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Distribution transformer secondary fault current calculations

Distribution transformer secondary fault current calculations

Distribution transformer secondary fault current calculations

(OP)
Could somebody  recommend good literature for transformer fault current calculations.(best with examples)
I am looking for:
- instructions how to calculate secondary fault currents on single phase distribution transformers, connected to 3-phase grid, using symmetrical components theory. (all available data is in % and per 100MVA base)

-instructions how to calculate secondary fault currents of 3-phase transformer (consisting of 3 single phase transformers) using symmetrical components theory. (all available data is in % and per 100MVA base)

I know how to do simple 3-phase TR, but with different configurations it gets little complicated.
Thanks

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