OPS recently completed Basic Principles of Transformer Design Seminar!

The event took place October 25th and 26th at the Crowne Plaza in Cleveland Ohio and was a great success.  We will announce upcoming seminars here on our website.  Thank you for all who attended for inquiries, please visit:











Basic Principles of Transformer Design: Derivation & Application of the Equations Used in the Transformer Design Process.

After attending this seminar, you will feel confident to design without any application tools or software programs. This seminar is intended for technical personnel who want to learn and review the basic principles of transformer design, enabling a transition to using the OPS programs more effectively. Having this ability will allow you to see where we derive the complex calculations and framework used to build our programs, and will provide you with more in depth knowledge of how the programs are able to save you time on money on your designs. We will be providing design examples and concepts of transformer design using hand calculations.

Topics will include in-depth discussions on:

     • Basic Magnetic Relationships
          A. Magnetic Flux
          B. Field Intensity
          C. Permeability
          D. Induced Voltages
     • Derivation of Basic Design Expressions
          A. Volts Per Turn
          B. Power
          C. Ampere-Turns
     • Equivalent Circuit
          A. Vector Diagrams of Voltage Relationships
               1. Primary Voltages
               2. Secondary Voltages
          B. Design Effects due to Core Loss, Excitation Loss, Resistance, and Leakage Reactance
          C. Solutions for Finding Induced Voltages and Secondary Output Voltages
     • Core Considerations
          A. Construction
               1. Tool Made Laminations
               2. Wound Cores
                    a. Cut C Cores
                    b. Distributed Gap Cores
                    c. Toroids
               3. Lay-up Cores (Strip)
          B. Materials
               1. Grades
               2. Gauges
               3. Alloys
          C. Core-C oil Construction
               1. Simple
               2. Core
               3. Shell
               4. Three-Phase
     • Conductor Type
          A. Shapes
               1. Round
               2. Square
               3. Rectangular
               4. Foil or Strip
          B. Materials
               1. Copper
               2. Aluminum
          C. Relative Properties
               1. Conductivity
               2. Weight
               3. Cost
          D. Conductor Insulation
               1. Film
               2. Wrap
               3. Combinations
     • Size Relationship
          A. Frequency
          B. Temperature Class
          C. Regulation
          D. Voltage Level
          E. Construction
          F. Power Relationship
     • Design Calculations
          A. Size
               1. Power Rating
               2. Core Size
               3. Turns
               4. Wire Size
          B. Coil Design
               1. Coil Length
               2. Winding Length
               3. Turns per Layer
               4. Number of Layers
               5. Layer Insulation Thickness
               6. Section Insulation Thickness
               7. Winding Build
               8. Mean Turn
               9. Wire Length
              10. D.C. Resistance
              11. Wire Weight
              12. Total Coil Build
          C. Core Characteristics
               1. Core Weight
               2. Core Losses
                    a. True Watts
                    b. Excitation (Apparent Losses) VA
          D. Transformer Characteristics
               1. Conductor Losses
                    a. Resistive Losses
                    b. Eddy Losses
                    c. Total Conductor Losses
               2. Leakage Inductance
               3. Voltage Drops
                    a. Resistive
                    b. Reactive
               4. Output Voltages
                    a. Primary Induced Voltage
                    b. Secondary Induced Voltage
                    c. Secondary Output Voltage
               5. Voltage Regulation
                    a. No-Load Voltage
                    b. Percent Regulation
               6. Efficiency
               7. Temperature Rise
          E. Convection and Radiation Coefficients
          F. Transformer Cooling Surfaces
          G. “J” as a function of VA rating
     • Complex Calculations
          A. Effect on VA Rating
          B. Effect on Voltages
     • Effect of Core Losses on Primary Power Factor
     • Effects of Coil Cooling Ducts
          A. Effects on Temperature Rise
          B. Effects on Impedance

Who should attend?
• Engineers interested in derivation and application of the equations use in the transformer 
  design process step by step.
• Engineers with intermediate knowledge of designing transformers.
• Engineers looking to familiarize designing transformer by using hand calculations
• Engineers new to OPS or will be using OPS in the future.    

Registration must be received no later than October 8, 2018. 
For inquiries, please email or use the following link:

We are looking forward to seeing you at the event!

OPS Team