Raising fault capacity with air-core reactors

IN AN expanding industrial plant, it frequently becomes necessary to increase the transformer capacity at a substation to care for heavier power demands at some particular location. An increase in the power capacity of the substation in turn increases the potential short-circuit kilovolt-amperage that might be applied to the substation bus. An increase in the capacity of the primary system furnishing power to the substation transformer also can increase the potential short-circuit kilovolt-amperage available on the secondary bus.