Voltage taps on a three-phase transformer are ___.

Voltage taps on a three-phase transformer are ___.

• A. used to correct the output voltage in higher or lower input voltage scenarios
• B. located on the primary windings
• C. used to change the turns ratio of the transformer
• D. all of these

Answer: (D)

Voltage taps let you adjust the winding connection points to keep the output voltage within spec when the input line voltage varies. By selecting a different tap, you effectively change the turns ratio, which alters the output to compensate for higher or lower input voltages. These taps are part of the windings themselves, typically located on the primary winding so you can adjust the incoming voltage to the desired level. Because they serve all three roles—correcting output voltage for varying input, being placed on the winding, and changing the turns ratio—they collectively describe how voltage taps function on a three-phase transformer.

Voltage taps let you adjust the winding connection points to keep the output voltage within spec when the input line voltage varies. By selecting a different tap, you effectively change the turns ratio, which alters the output to compensate for higher or lower input voltages. These taps are part of the windings themselves, typically located on the primary winding so you can adjust the incoming voltage to the desired level. Because they serve all three roles—correcting output voltage for varying input, being placed on the winding, and changing the turns ratio—they collectively describe how voltage taps function on a three-phase transformer.