电缆截面的选取_电工吧_贴吧.doc

_1380/2202.380/220 4.5 380 3 380/2203800.8,2.(2)1 5.5112 40803801.51.51 34.52 15231 12182 30453803 320480380/2204 100380150380/22022014.54.52202201 5000.52204.52.32 10004.54.5220362201/666*4.5=2736600.06*27=1.658380/22038013803802.51 32380802 238053 2138053,(),2.5201 61.7 100.8100.21 ,1%120*30=60025108510*10+8+5=2305*8+5=6510*5=505230+65+50=3452 .52201201%2 .52011%102.5420*4=80801%22036362201/61%201/61/3620*1/36=0.55360 .555501%3803802201.71%20*1 .7=582 .52011 2202 .57676203 .876/20=3 .83.8%2 440220122*40=8041%42 .51.64/2 .5=1 .620*1 .6=321%80/32=2 .52 .5%220380380/2202.51%620*6=1201 .72 .520120*1.7=341%3 76/34=2 .22 .2%80/32*1.7=1 .51 .5%4 50380306060*30=1800503801%502.520206620*20*6=24001800/2400=0 .750 .75%10100 .210 .211.22701 .615020.25 1203803*16 600163801%162 .56 .4620*6.4*6=768 600/768=0 .80 .8%101 .20 .8*1 .2=0.961%78%380/2205%2.5%5%400/2305%+5%=10%78%78%78%42.51 .562 .52 .5162 .5615%255%35503.5%70952 .5%1201 .53.5%2 .5%1 .5 .%5%35-1()252 S=0.785*D()10510025357095 3251. 1.5 2.5 4 6 10 16 25 35 50 70 95 120 150 185 2.5,1161010*5 1625*4 35 45*3 70 95*2.5 120*21010100100253525357095101002516103021501003003707095175253525100973510511725100351052.520120.8250.9250.8*0.9=0.72,0.7104010*5*0.8=40()45(10*5*0.9=45)()35(10*5*0.7=35)95()190(95*2.5*0.8=190)()214(95*2.5*0.9=213.8)()166(95*2.5*0.7=166.3) ,1.51 16 9616*4*1.5=96 8616*4*1.5*0.9=86.42 35, 158(35*3*1.5=157.5)3 120, 360(120*2*1.5=360),1 352550502522550*3*1.52 16252510025*43 9525 120192120*2*0.