U = 220V (400÷2000 )
= 100÷8000
∆U=U-U
E = U-U=0 ∆φ = 0
C 2 90 U . U (, R2, R3).
U U , .
( 900), .
, :
- ~ 30 .;
- ~ 1 .;
- ~ 10 .
1)
.
. . .
<900.
2)
. . .
3. - . (- )
( ) .
( ) .
, . 900. , .
4. .
, U, . 0-550, . .
R- .
, 0,1%,
5.
