Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations TugboatEng on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  • Users: volkanksr
  • Content: Threads
  • Order by date
  1. volkanksr

    Three Winding Transformer Impedance Calculation

    Hello everybody, I need to calculate %R+ resistance and %X+ reactance values of primary-secondary, primary-tertiary and secondary-tertiary windings. Transformer information : 120/60/60 MVA 154/11/11 kV Uk: 16%/16%/16% Po: 40 kW Pk: 400 kW Io: %0.25 Please send your calculation results...
  2. volkanksr

    Generator Grounding Method

    We have 2*62.5 MVA Transformer, 2*12 MW Generator and lots of big motors and loads in our power plant. Transformers are YNd,generators are connected to D side and we are discussing about grounding of generators. Should we use hybrid, solid or high resistance ground for generators? Or should we...
  3. volkanksr

    Transformer Choice

    Hello everybody, What is the rule and limitations of chosing TR vector group. For example i will use a YNd transformer %6 Uk 33/0.4 kV but i don't know which vector group to choose. YND11 or 1 0r 5 ? Thanking you in advance
  4. volkanksr

    Earth Fault Current Value at Star-Delta System

    Hello everybody, I have 132/6.6 kV 40 MVA YNd11 main transformer and 250 kVA ZNyn1 Auxilary Earthing transformer connected to main transformer at 6.6 kV side. I'm trying to calculate the earth fault current values but i calculate only 3 amps.But when i use a zigzag grounding instead of ZNyn1...

Part and Inventory Search

Back
Top