ABSTRACT
The main aim of any
electric power supply in the world is to provide uninterrupted power
supply at all times to all its consumers. Although, in developing
countries, the electric power generated to meet the demands of the
growing consumers of electricity is insufficient, hence power
instability and outage.
Power instability or outage in general
does not promote development in the public and private sector. The
investors do not feel secure to come into a country with constant or
frequent power failure. These limit the development of industries. In
addition, there are processes that cannot be interrupted because of
their importance for instance, surgery operation in hospitals, transfer
of money between banks and lots more.Power instability and outage in
developing countries (Nigeria) creates a need for alternative sources of
power to backup the mains supply.
Automatic changeover
switches find a wide application scope wherever the reliability of
electrical supply from the utilities is low and it is used in
lighting/motor circuits wherever continuity of supply is necessary, for
switching to an alternative source from main supply and vice versa.
This
project is a design of an automatic changeover switch. This means that
when there is any mains failure, the automatic changeover switch will
change to an alternative power supply (Generator), and back to the main
supply when it is restored.
The purpose of this project is to
maintain constant supply to the main circuit that is being supplied by
making-up for the time lapse or delay that usually accompanies the
manual switching from one source to another.
The design
comprises of the power connection circuit and control connection
circuit. The main components to be used include; contactors, relays and
timer.
TABLE OF CONTENT
Title Page
Certification
Dedication
Acknowledgement
Table of Content
Abstract
Chapter One: Introduction
1.1 Project Aims and Objectives
1.2 Target Beneficiaries.
Charter Two: literature Review
Chapter Three: Design of an Automatic Changeover Switch
3.1 Problem statement/Design problem
3.2 Relevance of project
3.3 Method of solution/Design procedure
3.4 Theory of devices
Chapter Four: Components selection and computational results
4.1 Selection of components
4.2 Observation
4.3 Results
4.4 Discussion of results obtained
Chapter Five: Conclusion and Recommendation
References
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