计算项 网段1 网段2
总大电流 1.25A(近似) 1.25A(近似)
总所需电流 0.75A 2.25A
1.由粗缆公式得出网段1各个设备的电压。
SUM {[( Ln x (0.0045)) + (Ntx (0.005))] x In}< 4.65V.
0.2-5A
2.将各个设备的电压相加得到网段1的总电压。
D1 A.[(100 x (0.0045)) + (1 x (0.005))] x 0.25 = 0.12V
0.25A
~^~1 B.[(400 x (0.0045)) + (2 x (0.005))] x 0.25 = 0.45V
0.2-5A
5 C.[(800 x (0.0045)) + (3 x (0.005))] x 0.25 = 0.90V
0.12V+0.45V+0.90V = 1.47V
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