:

4; 5; 6





« ». – ; ; ; ; .

4 5.

4. – . U = 380. ; ; 200 .

– 15 . n = 15.

– 35 , n = 35;

= 40 . n = 40;

, , , , .

 

 

1.

2. ( ) I = I.

,

– ,

n –

I = I.

3. .

= + + = 200*15 + 200*35 + 200*40 = 18000 18 .

4.

1 – 10.

1 – 40.

UA, UB, UC 120.

, φ = 0, , . UA = UB = UC = 220 B 220/40 = 5,5 .

IA = 13,64 / 10 = 1,36

IB = 31,8 / 10 = 3,18

I = 36,3 / 10 = 3,63

I0

I0 , 1,2 , I0 = 1,2*10 = 12 .

 

 

 

 






: 2014-12-06; : 276.

Studopedia.info - - 2014-2017 . (0.007 .) |