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电气设备维修查找的步骤和方法 (适用于低压隔离开关等这种电气设备)

发布时间:2018-7-3 来源:万家电器 发布者:万家电器阅读:1300次

DIANQISHEBEI(DIYAGELIKAIGUAN)WEIXIUCHAZHAODEBUZHOUHEFANGFARUXIA:1.DIANLIUFA,2.CELIANGFA:CELIANGDIANYA,DIANLIUHEDIANZU,3.ZHIHUANYUANJIANFA、ZHUBUKAILUFA,4.DUANJIEFA。

SHEBEIWEIXIUCHAZHAODEBUZHOUHEFANGFARUXIA:


1.电流法

QISHI,DIANQISHEBEIWEIXIURENYUANZAIJIANXIUDIANQISHEBEIHEXIANLUSHI,RUGUOYONGQIANXINGDIANLIUBIAOJIANCHAGUZHANG,YESHIGEHENHAODEBANFA。DIANQISHEBEICHUXIANGUZHANGSHI,DIANLIUSHIHUIFASHENGBIANHUADE。YONGDIANLIUBIAOLAIGUANCHADIANLIU,YEKEYIHENKUAIDEQUEDINGGUZHANG。RUDIANDONGJISANXIANGDIANLIUGUODA,NEISHIGUOZAI;RUSANXIANGBUPINGHENG,YOUKENENGSHIDIANDONGJIRAOZUZAJIANDUANLUDEWENTI。DUIDIANQISHEBEIBENSHENYOUGUZHANG,DANYOUXUYAOTONGDIANLAICHAZHAOGUZHANGYUANYINSHI,TONGDIANSHIJIANBUNENGGUOZHANG。BIRUSANXIANGDIANDONGJIQUEXIANGYUNXING,TONGDIANSHIJIANZHANGLE,SHIHUISHAOHUIDIANDONGJIDE。


2.测量法:测量电压,电流和电阻

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水果拉霸2游戏 (2)CEDIANZU。CHAZHAOZILIAO,NONGQINGDIANQISHEBEIDEZHENGCHANGZUZHI,RANHOUCELIANGDIANZU,JIANGSUOCEDEDIANZUYUZHENGCHANGZHIXIANGBIJIAO,CONGERPANDUANDIANQISHEBEIDETONGDUANQINGKUANG,GUZHANGYUANYIN。DIANZUCELIANGFADEYOUDIANSHIANQUAN,QUEDIANSHICEDEDEDIANZUZHIBUZHUNQUESHI,HENRONGYIZAOCHENGPANDUANCUOWU。ZAICELIANGDIANZUSHI,YIDINGYAODUANKAIDIANYUAN,RUGUODIANLUYUQITADIANLUBINGLIANSHI,BIXUJIANGGAIDIANLUHEQITADIANLUDUANKAI,FOUZECELIANGDEDIANZUZHIJIUBUZHUNQUE,CONGERDAOZHIPANDUANCUOWU。

3.置换元件法、逐步开路法

(1)ZHIZHUANHUANYUANJIANFA:MOUXIEDIANLUDEGUZHANGYUANYIN,NENGCHUBURENDINGWEIYOUMOUYUANJIANYINQISHI,ZAIBAOZHENGANQUANDEQINGKUANGXIA,KEYIYONGXINGNENGLIANGHAODEYUANJIANLAITIHUAN,CONGERPANDUANGUZHANGSHIFOUYOUGAIYUANJIANDESUNHUAIERYINQIDE。

水果拉霸2游戏 (2)KAILUFA:DIANQIXIANLUDUANLUHUOJIEDISHI,YIBANWAIBUYOUMINGXIANDEMAOYAN、HUOHUAHESHAOJIAODEHENJIDENG。TONGGUOGUANCHAWANGWANGNENGPAICHU。YUDAONANYIJIANCHADEDUANLUHUOJIEDIGUZHANG,KEBADUOZHILUBINGLIANDIANLU,YIGEZHILUYIGEZHILUDEZHUYICONGXIANLUZHONGDUANKAI,RANHOUTONGGUOZHUYICELIANGLAIPANDUAN。JIANCHASHI,JIANYIYONGYIBIAOJIANCHA。GENJUSHEBEIWEIXIUFAZE,WOJUEDEYONGTONGDIANFAJIANCHABUHAO,YINWEIBENSHENDIANQISHEBEIHEXIANLUJIUFASHENGLEGUZHANG,QIANGDADEDUANLUDIANLIUHENRONGYISHAOHUIYUANJIANHESHEBEI。


4.短接法

电气设备(低压隔离开关)和线路故障中,往往较多的为断路故障。如导线断路、接触不良、松动、虚焊、假焊、熔断器熔断等。对这类故障除用电阻法、电压法检查外,还有一种更为简单可靠的方法,就是短接法。其方法是,用一根绝缘良好的导线,将所怀疑的断路部位短路接起来,如短接到某处,电路工作恢复正常,说明该处断路。此方法能够快速查找出故障,许多电工都喜欢这样做。但须注意:在短接的时候,千万注意不要短接错误。比如高压和低压短接,相与相间短接。如果短接错误,就有可能发生短路或误动作,反而扩了大故障范围,或造成严重后果。在检修中,对于强电流、大电流的设备和线路,不准许采用短接法排除故障。强电流或大电流用导线短接的话,会拉起强大的弧光,会对设备和人员造成伤害。

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YISHANGSUOSHU,JUNSHIDIANQISHEBEI、DIANQIXIANLUBENSHENCHUXIANGUZHANGSHIDEGUZHANGCHAZHAOFANGFA。

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