Transformers

Discussion in 'Homework Help' started by lolo, Apr 27, 2008.

  1. lolo

    Thread Starter New Member

    Apr 25, 2008
    4
    0
    Can you help me please?

    Q1)
    Three single-phase transformers rated at 250kVA, 7200V/600V, 60Hz are connected in wye-delta on a 12470V, 3-phase line. If the load is 450kVA, calculate the following currents:
    a) In the incoming and outgoing transmission lines.
    b) In the primary and secondary windings.


    Q2)
    Three single phase transformers rated 100kVA, 13.2kV/3.3kV are connected in wye-delta on a 3-phase 15kV line:
    a) What is the maximum load that can be connected to the transformer bank?
    b) what is the outgoing line voltage?
     
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