Laboratory and Field-Test Experience with High-Capacity Isolated Phase Busses

The isolated phase generator bus which has become a standard method for connecting generators to transformers is undoubtedly the safest and most satisfactory method of making this connection that has been developed. There are, however, several problems that have arisen with the advent of high currents normal to the large generators now being installed. The series of tests herewith discussed covers certain phenomena of induced and magnetic heating that may be encountered with the use of these high amperage busses, and also discusses the problems of field pressurizing of bus systems.