Transformer

Overview

A transformer transfers electrical energy between circuits through electromagnetic induction. It can step voltage up or down while conserving power (ideally).

Formula

$\frac{V_1}{V_2} = \frac{N_1}{N_2}$

Calculator

Notes

• Results are approximate and should be verified for critical applications
• Input values should be within reasonable engineering ranges

Single Phase Transformer Full Load Current

For a single-phase transformer, the full load current can be calculated using:

$I = \frac{S \times 1000}{V}$

where:

• $I$ = full load current (A)
• $S$ = transformer apparent power (kVA)
• $V$ = voltage (V)

Three Phase Transformer Full Load Current

For a three-phase transformer, the full load current is:

$I = \frac{S \times 1000}{\sqrt{3} \times V}$

Single Phase Transformer Ratings

Three Phase Transformer Ratings

Interactive Charts

References

• Original Source