Discussion at Spring convention: Eight years' experience with protective reactors

J. Lyman: To obtain the minimum concentration of power is an everpresent problem in the design of large power stations, substations, and distribution systems. A circuit breaker must be built, capable of opening its circuit, under any short-circuit conditions, but more serious than the problem of designing adequate circuit breakers are the electrical and mechanical shocks that may be transmitted to the entire electrical system from a modern bulk-power station, or to a power distribution and transmission system, tying-in several such great stations. At least 0.3 sec. elapses before a circuit breaker can operate. During this time the full force of the shock is imparted to the entire system.