DESIGN AND CONSTRUCTION OF SINGLE PHASE AUTOMATIC CHANGE OVER SWITCH FROM GENERATOR TO POWER HOLDING COMPANY OF NIGERIA (P.H.C.N)

DESIGN AND CONSTRUCTION OF SINGLE PHASE AUTOMATIC CHANGE OVER SWITCH FROM GENERATOR TO POWER HOLDING COMPANY OF NIGERIA (P.H.C.N)

ABSTRACT

Most industrial and commercial processes rely on electrical power. In the event of a power outage, the transfer of power from a public utility to a generator is usually done manually, resulting in lost time. Furthermore, human error causes mechanical and household appliance damage. These can result in significant losses. This paper describes the design and construction of an automatic single phase change over switch that transfers electrical power from the public grid to a generator in the event of a power outage or insufficient voltage. The system is powered by electromechanical devices.

CHAPTER ONE

INTRODUCTION

The requirement for sufficient power supply with minimal delay in switching to an alternative service results in a system that can experience the delays and losses that occur in the event of a public power outage.

However, power insecurity in developing countries necessitates the automation of electrical power generation or the use of alternative power sources to supplement utility supply. This automation is required as the frequency of power outages increases. Most households, industrial and commercial process departments on power supply and the changeover process are manual, which not only wastes time but also causes device or machine damage due to human error during the change over connections, which could result in massive losses. The source is separated by this changeover switch system. When there is a power outage from the public supply, with the installation of this system at homes, offices, or industries, no man power is required to change the load line to the generator line; thus, when the power supply is restored, someone must turn off the generator while the system switches itself to the public supply.