Transformer Design and Design Parameters


Ronnie Minhaz, PEng will deliver a presentation 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.

  Date and Time




  • 780 North Commercial Street
  • Manchester, New Hampshire
  • United States
  • Building: PSNH Energy Park
  • Room Number: Five Rivers Auditorium

Staticmap?size=250x200&sensor=false&zoom=14&markers=42.9993864%2c 71
  • Tom Mongeon, P.E. Chairman, New Hampshire IEEE Power & Energy Society
  • Registration closed


Ronnie Minhaz

Ronnie Minhaz of Transformer Consulting Services Inc (

Biography: 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 of Transformer Consulting Services Inc (




6:00 Pizza and refreshments

6:30 Presentation - Transformer Design and Design Parameters

8:00 Questions and Answers

8:15 Adjourn