YIZHITIAOJIAN:JULIL=0.63km,GONGLVWEIP=18.5KW,EDINGDIANYAU=380V,GONGLVYINSHUQUcosφ0.8,XIAOLVQUη:90%;WOMENLAIQIUXUANYONGDUODADEDIANLANNENGMANZUDIANYAJIANGBUDAYU5%。

SHOUXIANJISUANDIANLIU:I=P/√3U*cosφ*η=18.5/1.732*0.38*0.8*0.9=39A

广东快乐十分ZHENGCHANGANDIANLIUXUAN10mm²JIUGOULE,DANSHIYOUYUJULIYUANDIANYAJIANGHENDA,WOMENSHOUXIANXUANZEXIAOYANDEJIEMIANYIDINGYAOBI10PINGFANGDAYIXIE,WOMENXIANSUAN25PINGFANGTONGXINYJV22-0.6/1KV-3*25+16mm²DIANLANMINGFU,XIAMIANWOMENLAIYANSUANXIADIANYAJIANG

GONGSHI△u%={√3*I*L*(R*cosφ+X*sinφ)}/10*U

广东快乐十分CHABIAO:25PINGFANGDIANLANDIANZUR:0.87Ω/km DIANKANGX:0.082Ω/km

△u%={√3*I*L*(R*cosφ+X*sinφ)}/10*U

={√3*39*0.63*(0.087*0.8+0.082*0.6)}/10*0.38

=8.38%

DIANYAJIANGCHAOGUOLE5%,SUOYIDIANLANJIEMIANYAOJIADA

SHANGMIANGONGSHIKANQILAIBIJIAOFUZA,DIANLISHANGCHANGYONGDESHIYONGDIANLIUJUJISUANDIANYAJIANGGENGSHIFANGBIAN,TONGGUOCHABIAOWOMENKEYIDEZHIGEDIANLANXINGHAODEDIANLIUJU△ua%,KEYICHAPEISISHOUCE。

△u%=△ua%*I*L

△ua% DIANLANDIANLIUJU

△u% DIANYAJIANGBAIFENBI

WOMENKEYIQIUCHUBUDAYU5%DIANYAJIANGSUOXUYAODEDIANLIUJU,TONGGUOCHABIAOWOMENDECHUDIANLANJIEMIAN

△ua%=△u%/I*L=5/39*0.63=0.2%A.km

广东快乐十分TONGGUOCHABIAOZAIGONGLVYINSHU0.8SHI,35PINGFANGDETONGXINDIANLAN0.249%A.KM,50PINGFANGDETONGXINDIANLAN0.18%A.KM。

广东快乐十分TONGGUOYISHANGJISUANWOMENKEYIDECHUYINGXIANGDIANYAJIANGDEZHUYAOYINSHUYOUXIANLUZHANGDU,DIANLANJIEMIANJI,DIANLIU,HEGONGLVYINSHU。

SHANGMIANDEJISUANKANCHU39ADIANLIUXUANYONG50PINGFANGDIANLANQUESHIYOUXIELANGFEILE,DANSHIWEILEDIANYAJIANGYEMEIBANFA,WOMENWEIYIKEYIDIAOZHENGDEJIUSHIZAIXIANCHANGJIAZHUANGWUGONGBUCHANGLAITIGAOGONGLVYINSHU,JIANGDIXIANLUZHONGDEWUGONGDIANLIULAIJIANGDIDIANYAJIANG,CONGERJIANSHAODIANLANJIEMIAN。

用电流距加查表的方法来计算下电压降

用电流距加查表的方法来计算下电压降

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