Transformer Design and Manufacturing


This February the Twin Cities Power and Energy Society will be hosting a lecture on Power Transformer Design and Manufacturing, presented by Ronnie Minhaz.  Please join us for this excellent event!


The presentation will be given in two parts:

Part 1:

Title: Transformer Design and Design Parameters

Abstract: The presentation will be on the Basic of Transformer Design. The presentation will explain how a transformer designer interprets parameters such as MVA, lightning Impulse, Switching impulse, Percentage Impedance supplied by a customer. It will touch on Power rating[MVA], Core, Rated voltages, Insulation Coordination, Short-circuit Impedance, Short-circuit Forces, Loss evaluation, Temperature limits, Cooling, Sound Level .. etc. It will also explain overload and life expectancy of a transformer as well when Delta winding is needed in Wye-Wye connection. The presentation will answer why in North America we like to regulate from low voltage side whereas in Europe regulates from high voltage side.

Part 2:

Title: Transformer Manufacturing Processes

Abstract: The presentation will be on the Industry wide manufacturing process to build a transformer in the shop floor. Processes will cover Core Construction, Insulation, Windings, Core and Coil, Processing, Tanking, Testing and Shipping. Some of the hold-points during the processes will be explained as well what a customer should look into while doing factory inspection. The presentation will also cover reconnection both in LV and HV, LTC Tap changer both in tank and separate tank, Lead works.


Cost: $5 for IEEE members and students, $10 for non-IEEE members.

Lunch will be provided.  Registration is required - please register using the link below.  

  Date and Time




  • Date: 26 Feb 2015
  • Time: 12:00 PM to 04:30 PM
  • All times are (GMT-06:00) US/Central
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  • 414 Nicollet Mall
  • Minneapolis, Minnesota
  • United States 55416
  • Building: Xcel Energy
  • Room Number: Lower Level Bay 2

  • For questions regarding the event, please contact Jake Bernhagen (

  • Starts 21 January 2015 10:00 AM
  • Ends 25 February 2015 12:00 PM
  • All times are (GMT-06:00) US/Central
  • 1 space left!
  • Admission fee ?
  • Menu: Vegetarian, Non-Vegetarian


Ronnie Minhaz Ronnie Minhaz


Transformer Design & Manufacturing


Ronnie holds B.Sc. degree in Electrical Engineering from University of Manitoba, Canada. Before founding his own company “Transformer Consulting Services Inc(”, Ronnie worked as Transformer Designer at Pauwels Canada(Manufacturer), as Equipment Engineer at SNC Lava Lin(EPCM) and Enmax Power(Utility), as Substation Lead Engineer at McGregor Construction(Substation Construction). Ronnie is a registered professional engineer in the province of Alberta, Canada and an IEEE member. Ronnie held various leadership positions at IEEE Section level and a regular member of IEEE PES society.


Ronnie Minhaz


Transformer Design & Manufacturing




 12:00 - 12:30 = Lunch

12:30 - 2:30 = Part 1: Transformer Design and Parameters

2:30 - 4:30 = Part 2: Transformer Manufacturing Processes