Bus bar
Bus bar
- Is a static element
which is used to carry a bulk of electrical power due to it is capability of
caring large a mounts of are pery. it is a three bars represents the three
phase feeding feeder and may be fixed in ceilings or walls in a flat form using
insulators
Bus bar may be made of Copper or Aluminum.-
Service entrance and single
load:-
Feeder busduct brings power from utility trans
formers into a main distribution swit board ( service entrance) feeder bus duct
are normally used for feeding loacls that are connected in one area . typical
connections are switchboard- switchedboard tie runs or a switchboard feeding a
remote motor control center or large load (single load).
Bus bar advantages:-
- Less man hours for installation
:
Bus
ducts are built to fit customer specific
layout needs . its delivered to the site
ready for
installation . bus ducts installation needs only about 40% of the labor
required to install cables and trays.
- compact size:-
due to
it is sandwich design ,bus ducts have very compact cross sectional sizes and they
occupy for less space compared with
multiple.
- Reusable expandable:-
As distribution May need changes , existing bus
ducts runs can be eaoily related or extended by adding new section.
- Lower installation cost:-
The saving in
labor can generate a total installation cost reduction of as much as 40% compared with cables.
- Copatitive at any rating:
When reviewing material cost alone, busduct may cost more
than cables and trays. However it is the
resection in the number of man hours required for installation that provides a
significantly lower installation cost . also the cable minimum curvature radius
make the busduct path less by 5- 20% for runs with many elbows.
