Estimating a Transformer's Physical Size

Using the following graphs, a rough estimate of a transformer's dimensions can be obtained.

• Rated Power(kVA)
• Length(inches)
• Width(inches)
• Depth(inches)
• Weight (Lbs)

Possible Variants to Above Estimates:

1. Number of taps
2. Voltages in excess of 600V

Notes:

• Dimensional adjustments can be made to meet size constraints.
• Mounting is possible on any axis as required.

The following graphs are based upon:

• 100 Percent Duty
• 50 Hz Transformer
• 40ºC Ambient with 85ºC Temperature Rise
• Working Voltages of 600V or less
• Open Frame Construction