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These panels are distributed over various sections of an industry in order to supply the power to individual installed systems and are connected through cable ducts. In an industrial electric power system, electric power is supplied from either private utilities or public utilities, or both.The supplied voltage is in the range of 11KV, 33KV, 66KV or 132KV.ACBs (Air Circuit Breaker) consist of necessary bus bars to connect the terminals with bolted type neutral links.
These LT panels are responsible for distributing the power to various sub LT panels by receiving it from the transformer.
These are rated for 430 V, 3-phase, 50Hz three or four wire system.
In the above figure, the elements in this Various transformers supply is given to the LT panels, which acts as a main switching system for entire power distribution scheme and carries the total load demand.
We will discuss the elements inside of the LT panels in brief later in this article.
These high voltages are stepped down to a low voltage using step-down transformers.
The voltages in the range of 440 volts or below are called as low tension systems.
Today we are intended to take you to the industrial environment by giving the picture of how an electric power distributed in industries.
In industries, electrical panels play a major role in distributing the power that houses various equipments such as bus bars, circuit breakers, meters, etc.
The bus bars can be run at either top or bottom, or both sides of the panel, but mostly top side bus bars takes the transformer supply while bottom side bus bars take the supply from DG (Diesel Generator) set.
It couples one bus bar with other bus bar of different source (but the rating should be same) without creating any arcs or interruption to the supply system.