Regulation of a Transformer is Helpful for Systems?

 What is the Regulation of a Transformer?

The regulation of the transformer menses the voltage regulation of a transformer.

 

So, the voltage regulation of a transformer may define as a transformer voltage regulation is the percentage change of the output voltage from no-load to full-load. 

Please remember that since the power factor is a determining factor in the secondary voltage, so power factor influences the voltage regulation of the transformer. 

So for example, if a single-phase transformer has an open-circuit no-load terminal voltage is 100 volts and the same terminal voltage drops to 95 volts due to the power factor on the application of a connected load, the transformers voltage regulation would therefore be 0.05 

or 5%, ((100 – 95)/100)*100%).

Formula to Calculate the Transformer Voltage Regulation

Voltage regulation is mainly calculated in the percentage of no-load and full-load values-

The load regulation of the transformer (percent) = 100 x (voltage in no-load — voltage in full-load) divided by voltage -n full-load. 

Please be in mind in practical a transformer, the value of the secondary terminal voltage at no load is always greater than the secondary terminal voltage at full load.

Line regulation is another measure of voltage regulation.

If you are interested to know the details of voltage regulation, let's scroll the below theory of transformer voltage regulation:

You may know the details about the electrical transformer from the following articles:

 

1. Working Principle of Transformer;
2. Transformer Construction;
3. Core-type Transformers;
4. Shell-type Transformers;
5. Elementary Theory of an Ideal Transformer;
6. E.M.F. Equation of Transformer;
7. Voltage Transformation Ratio;
8. Transformer with losses but no Magnetic Leakage;
9. Transformer on No-load;
10. Transformer on Load;
11. Transformer with Winding Resistance but no Magnetic Leakage;
12. Equivalent Resistance;
13. Magnetic Leakage;
14. Transformer with Resistance and Leakage Reactance;
15. Simplified Diagram;
16. Total Approximate Voltage Drop in Transformer;
17. Exact Voltage Drop;
18. Equivalent Circuit Transformer Tests;
19. Open-circuit or No-load Test;
20. Separation of Core Losses;
21. Short-Circuit or Impedance Test;
22. Why Transformer Rating in KVA?;
23. Regulation of a Transformer;
24. Percentage Resistance, Reactance, and Impedance;
25. Kapp Regulation Diagram;
26. Sumpner or Back-to-back-Test;
    
27. The efficiency of a Transformer;
28. Condition for Maximum Efficiency;
29. Variation of Efficiency with Power Factor;
30. All-day Efficiency;
31. Auto-transformer;
32. Conversion of 2-Winding Transformer into Auto-transformer;
33. Parallel Operation of Single-phase Transformers;
34. Questions and Answers on Transformers;
35. Three-phase Transformers;
36. Three-phase Transformer Connections;
37. Star/Star or Y/Y Connection;
38. Delta-Delta or ∆/∆ Connection;
39. Wye/Delta or Y/ Connection;
40. Delta/Wye or ∆/Y Connection;
41. Open-Delta or V-V Connection;
42. Power Supplied by V-V Bank;
43. Scott Connection or T-T Connection;
44. Three-phase to Two-Phase Conversion and vice-versa;
45. Parallel Operation of 3-phase Transformers;
46. Instrument Transformers;
47. Current Transformers;
48. Potential or Voltage Transformers.