Abstract: Heretofore it has not been commercially feasible to apply air-type breakers of the 5,000-volt class to circuits capable of producing short-circuit currents equivalent to 250,000 kva. However ...
Abstract: AIR CIRCUIT BREAKERS rapidly are becoming the standard of the industry for voltages up to 15,000 volts and for kilovolt-ampere ratings of 50,000 to 500,000 kva. Their general desirability as ...