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Format: MS WORD
| Chapters: 1-5
| Pages: 65
DESIGN AND CONSTRUCTION OF AN AUTOMATIC CHANGE-OVER SWITCH WITH GENERATOR CUT OFF AND STARTER
CHAPTER ONE
INTRODUCTION
1.1 Background of the Study
Public power supply is a major contributor to economic development in every nation. In developing nations like Nigeria, Ghana, Cote d’Ivoire and under developed parts of the world, the public power supply for industrial, commercial and domestic use is highly unstable (Peter, 2002). This has negative effect on the economy in such that most of them had to depend on frequent use of alternative power sources such as generator, inverter, solar to meet up with the energy demands. One of the common alternate sources depended on is the use of generator set which is usually connected to a changeover switch and the public power supply also connected to the switch also. The application of alternative sources of power supply is being faced with the challenge of switching smoothly and timely between the mains supply and the generator supply whenever there is power failure on the mains source and vice versa. (Ransorne, 2009).
Automatic Changeover switch with generator cut off and starter is one of the electrical devices that can aid smooth switching from public supply to generator and vice versa. It automatically switches from one power source to another. When there is power failure in the public supply it starts the generator and switches to the supply (generator) and it equally switches over to the mains supply when power is restored and turns off the generator automatically. The automatic power changeover switchwith generator cut off and starter is a device that links the load and mains supply or the alternative supply together. This enables the use of either the mains supply or an alternative source when there is outage on the mains source without the user intervention. The changeover switch can either come in with three phase or single phase. This device maintains constant power supply to the load by automatically activating the generator when there is need. Since the user might not always be in need of the generator, provision has been made to prevent the generator from starting should an outage occur. Therefore, in view of these considerations, the project aimed at designing and constructing a workable automatic change-over switch with
CHAPTER ONE
INTRODUCTION
1.1 Background of the Study
Public power supply is a major contributor to economic development in every nation. In developing nations like Nigeria, Ghana, Cote d’Ivoire and under developed parts of the world, the public power supply for industrial, commercial and domestic use is highly unstable (Peter, 2002). This has negative effect on the economy in such that most of them had to depend on frequent use of alternative power sources such as generator, inverter, solar to meet up with the energy demands. One of the common alternate sources depended on is the use of generator set which is usually connected to a changeover switch and the public power supply also connected to the switch also. The application of alternative sources of power supply is being faced with the challenge of switching smoothly and timely between the mains supply and the generator supply whenever there is power failure on the mains source and vice versa. (Ransorne, 2009).
Automatic Changeover switch with generator cut off and starter is one of the electrical devices that can aid smooth switching from public supply to generator and vice versa. It automatically switches from one power source to another. When there is power failure in the public supply it starts the generator and switches to the supply (generator) and it equally switches over to the mains supply when power is restored and turns off the generator automatically. The automatic power changeover switchwith generator cut off and starter is a device that links the load and mains supply or the alternative supply together. This enables the use of either the mains supply or an alternative source when there is outage on the mains source without the user intervention. The changeover switch can either come in with three phase or single phase. This device maintains constant power supply to the load by automatically activating the generator when there is need. Since the user might not always be in need of the generator, provision has been made to prevent the generator from starting should an outage occur. Therefore, in view of these considerations, the project aimed at designing and constructing a workable automatic change-over switch with
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