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电机的星形接法和三角形接法有何不同

FABUSHIJIAN:2017-10-29 19:02:00 DIANJI:    

 
 

一、三角形接法与星形接法

  无锡宏达起重电机众博棋牌  把三相电源三个绕组的末端、X、Y、Z连接在一起,成为一公共点O,从始端A、B、C引出三条端线,这种接法称为“星形接法”又称“Y形接法”。

众博棋牌   SANXIANGDIANYUANSHIYOUPINLVXIANGTONG、ZHENFUXIANGDENGERXIANGWEIYICIXIANGCHA120°DESANGEZHENGXIANDIANYUANYIYIDINGFANGSHILIANJIEXIANGWAIGONGDIANDEXITONG。



众博棋牌   SANXIANGDIANYUANDELIANJIEFANGSHIYOUYXINGHE△XINGLIANGZHONG。

众博棋牌   XINGXINGJIEFAHESANJIAOXINGJIEFADOUSHIZHIDIANJIBENSHENDERAOZUJIEFA,XINGXINGJIEFAZHIJIANGDIANJIRAOZUSANXIANGMODUANJIEZAIYIQI,SANXIANGSHOUDUANWEIDIANYUANDUAN;SANJIAOXINGJIEFAZHIJIANGSANXIANGRAOZUSHOUWEIHUXIANGLIANJIE,SANGEDUANDIANWEIDIANYUANDUAN;WULUNNEIZHONGJIEFA,DOUBIXUYAOYOUSANXIANGXIANGWEIHUCHA120DUDESANXIANGZHENGXIANJIAOLIUDIANYUANGONGDIAN,BUKEYONG220VDEDAITIDE。

  YINWEISANXIANGJIAOLIUDIANDESANXIANGHUOXIAN( A、B、C)SUIDUIYIDIANYADOUWEI220V,DANTAMENZHIJIANDEXIANGWEIHUCHA120DU,SANXIANGZHIJIANDEDIANYAHUCHA380V,YONGSANGETONGXIANGWEIDEHUOXIANSHIBUNENGDAITIDE。

  二、三相电的星形接法

  DUICHENGSANXIANGSIXIANY-YXITONGSHICHANGJIANCHANGYONGDEXITONG,YOUSANTIAOHUOXIAN、YITIAOZHONGXIAN。XINGXINGJIEFADESANXIANGDIAN,XIANDIANYASHIXIANGDIANYADEGENHAO3BEI,ERXIANDIANLIUDENGYUXIANGDIANLIU。DANGSANXIANGFUZAIPINGHENGSHI,JISHILIANJIEZHONGXINGXIAN,QISHANGYEMEIYOUDIANLIULIUGUO。SANXIANGFUZAIBUPINGHENGSHI,YINGDANGLIANJIEZHONGXINGXIAN,FOUZEGEXIANGFUZAIJIANGFENYABUDENG。

  星形接法主要应用在高压大型或中型容量的电动机中,定子绕组只引出三根线。对于星形接法,各相负载平衡,则任何时刻流经三相的电流矢量和等于零。  



  三、电机两种接线方法图  



  CONGSHANGTUKEYIKANCHU,SHANGXIAZHUANGYICILIANJIESHISANJIAOXING,SHANGMIANSANGENZHUANGJIEYIQISHIXINGXING,RUDIANJIWUJIEJIEHE

  DIYIXIANGRAOZUTOUWEIBIAOSHANG1.4

众博棋牌   DIERXIANGRAOZUTOUWEIBIAOSHANG2.5

  DISANXIANGRAOZUTOUWEIBIAOSHANG3.6

众博棋牌   XINGXINGJIEFA:456JIEYIQI,123JIEDIANYUAN

  SANJIAOXINGJIEFA:1LIANJIE6,2LIANJIE4,3LIANJIE5,CHENGWEIDIANJIDESANGENCHUXIAN

  四、说明

  (1)DIANJISANJIAOXINGJIEFASHIYINWEIMEIYOUZHONGXINGDIAN,JUTIFANGFASHIDIANJIDESANXIANGRAOZUDETOUYUWEIFENBIELIANJIE,ZHEISHIZHIYOUYIZHONGDIANYADENGJI,XIANDIANYADENGYUXIANGDIANYA,XIANDIANLIUDENGYUXIANGDIANLIUDEYUE1.73BEI

  (2)DIANJIXINGXINGJIEFASHIYINWEIYOUZHONGXINGDIAN(DIANJIYIBANDOUSHISANXIANGDUICHENGFUZAISUOYIYIBANBUYINCHUZHONGXINGXIAN),JUTIFANGFASHIDIANJIDESANXIANGRAOZUDESANTIAOWEILIANJIEZAIYIQI,SANTIAOTOUJIEDIANYUAN,ZHEISHIYOULIANGZHONGDIANYADENGJI,JIXIANDIANYAHEXIANGDIANYA,QIEXIANDIANYADENGYUXIANGDIANYADEYUE1.73BEI,XIANDIANLIUDENGYUXIANGDIANLIU。

  (3)XUYAOZHUYIDESHIBENLAIXINGXINGJIEFADEDIANJIBUNENGJIECHENGSANJIAOXING,(RUGUOJIECHENGSANJIAOXING,ZHEISHIXIANGDIANYASHENGGAODAOYUE1.73BEI,ZHANGSHIJIANYUNXINGBIRANSHAOHUIDIANJI)。

  (4)TONGYANGBENLAISANJIAOXINGJIEFADEDIANJIBUNENGJIECHENGXINGXING,(RUGUOJIECHENGXINGXING,ZHEISHIXIANGDIANYAJIANGDIDAOYUE1.73BEI,DABUDAOZHENGCHANGGONGLV,RUGUODAIEDINGFUZAI,NEIMEZHEISHISHUYUGUOZAIZHUANGTAI,SHIJIANYIZHANGYEBIRANSHAOHUIDIANJI)。

  ( 5)ZAIWOGUOYIBAN3-4KW(QIANWA)YIXIAJIAOXIAODIANJIDOUGUIDINGJIECHENGXINGXING,YISHANGJIAODADIANJIDOUGUIDINGJIECHENGSANJIAOXING。

  ( 6)WEISHENMEJIAODAGONGLVDIANJIDOUJIECHENGSANJIAOXING,HAOCHUSHIQINGZAIQIDONGSHI,WEILEFANGBIANJIANGYAQIDONG(QIDONGSHIJIECHENGXINGXING,YUNXINGSHIHUANJIECHENGSANJIAOXING,DIANJIQIDONGSHIJIANJIDUANJIECHENGXINGXINGMEIGUANXI,HAOCHUSHIQIDONGDIANLIUKEYIJIANGDIDAO1/3DENG。

  星型接法相电流等于线电流,线电压是相电压的根号3倍, 三角形连接,线电压等于相电压,线电流是相电流的根号3倍,对于三相对称负载接成某种连接。  



  五、两种接法的对比

  (1)SANJIAOXINGJIEFA:YOUZHUYUTIGAODIANJIGONGLV,QUEDIAN,QIDONGDIANLIUDA,RAOZUCHENGSHOUDIANYA(380V)DA。ZENGDALEJUEYUANDENGJI。

  (2)XINGXINGJIEFA:YOUZHUYUJIANGDIRAOZUCHENGSHOUDIANYA(220V),JIANGDIJUEYUANDENGJI。JIANGDILEQIDONGDIANLIU。QUEDIAN,DIANJIGONGLVJIANXIAO。 SUOYI,XIAOGONGLVDIANJI4KWYIXIADEDABUFENCAIYONGXINGXINGJIEFA。DAYU4KWDECAIYONGSANJIAOXINGJIEFA。

众博棋牌   SANJIAOXINGJIEFADEDIANJIZAIQINGZAIQIDONGSHICAIYONGY-△QIDONG,YIJIANGDIQIDONGDIANLIU!QINGZAISHITIAOJIAN,YINWEIYJIEFAZHUANJUHUIBIANXIAO,JIANGDIQIDONGDIANLIUSHIMUDE,LIYONGYJIEFAJIANGDILEQIDONGDIANLIU!SANJIAOJIEFAGONGLVDA,QIDONGDIANLIUYEDA,XINGJIEFAGONGLVXIAO,QIDONGDIANLIUYEXIAO。

 
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