# How to calculate the impedance of a transformer? ### How to calculate the impedance of a transformer?

Therefore, one must separately add the resistances and reactances up to the point of short circuit, and then determine theimpedance total. This involves determining the values ​​brought back to the secondary of the resistance RTR and the reactance XTR of the transformer.

### How to calculate winding?

Number of turns of thewinding : N = 100 / 0.0. FORMULA 126 – Calculation of the intensity of the current which must traverse thewinding of a coil, knowing the magnetomotive force of the coil and the number of turns of thewinding. (This formula is taken from formula 124).

### How to calculate coil length?

D : how to calculate the length of a cable on a Reel The cable therefore occupies 60-30= 30 cm. Number of layers 30:1cm= 30 layers. Stay at calculate the number of turns. Total 150×1.41=210 m roughly (it’s mathematical but certainly not the EXACT reflection of reality).

### What are the types of transformer couplings?

The three couplings possible are the star, triangle and zigzag. the coupling from transformer represents the combination of coupling on the primary side, on the secondary side or even on the tertiary side.

### How to calculate the transformation ratio of an electrical transformer?

The transformation ratio (assuming that the question relates to an electrical transformer) is the ratio between the primary voltage of the transformer and the secondary voltage of the transformer (or vice versa). It can also be calculated between the number of turns present at the primary and at the secondary.

### How to calculate the voltage of a transformer?

With n the number of turns, U the voltage. 1 index of the primary or transformer input and 2 that of the secondary. In the ratio of turns. If there are 100 turns on the primary side and 200 on the secondary side, the voltage will be doubled at the output.

### How to know the number of turns of a transformer?

In practice, it is very rare, if not impossible, to know the number of turns of each of the windings of a transformer. However, we often find on the nameplate of the transformers the indication of the nominal voltage of the primary, that of the secondary, the admissible power and, even, the transformation ratio.

### How to calculate the voltage of a transformer?

There is also a transformer ratio which determines the ratio between the voltage applied to the primary of the transformer and that induced in the secondary. After various calculations, we associate the relationship between the voltages and the turns in a transformer can be expressed by the following formula: m = N 2/ N 1 = U 2/ U 1>