BY
 
EGBUDIWE INNOCENT .N
EE/2007/181
 
BEING A PROJECT SUBMITTED IN PARTIAL FULFILMENT OF THE REQUIREMENT FOR THE AWARD OF BACHELOR OF ENGINEERING (B.ENG) DEGREE IN ELECTRICAL/ELECTRONIC ENGINEERING CARITAS UNIVERSITY, AMORJI-NIKE ENUGU.

   
AUGUST 2017
      

 

CERTIFICATION

This is to certify that this work was carried out by, EGBUDIWE .N. INNOCENT of the department of Electrical/Electronic Engineering, Caritas University Amorji-nike, Enugu.
 
___________________                                   Date: _____________

Engr. E.C. Aneke 

Project Supervisor

___________________                                  Date: ________________ 
Engr. C.O Ejimofor 
Head of Department
 
__________________                                   Date: ________________
External supervisor                                              
 

DEDICATION

The work is dedicated to the almighty God who with all his conglomerate efforts made my dream come true.

ACKNOWLEDGEMENT

My Profound gratitude goes to God Almighty who gave me good health and the strength throughout the period of this project. To my parents and siblings, I say a very big thank you for your financial and moral support during and after the completion of this project. 

My special thanks also go to my supervisor Engr. E.C Aneke and together with all other lecturers of the department.

 

Looking at fuses, one cannot determine whether it is blown or not unless a resistance test is been conducted using meter. Apart from using meter another method is by using a fuse blown indicator which is an electronics circuit to display the condition of the fuse. This device indicate when there is blown fuse, it will show the condition of fuse through LEDs.

 

 

 

 

CHAPTER ONE
INTRODUCTION
A fuse is a type of over-current protective device that is designed to be a sacrificial element in an electrical power system. Fuses are designed to open circuits when excessive currents are present due to over-currents, and in this manner are designed to prevent further damage to the system that might result if the fuse were not present. Fuses are sacrificial in that they are generally good for one time use and are destroyed in the process of operating. The use of fuses in a circuit provides cheap insurance should there be an accidental or unintentional fault in the system wiring or components.
According to the fuse standard IEC 60269-1, a fuse is “a device that by fusing of one or more of its specially designed and proportioned components opens the circuit in which it is inserted by breaking the current when this exceeds a given value for a sufficient time. The fuse comprises all the parts that form the complete device”.
This means that by definition, the term ‘fuse’ is inclusive of all of the components that work to protect the circuit from over-currents. This consists of a fuse base or fuse mount, the fuse link and where applicable, replacement handles, the fuse carrier or covers.
The disadvantages of fuses are being inadequate to safely, efficiently assume the load of many modern electrical systems and difficult to identify once blown. This focus of this work is designing a device for monitoring when an AC fuse is blown or not.
This consists of two electrically isolated power sensors for sensing the presence of electrical power. One of the power sensors is connected before the fuse to be monitored and the other after the fuse. The power status from these sensors is fed to a microcontroller. Microcontroller continuously monitors the status of these two sensors. If the power status of second sensor is low and the first sensor is high, then the microcontroller identifies this as a break in fuse circuit and sends an appropriate message to a Computer connected to it. If both the sensors output goes low then microcontroller identifies this as power supply failure and sends the appropriate message to the Computer.
Once the data is available with computer, we can use this data to send e-mail to the concern personal about the fault. The storage of power status information in computer also helps in viewing historical data.

1.2                             OBJECTIVE OF THE PROJECT
The purpose of this project is to alert the remote user incase of a fuse in a critical electrical equipment got fused

1.3                          SIGNIFICANCE OF THE PROJECT

1. Real-time fuse monitoring.
2. Alarming in fuse blown situations.
3. Sending the status of the fuse to the user

1.4                           APPLICATION OF THE PROJECT
For the security of life and properties, this device can be used in the following places such as:

1. Homes
2. Offices
3. Worship places
4. Industries, etc.

1.5                          PROJECT WORK ORGANISATION
The various stages involved in the development of this project have been properly put into five chapters to enhance comprehensive and concise reading. In this project thesis, the project is organized sequentially as follows:
Chapter one of this work is on the introduction to the study. In this chapter, the background, significance, objective limitation and problem of the study were discussed.
Chapter two is on literature review of this study. In this chapter, all the literature pertaining to this work was reviewed.
Chapter three is on design methodology. In this chapter all the method involved during the design and construction were discussed.
Chapter four is on testing analysis. All testing that result accurate functionality was analyzed.
Chapter five is on conclusion, recommendation and references.

 

 

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