Month: June 2015

Segregated Phase Bus Duct- Managing the Low and Medium Voltage Requirements

segregated phase bus

Generation and distribution of electricity is of vital importance for everything nowadays. Every enterprise and every household requires electricity. There are various devices and components which are involved in the production and management of electricity as it is a very complex process. Segregated Phase Bus Duct is one such device which is designed for the low and medium voltage requirements.

The purpose of such designs is to meet specific, continuous and short circuit current ratings and generating stations, substations and industrial distribution systems which can be installed indoors and outdoors. In a segregated bus duct, each phase conductor is separated by a grounded barrier from adjacent phases unlike in non-segregated phase ducts where all phase conductors are in the same enclosure. For conducting large currents between devices, a cable bus is used. For very large currents in generating stations or substations, where it is difficult to provide circuit protection, an isolated-phase bus is used. Each phase of the circuit is run in a separate grounded metal enclosure. The only fault possible is a phase-to-ground fault, since the enclosures are separated. This type of bus can be rated up to 50,000 amperes and up to hundreds of kilovolts (during normal service, not just for faults), but is not used for building wiring in the conventional sense.

One of the greatest advantages of bus ducts is that they are capable of adding or removing a branch circuit without removing voltage from the whole duct. It carries large amounts of amperage across a distance. This is useful in plant design so that you can pull individual leads down from it to machinery. The problem with this is control. If it is installed and the plant does not properly keep up on load documentation, it is easy to overload it. Installing bus duct requires the installer to work with and handle high voltages and currents which can cause instant death. Therefore, it should be done with utmost care and all the necessary precautions should be taken.