ZBZ-4.0 / 1140(660)ZG無觸點煤電鉆綜合保護裝置(圓型)
一、概述
本裝置用(yong)于煤(mei)礦井下660V、1140V電(dian)(dian)(dian)(dian)壓的(de)電(dian)(dian)(dian)(dian)網,用(yong)于127V、1.2KW-1.5KW手持式煤(mei)電(dian)(dian)(dian)(dian)鉆的(de)遠方控制,該裝置是針對目前國內煤(mei)礦井下使(shi)用(yong)的(de)煤(mei)電(dian)(dian)(dian)(dian)鉆綜合(he)保護(hu)(hu)在實際(ji)運(yun)行(xing)(xing)中(zhong)所存在的(de)問題而(er)開發(fa)研(yan)制的(de)一種新型的(de)無觸點煤(mei)電(dian)(dian)(dian)(dian)鉆綜合(he)保護(hu)(hu)裝置屬(shu)國內首(shou)創。它可以(yi)消(xiao)除煤(mei)電(dian)(dian)(dian)(dian)鉆工作(zuo)時交流接觸器觸頭回跳所產(chan)生(sheng)的(de)機械振動、電(dian)(dian)(dian)(dian)火花、電(dian)(dian)(dian)(dian)磁干擾及反向瞬間過電(dian)(dian)(dian)(dian)壓。具有漏電(dian)(dian)(dian)(dian)、漏電(dian)(dian)(dian)(dian)閉(bi)鎖、短(duan)路、過載、斷(duan)相等多種保護(hu)(hu)功能(neng),并可光色顯示裝置的(de)故障和運(yun)行(xing)(xing)狀(zhuang)態(tai)。煤(mei)電(dian)(dian)(dian)(dian)鉆不工作(zuo)時。電(dian)(dian)(dian)(dian)纜(lan)不帶(dai)電(dian)(dian)(dian)(dian)。
本裝置(zhi)采用越級先(xian)導控制回(hui)路(lu)(lu),使主變壓器(qi)(qi)在(zai)被控制設備(bei)不工(gong)作(zuo)進不帶(dai)電(dian),既節(jie)約電(dian)能(neng),又安全可靠。主電(dian)路(lu)(lu)的(de)通電(dian)斷電(dian)采用較先(xian)進固(gu)態(tai)繼(ji)電(dian)器(qi)(qi),實現了煤電(dian)鉆(zhan)開啟(qi)的(de)無(wu)觸(chu)點(dian)控制,二次(ci)控制器(qi)(qi)電(dian)路(lu)(lu)繼(ji)電(dian)器(qi)(qi)觸(chu)點(dian)為直流10V,電流(liu)5~10mA,提高了小(xiao)型繼電器的工作穩定性,使(shi)整(zheng)機使(shi)用(yong)壽命達到千萬次免維修(xiu)。
二、技術性(xing)能
1)短(duan)(duan)(duan)路保(bao)護(hu)靈(ling)敏(min)可靠,主要保(bao)護(hu)元件,具有自(zi)(zi)檢(jian)作(zuo)(zuo)用(yong)。短(duan)(duan)(duan)路保(bao)護(hu)采用(yong)載頻檢(jian)測與熔斷器雙重(zhong)保(bao)護(hu)。電(dian)鉆(zhan)不工作(zuo)(zuo)時(shi)發(fa)生短(duan)(duan)(duan)路,可實現短(duan)(duan)(duan)路閉(bi)鎖。保(bao)護(hu)裝置動作(zuo)(zuo)后,電(dian)路具有自(zi)(zi)鎖作(zuo)(zuo)用(yong)。
2)采用先(xian)導回路,可在遠(yuan)方開停電(dian)鉆,不(bu)打(da)鉆時電(dian)纜不(bu)帶電(dian)、安全可靠。
3)電(dian)鉆變壓器、控制(zhi)開關、短(duan)路保(bao)護、漏電(dian)保(bao)護、先導控制(zhi)回(hui)路組成(cheng)綜合保(bao)護裝(zhuang)置。
三(san)、主要技(ji)術參數
1)主變壓器
額定容量
kVA
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額 定(ding) 電 壓 V
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向(xiang) 量 圖
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額定電流(liu)(A)
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|
高(gao)壓(ya)
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低壓
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高壓
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低壓
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2.5
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1140-660
660-380
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133
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Y—△
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△
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1.27,2.28/10.85
2.28,3.79/10.85
|
|
4.0
|
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2.03,3.49/17.36
3.49,5.8/17.36
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|
2) 保護參數
被(bei)控制電(dian)鉆(zhan)功(gong)率 2.5KVA 1.2KW;4.0KVA 2.0KW
漏地電阻整定(ding)值 2±20%KΩ;
漏電保護動(dong)作時間 ≤0.25s;
短路(lu)保護距離 0-150m
短路(lu)保護(hu)動(dong)作時間(jian) ≤0.1s;
漏電閉鎖值 4±20%KΩ