Ratio Of Transformer Formula

Ratio Of Transformer Formula. The transformer ratio is N1/N2 = V1/V2 (1 primary and 2 secondary) Inductance of a coil is proportional to square of the number of turns in the coil so that gives the inductance ratio as L1/L2 = (N1/N2)^2 192K views View upvotes View 1 share Irfan Shah Trainee Engineer at TNB Liberty Power Limited (2017present) Answered 4 years ago2018100620170722.

Transformer rating in kVA = 100 kVA Primary Voltages = 11000 = 11kV Primary Current = 525 A Secondary Voltages = 415V Secondary Current = 1391 Amperes Now calculate for the rating of transformer according to P=V x I (Primary voltage x primary current) P = 11000V x 525A = 57750 VA = 5775kVA Or P = V x I (Secondary voltages x Secondary Current).

Transformer Voltage Ratio Inst Tools

Assuming an ideal transformer and the phase angles ΦP ≡ ΦS Note that the order of the numbers when expressing a transformers turns ratio value is very important as the turns ratio 31 expresses a very different transformer relationship and output voltage than one in which the turns ratio is given as 13.

How to Size a Transformer? Calculate the Rating of Transformer

The current and turns ration on a transformer are related by the following formula Np/Ns = Is (t)/Ip (t) For problem 1 If we apply 15 amps on primary what will be the secondary current Np/Ns = Is (t)/Ip (t) 100/5 = Is (t)/15 Is (t) = 30 amps.

Ferrite transformer turns calculation with example

By using voltage ratio formula of transformer = voltage ratio = 330 / 1029 = 321 Voltage ratio and turns ratio in transformer is equal to each other Hence N = 32 So we know all values to calculate secondary turns of ferrite core transformer.