Transformer Nameplate Study Guide

Transformer questions often supply several equipment-data values. Identify what each nameplate item describes before choosing a formula or study conclusion.

Separate primary and secondary data, confirm phase, and keep transformer theory separate from Code sizing and protection decisions.

• Identify kVA, primary and secondary voltage, phase, and frequency.
• Recognize percentage impedance as a separate transformer characteristic.
• Read tap and connection terminology in the context of the question.
• Do not mix primary-side and secondary-side values.