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Frequently Asked Questions

This section is for informational purposes only and should not be used as a design tool or to generate technical specifications. For further details, please contact CTI and discuss with a representative for clarification. Search for terms or questions by entering words or phrases in the text box and clicking Search, by selecting a category from the drop-down list and clicking Show. Then simply click on the linked term or question below.

Question: Voltage Regulation in Transformers

Answer: Voltage regulation in transformers is the difference between the no-load voltage and the full-load voltage. This is usually expressed in the terms of percentage: for example, with a transformer that delivers 100 volts at no-load and 95 volts at full-load, the regulation would be 5%. Power and lighting transformers generally have regulation from 2% to 4%, depending on the size and the application for which they are used. For special requirements such as instruments or computers, see the paragraph describing Regulating Transformers.

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