Available fault current

ORIENT

What this module is for

Estimate available fault current and identify which inputs move it most.

PREDICT

Predicting before you experiment is what makes the result stick. There is no penalty for being wrong here.

Adding conductor length between the transformer and the fault point will:

Increase available fault currentDecrease available fault currentLeave it unchangedOnly change the X/R ratio

EXPERIMENT

Run a sensitivity study on available fault current.

CHECK

A lower transformer impedance results in:

Lower fault current and worse regulationHigher fault current and better regulationHigher fault current and worse regulationNo change to either

APPLY

Explain how an equipment interrupting rating decision depends on the results you just produced.

Your reflection

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