升(sheng)速(su)，這(zhe)對(dui)保護電(dian)(dian)(dian)(dian)機(ji)、用電(dian)(dian)(dian)(dian)設(she)備(bei)、電(dian)(dian)(dian)(dian)網(wang)及(ji)節電(dian)(dian)(dian)(dian)等(deng)方(fang)面有顯(xian)著效(xiao)果。加(jia)上系統起(qi)動(dong)(dong)(dong)(dong)、停止(zhi)、、故障保護、聯(lian)絡、報警、顯(xian)示等(deng)方(fang)面進(jin)行精心設(she)計，從而使液(ye)體變(bian)阻(zu)器與其它(ta)(ta)老式起(qi)動(dong)(dong)(dong)(dong)器相比較，具有自動(dong)(dong)(dong)(dong)化程度高、起(qi)動(dong)(dong)(dong)(dong)電(dian)(dian)(dian)(dian)流小(xiao)(一(yi)般(ban)小(xiao)于額(e)定電(dian)(dian)(dian)(dian)流的(de)(de)1.3倍)，電(dian)(dian)(dian)(dian)網(wang)電(dian)(dian)(dian)(dian)壓(ya)(ya)低(di)(di)亦能順利起(qi)動(dong)(dong)(dong)(dong)，很大(da)地降低(di)(di)了(le)變(bian)壓(ya)(ya)器的(de)(de)容量(liang)，是目前(qian)球磨機(ji)、提升(sheng)機(ji)、破碎機(ji)、壓(ya)(ya)縮機(ji)、風機(ji)、水泵(beng)等(deng)重負載起(qi)動(dong)(dong)(dong)(dong)控制(zhi)設(she)備(bei)。

SLRQ系列(lie)液體電阻起(qi)動器可廣泛用(yong)于水泥、化工、鋼鐵、冶金、礦山(shan)等行業90—6000KW繞線式異(yi)步電動機。

二、工作原理

SLRQ系列液(ye)體電(dian)(dian)阻(zu)起動(dong)器是采用特(te)種介(jie)質的水溶液(ye)作為電(dian)(dian)阻(zu)，在特(te)殊設計的液(ye)阻(zu)箱中引(yin)入(ru)極板作電(dian)(dian)極串(chuan)入(ru)電(dian)(dian)機(ji)轉子回(hui)路中，電(dian)(dian)機(ji)起動(dong)時，由一小功(gong)率伺(si)服電(dian)(dian)機(ji)帶(dai)動(dong)極板移動(dong)來改變極板的相對位置(zhi)，使(串(chuan)入(ru)轉子回(hui)路的)液(ye)體電(dian)(dian)阻(zu)由大(da)到小作無極變化，從而使電(dian)(dian)機(ji)低電(dian)(dian)流平滑起動(dong)。

三、性能特(te)點

l 起動(dong)性能(neng)遠優(you)于頻敏變阻(zu)(zu)器、油(you)浸(jin)變阻(zu)(zu)器、鑄鐵電(dian)阻(zu)(zu)等起動(dong)器。

l 軟起動，起動電(dian)流(liu)小：小于電(dian)機額定(ding)電(dian)流(liu)的1.3倍;

l 可(ke)連(lian)續起動(dong)5-10次;

l 起(qi)動(dong)過程(cheng)平滑起(qi)動(dong)：對設備無(wu)機械(xie)應力沖擊(ji)，可延(yan)長機械(xie)設備及電機的壽命;

l 可低壓起(qi)動：電(dian)(dian)網電(dian)(dian)壓低于電(dian)(dian)機(ji)額定電(dian)(dian)壓的10%時，可順利起(qi)動;

l 適用性(xing)廣(guang)，可適用任(ren)何負(fu)載狀況(kuang)下(xia)繞線式電機(ji)軟起動，特別適用于重載起動;

l 具(ju)有起(qi)動超(chao)時、失壓、超(chao)行程(cheng)、超(chao)溫等多重保護功能;

l 結構簡單(dan)、可靠，全部操作自動(dong)化，安裝、維護方便。

四、主要技(ji)術參(can)數

l 起動電流 Iq≤1.3Ie;

l 起動(dong)時間(jian) 10—60S，預整定，現場可調;

說明：

*1、輔助功能(neng)

*2額定容量：指適配電機(ji)大(da)功率(KW)，詳見標準規格(ge)

l 型號示(shi)例：

SLRQ—0.6P型(xing)(xing)表示適(shi)配大電(dian)機功率為630KW的(de)普(pu)通型(xing)(xing)液體電(dian)阻起(qi)動器(qi)。

l 選型依(yi)據(ju)：

SLRQ系(xi)列起動器(qi)選型(xing)(xing)的主要參(can)數為電機功(gong)率。用戶在選型(xing)(xing)時，應根據電機功(gong)率，依照上述命名方法和(he)本說明書“標準規格”中詳細的型(xing)(xing)號分類(lei)，確定要選用的起動器(qi)型(xing)(xing)號。

l 訂貨說明：

* 提(ti)供繞(rao)線電(dian)機型號、額定功率、定子電(dian)流(liu)、定子電(dian)壓(ya)、轉(zhuan)子電(dian)流(liu)、轉(zhuan)子電(dian)壓(ya);

* 提供電機拖動的負載特征(工況說明);

* 是否成套訂貨(huo)，成套訂貨(huo)包(bao)括：高(低)壓(ya)一(yi)次柜(ju)、液體電阻起(qi)動柜(ju);

* 注明高壓(ya)一次柜柜型(GG1A、XGN、KYN等(deng))

* 其它特殊要求。

九、標準(zhun)規格

十、外(wai)形示意圖

十一、與其(qi)它設(she)備的聯(lian)接(見附圖—電(dian)氣聯(lian)鎖圖)

十二、安裝調試

SLRQ系列(lie)起動器的安裝調(diao)試須在我方技(ji)術人員現場指(zhi)導(dao)下(xia)進行。但(dan)在正式(shi)調(diao)試前(qian)用(yong)戶需將設備就(jiu)位，并準備好(hao)連接主電(dian)機滑(hua)環至起動器的電(dian)纜(應(ying)能承載轉子電(dian)流)。

(一)、安(an)裝(zhuang)與(yu)連線(xian)

1、 控制柜(ju)和電阻柜(ju)應安裝(zhuang)在可泄水的(de)水泥(ni)平(ping)(ping)臺(tai)上(shang)，確保柜(ju)體(ti)與(yu)水平(ping)(ping)面垂直(zhi)，柜(ju)體(ti)緊固于平(ping)(ping)臺(tai) 上(shang)的(de)槽(cao)鋼上(shang)，且(qie)控制柜(ju)下(xia)方應有電纜溝(gou)。

2、 按(an)照電(dian)氣原理圖和電(dian)氣聯鎖圖將電(dian)動(dong)(dong)機(ji)轉子電(dian)纜線(xian)(電(dian)纜線(xian)能承載足夠的電(dian)流)引入起動(dong)(dong)控(kong)制(zhi)柜并連接好(hao)(hao)，同(tong)時接好(hao)(hao)聯鎖控(kong)制(zhi)線(xian)。

3、 檢查(cha)接線(xian)是否(fou)正確，緊固件是否(fou)松動(dong)。

十一(yi)、與其它設備(bei)的聯接(見附(fu)圖—電氣聯鎖圖)

十(shi)二、安裝調試

SLRQ系列起動器(qi)的安裝調(diao)試(shi)(shi)須(xu)在(zai)(zai)我(wo)方技術人員現(xian)場指導下進行(xing)。但在(zai)(zai)正式調(diao)試(shi)(shi)前用戶需將設備就位，并(bing)準備好連接(jie)主電機滑環至(zhi)起動器(qi)的電纜(應能承載轉子電流)。

(一)、安(an)裝與(yu)連線(xian)

1、 控(kong)制(zhi)柜(ju)和電(dian)阻柜(ju)應安裝在可泄水(shui)(shui)的(de)水(shui)(shui)泥平臺上，確(que)保柜(ju)體與(yu)水(shui)(shui)平面垂直，柜(ju)體緊固于平臺 上的(de)槽鋼上，且控(kong)制(zhi)柜(ju)下方(fang)應有電(dian)纜溝。

2、 按照電(dian)氣(qi)原理圖和電(dian)氣(qi)聯鎖(suo)圖將電(dian)動機(ji)轉子(zi)電(dian)纜(lan)線(xian)(電(dian)纜(lan)線(xian)能承載(zai)足夠的電(dian)流)引入起動控(kong)制柜并連接(jie)(jie)好，同時接(jie)(jie)好聯鎖(suo)控(kong)制線(xian)。

3、 檢查(cha)接線(xian)是否正(zheng)確，緊固件是否松動(dong)。

1、 檢查液體電阻極板對地絕緣電阻應≥5MΩ

(二)調試

1、 檢查(cha)液(ye)體電(dian)阻箱位置(zhi)和極(ji)板活動(dong)情況。在未配電(dian)阻液(ye)的情況下直向(xiang)提取活動(dong)極(ji)板，看是否靈(ling)活，否則應擺正液(ye)體電(dian)阻箱位置(zhi)。

2、 主電(dian)機一次回路(lu)不合閘，合上(shang)(shang)起動(dong)(dong)控制柜(ju)內的QF1，極板應(ying)向(xiang)復位向(xiang)移動(dong)(dong)，否(fou)則應(ying)立(li)即(ji)斷開QF1,并把(ba)A、B、C三相(xiang)電(dian)源線(xian)中任意兩(liang)相(xiang)線(xian)調換一下即(ji)可，合上(shang)(shang)試驗(yan)按鈕SA，試驗(yan)起動(dong)(dong)器的起動(dong)(dong)、運行(xing)狀態是否(fou)正常(chang)(chang)，然后斷開SA，看停機狀態是否(fou)正常(chang)(chang)。

3、 配制電(dian)阻液：

1 液體電阻的確定

串入電(dian)動機轉子回路每相電(dian)阻值(zhi)R0，按下式確定(ding)：

U2e：轉子(zi)(zi)開路(lu)電壓(ya) I2e：轉子(zi)(zi)額定電流

I1e：定子額定電流 I1：定子運行電流

KM：起動轉(zhuan)矩比：1.1～1.3

2 液(ye)體電(dian)阻的(de)配(pei)制

a 先將活動(dong)極板移到允(yun)許起動(dong)位置(zhi)，并將清水(shui)沖入(ru)水(shui)箱到規定水(shui)位的3/4左右;

b將電液溶解(jie)后分三等份(fen)注入三個(ge)水(shui)箱內，溶液濃度在3%左右;

c將(jiang)活動極(ji)升(sheng)降數次(ci)，溶液攪拌均(jun)勻，然后(hou)將(jiang)極(ji)板復位(wei)，測每相兩動靜極(ji)板間電阻值(zhi)R;

d若(ruo)R值在Ro范圍內(nei)，就(jiu)可試(shi)車起動;若(ruo)R值未在Ro范圍內(nei)則需要調(diao)整(zheng)。R過(guo)大時應變大電液濃度(du);R過(guo)小時應降低電液粉濃度(du)。

3 液體電阻的(de)測量

將液體電阻(zu)的(de)活動(dong)極(ji)板移至允(yun)許起動(dong)位置后，給每相(xiang)兩動(dong)靜(jing)極(ji)板之間(jian)通(tong)于(yu)50HZ，5A交(jiao)流電流I(A)，并測(ce)量兩電極(ji)之間(jian)的(de)壓降V(V)，測(ce)液體電阻(zu)值為(wei)：

R(Ω)= V(V)/ I(A)

測量電(dian)路如下：

B：調壓器 5KVA A：交流(liu)電(dian)流(liu)表(biao)0.5級(ji) V：交流(liu)電(dian)壓表(biao)0.5級(ji)

(三(san))試車

觀察起(qi)動(dong)電流是否小于(yu)1.3Ie，若是，則(ze)可以正式投入使(shi)用，否則(ze)，應調整(zheng)電阻液體濃度，若起(qi)動(dong)電流過大，則(ze)應加適量清水降低電液濃度。

B：調壓器(qi) 5KVA A：交流(liu)(liu)電(dian)流(liu)(liu)表0.5級 V：交流(liu)(liu)電(dian)壓表0.5級

(三)試車

觀(guan)察起動(dong)電(dian)(dian)流(liu)是否(fou)小于1.3Ie，若(ruo)是，則(ze)(ze)可以正式投入使(shi)用，否(fou)則(ze)(ze)，應(ying)(ying)調整電(dian)(dian)阻(zu)液(ye)體濃(nong)度，若(ruo)起動(dong)電(dian)(dian)流(liu)過大，則(ze)(ze)應(ying)(ying)加適量清水(shui)降低電(dian)(dian)液(ye)濃(nong)度。