CONSTRUCTION OF AN AUTOMATIC CHANGE-OVER SWITCH

CONSTRUCTION OF AN AUTOMATIC CHANGE-OVER SWITCH

TABLE OF CONTENTS

Title page                                                                                          i        

Certification                                                                                                ii

Dedication                                                                                         iii

Acknowledgement                                                                                      iv

Abstract                                                                                            v

Table of Contents                                                                             vi

CHAPTER ONE

1.0     Introduction                                                                                      1

1.1     Aims and objectives                                                                2

1.2     Significance of the project                                                       4

1.3     Scope and limitation                                                               4

CHAPTER TWO        

2.0     Literature review on automatic change over switch                          6

2.1     Review of related literature                                                     6

2.2     Basic principle of automatic change over system                    8

2.3     Types of change over system                                                  9

2.4     Contactor                                                                                11

2.5     Timers                                                                                     14

2.6     Circuit breaker                                                                        15

2.7     Indicator lamps                                                                       17

2.8     DMM                                                                                                17

CHAPTER THREE

3.0     Design methodology                                                                19

3.1     System block diagram                                                             20

3.2     Contactor wiring diagram                                                       22

3.3     Design diagram and analysis                                                   23

CHAPTER FOUR

4.1     Result analysis                                                                        25

4.2     Casing and packaging                                                             26

4.3     Assembling of sections                                                            26

4.4     Construction of the casing                                                       27

4.5    Testing and result                                                                    27

4.6     Problems encounter                                                                 29

•      Trouble shooting and remedy                                                  30

4.8     Maintainability                                                                       31

CHAPTER FIVE

5.0     Conclusion                                                                              32

5.1     Recommendation                                                                    32

REFERENCES