FEEDER PROTECTION FROM OVER LOAD AND EARTH FAULT RELAY

Abstract

A busbar in electrical power distribution refers to thick strips of copper or aluminum that conduct electricity
within a switchboard , distribution board , substation, or other electrical apparatus.
In this project bus bar can be protected from the over current condition. Industrial instruments failures have many
causes and one of the main causes is over load.
The primary of the distribution transformer or any other transformer is designed to operate at certain specific current, if
that current flowing through that instrument is more than the rated current, then immediately the System may burn
because of over load, through this project we are going to protect the bus bar from over load condition.
In this project work for generating high current more loads are applied to the circuit; so that the current will be
increased. Whenever the over current occurred the circuit will be tripped.
To trip the circuit, we are using one relay which will control through our microcontroller. When over load is occurred
relay will trip the total circuit and buzzer will on to indicate over load.