Technical FAQs

Ask a Question

Video: How to use the on-line Buck Boost Calculator for selecting Buck and Boost transformers.

How do you select a Buck Boost transformer, using the on-line Buck Boost Calculator

Product Line:

Buck and Boost transformers

Product selection

Buck Boost Electronic Calculator, Calculates proper Square D Transformers to use when doing small changes in voltage: 5%, 6.6%, 10%, 13.3%, 20%, and 26.6%

Part One - Overview of the Buck Boost Calculator:

Part Two - Using the Buck Boost Calculator:

Part Three - Wiring Diagrams in the Buck Boost Calculator:

Step One: Single Phase or Three Phase Application
IF Three Phase:
Three wire source: Must use Open Delta
Four-wire source:
Use Open Delta if only need three wires for load
Use Wye configuration for all four-wire applications.
Note: Wye configurations offer expanded kVA Capacity - so try if Open Delta does not meet your requirement.

Step Two: Input Source Voltage

Step Three: Start changing the voltage change percentage until desired voltage appears in either the buck or boost windows (Exact voltage might not appear, please pick closes voltage: 240 required from 208, 236 is closest voltage)
Step Four: Choose the voltage that will be used. (Buck or Boost)

Step Five: Input Load Amps
Calculate Load Amps by inputting Load kVA

Step Six: If source is 50Hz click yes for required

Calculator will then calculate Proper Square D Buck Boost Transformer and wiring diagram.

The OUTPUT from Tool provides:
Part number
Units required
kVA capacity using the diagram
Wiring Diagram
Options for printing and e-mailing
Was this helpful?
What can we do to improve the information ?