Saad Ahmed

Experience

• 

  Siemens (Pakistan)

  May 2011 - May 2015

  Mechanical Design Engineer

  • Developed Mechanical design of power transformer up to 40MVA, 132KV class.• Computed calculations including stiffened tank wall, reinforced tank bottom, lifting elements, core clamping frames, heat emission by radiators, expanded oil and selection of oil expansion tanks.• Worked on Pro-Engineer (Pro/E) based, standard design Platform (SDP) using 3d parametric models of power transformers.• Developed detailed fabrication and assembly drawings, using SDP via Pro/E (Pro-Engineer).• Created 3d Parametric Models and standard library of parts for distribution transformer range, using Autodesk INVENTOR.• Worked in collaboration with vendors for outsource development of steel parts. عرض أقل

• 

  SPTC

  May 2015 - now

  Senior Mechanical Design Engineer

  • Develop complete mechanical design of oil immersed power transformer up to 133 MVA, 230 KV class in compliance with customer specifications (typically Saudi Aramco and Saudi Electric Company) including offshore transformers.• Design retrofit transformers with various termination arrangements (Oil-Air / Oil-Oil / Oil-SF6) as per site condition/customer requirement.• Compute mechanical calculations for structural design of tank, core-coil clamping frame, cooling and volumetric thermal expansion of insulating fluid.• Use NX 8.5 for 3d modeling of transformer’s tanks and extraction of drawings. • Finite element analysis (FEA) of critical parts using ANSYS for design improvement and material optimization.• Work on CREO for developing models and drawings of core-coil assembly / Active part.• Conduct site surveys and provide optimum solution for retrofit transformers.• Address shop floor and field quality issues and take necessary design measures to enhance product quality and/or reduce manufacturing and material cost.• Standardization of mechanical parts and development of general drawings.• Select appropriate transformer’s protection accessories and prepare Bill of materials of complete transformer.• Good knowledge of Power transformers International standards IEEE and IEC. عرض أقل