SPEL excels in manufacturing and supplying custom designed Bus Ducts and Bus Bars. Our product range includes Isolated Phase Bus (IPB) and Segregated Phase Bus (SPB) Ducts.

bus bars

All Aluminium Tubular or Flat Bus Bars are supplied in customer specified cut lengths, Alloy and Temper.

isolated bus ducts

Here each phase is a separate conductor, enclosed individually in an enclosure. Conductors are usually hollow fabricated profiles. Supported within the housing by insulators. Isolated-phase bus is made in ratings from 3000 amperes to 45,000 amperes, and rated for voltages from 5000 volts up to about 35,000 volts. A smaller form of isolated-phase bus is manufactured for use with direct-current circuits; this may be used in the field circuit of a generator.

segregated bus ducts

In the segregated phase bus, all the three phases R Y B are enclosed in a single enclosure. Physically separated by nonmagnetic barrier.