1, draw a computational circuit diagram. The rated parameters of each component considered in the short-circuit calculation are represented and the components are numbered in turn. <br>(2) To determine the short circuit calculation point. The selection of short-circuit calculation points allows the electrical component stoop to pass through the electrical component stoop to the maximum possible. <br>3, according to the selected short-circuit calculation point to draw the equivalent circuit diagram, and calculate the main components of the circuit impedance. <br>4, the equivalent circuit is simplified, the equivalent total impedance is derived, the calculation of short-circuit current and short-circuit capacity.
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