Saturday 16 September 2017

How to find the exact number of turns for a power transformer


The input and output voltages of a power transformer allow us to derive the ratio of turns on the primary and secondary coils.


My question is how to find the exact number of turns of primary and secondary coils if input and output voltages and power in KVA are given?


For example a transformer with the characteristics Vp=11kV, Vs=400V and power=100KVA. Can we calculate the number of turns from this?




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