Induced currents in high-capacity bus enclosures

IN RECENT YEARS the air-insulated metal-enclosed high-capacity bus has come into wide use in central stations. These busses are built in a variety of designs with three basic configurations: nonsegregated phase, segregated phase, and isolated phase. They vary mainly in construction between phases. In addition to this, the only outstanding difference is the presence or absence of considerable circulating current in the bus housings.