Ϣ(li)ԴЇ(gu)Ԅ(dng)W(wng)TNϵy(tng)Уӵعϱo(h)õķʽ
1(dng)^(gu)o(h)ܝMҪr(sh)˲^(gu)ӵرo(h)
220VTNϵy(tng)o(h)ДϾ·ĕr(sh)g(yng)ϣ
늾·ֻo̶O(sh)ĩ(j)·T(yng)С5룻
늽oʽƄ(dng)ʽO(sh)ĩ(j)·T(yng)С0.4
2ľϵy(tng)^(gu)o(h)ܝMo(h)ܝM˲^(gu)o(h)
3(dng)lMr(sh)(yng)©o(h)
P(gun)ڲ·o(h)Ӌ(j)
Ӌ(j)l
늉U e=220V
O(sh)Ӌ(j)·BV-2*2.5(do)BVR-1*2.5PEãR0=8.7W/KM X0=0.127W/KM
O(sh)Ӌ(j)ƽ늾x50ף·L=100; ··xC65͔·ȡ|Rz=1.3W;
Ӌ(j)㹫ʽ
Id = U e / Zxl
ʽ U e~·늉
Zxlƞ·迹
o(h)Ӌ(j)
1Ӌ(j)Zxl
Zxl=̣0.0013+100*0.00872+100*0.0001272
= 0.759+0.00016
=0.871W
2Ӌ(j)ӵعId TNϵy(tng)
Id = U e / Zxl=220/0.871=253A
3У(yn)
(j)ʩ͵C65͔·2ͣ(dng)··~4-7r(sh)˲r(sh)(dng)
O(sh)Ӌ(j)õIJ··C65-10A/1PIe=10A;
ˆӵعĄ(dng)(sh)飺
m= Id / Ie =253/10 =25.3() ɱC˲r(sh)(dng)lr(sh)gt=0.02ȫMҎ(gu)Ҫ