Napetost in zanke transformatorjev – problemi in rešitve

1.

Na podlagi zgornje tabele poiščite R in P.

Rešitev

Transformatorjeva enačba:

V_s N_p = N_s V_p in V_p I_p = V_s I_s

V_s = sekundarna napetost, V_p = primarni Napetost, N_s = sekundarne zanke, N_p = primarne zanke_, I_p = primarni tokSem_s = sekundarni tok

Primarna napetost ( _Vp )

V _p I _p = V _s I _s

V _p (4) = (10)(80)

Vp = 800 / ₄

V _p = R = 200 voltov

Sekundarne zanke (N _s )

V _s N _p = N _s V _p

(10)(600) = N _s (200)

6000 = 200 N _s

N _s = 6000 / 200

N _s = P = 30 zank

2.

Na podlagi zgornje tabele poiščite K in L.

Rešitev:

Sekundarni tok (I _s ) transformatorja 1:

V _p I _p = V _s I _s

(200)(3) = (300)(I _s )

Is ₌ 600 / 300

Is ₌ K = 2 A

Sekundarna napetost (V _s ) transformatorja 2:

V _p I _p = V _s I _s

(40)(0,75) = V _s (1)

V _s = L = 30 voltov

3.

Na podlagi zgornje tabele poiščite P in Q.

Rešitev:

Primarna napetost ( _Vp )

V _s N _p = N _s V _p

(220)(300) = (600) V _p

(220)(3) = (6) V _p

660 = 6 V _p

Vp = 660 / ₆

V _p = P = 110 voltov

Primarni tok ( _Ip )

V _p I _p = V _s I _s

(110)( _Ip ) = (220)(2)

(110)( _Ip ) = 440

Ip ₌ 440 / 110

Ip ₌ Q = 4 A