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Design And Construction Of An Automatic Phase Selector
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1.2 STATEMENT OF THE PROBLEM
The
frequent of power outages in developing countries like the case of
Nigeria creates a need for automation of electrical power generation or
alternative sources of power to back up the utility supply. This
automation becomes important since the rate of power outage becomes
predominantly high. Most industries and commercial processes are partly
dependent on generators and public power supply which is epileptic
especially in Nigeria. Therefore, if the processes of power change-over
between these two power supplying sources are manual, human error during
change-over leading to machine damage, electric shock/electrocution as
well as increased down time consequently introducing massive losses.
However, if the starting of the generator is automatically done by a
relay which switches the battery voltage to ignition coil of the
generator while the main power relay switches the load to either public
supply or generator, the down time would greatly be reduce thereby
maintaining the tempo of production. In view of the background, this
project tends to focus on the design and construction of an automatic
changeover switch with generator cut off and starter.
1.3 AIM AND OBJECTIVES
This project is centered on design and construction of an automatic
change-over switch with generator cut off and starter. However, the
specific objectives are as follow;
1. To design a device that
automatically switches on the generator and switch over the load to the
generator whenever there is mains power failure.
2. To sort and examine various components to be used for the construction of automatic changeover switch
3. To design and integrate the sub-units of the automatic changeover switch
4. To carryout a test on the sub-units design of the automatic changeover switch
1.4 SCOPE OF THE STUDY
The
scope of this project is focus on designing and construction of a
change-over switch with cut off and starter of a generator with the
capacity of 3.5KVA.It also revolves around a project that is designed
for power supply applications. It involves automatic changeover between
the main power supply and an auxiliary power supply, such as a
generator. The project implements an automatic switching or starting of
the power generator whenever the main power fails.
1.5 LIMITATION OF THE STUDY
Some of the limitations of the automatic changeover design are;
1. The design cannot function with a generator that is not auto-start.
2. It does not function properly for a generator higher than 3KVA.
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ABSRACT - [ Total Page(s): 1 ]Automatic phase selector system is used to ensure continuous supply to load in case the mains supply is not healthy. This project is on design and construction of a three phase automatic phase selector with generator starter and cut-off. Power supply in Nigeria and most developing countries of the world is anything but stable. This has adverse effects on the consumers of the electricity and the equipments that are operated from the mains sources of electricity supply in these parts of the world. ... Continue reading---
