I am not sure of what your question is but will give it a try:I feel dumb on this one, but all my reference material explains pu as being actual / base. So why is the solution found by taking the base / actual?
My texts show solving for per unit values by dividing the actual by the base value. In this problem it says that the transformer is 25MVA and that we are on a 100MVA base. I don't understand why it is not solved by:I am not sure of what your question is but will give it a try:
Sorry man. I might be shooting blanks here but from what I remember (was tangled in that same game of words), when they gave you the ratings of the transformer they said it was rated at 25MVA. That makes 25MVA your actual MVA base. Now you have to convert to the new one, that is 100MVA.My texts show solving for per unit values by dividing the actual by the base value. In this problem it says that the transformer is 25MVA and that we are on a 100MVA base. I don't understand why it is not solved by:
8% * (25MVA/100MVA)
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