• DESIGN AND CONSTRUCTION OF A 60A THREE PHASE AUTOMATIC CHANGEOVER SWITCH USING COMPARACTOR


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    • ABSRACT - [ Total Page(s): 1 ]This project work is on the design and construction of a 60A automatic changeover for 3-phase power supply. It provides a means of switching from one phase of AC mains to another in the case of failure in the existing phase; This project has been improved on the existing types of electromechanical device that has being in use over the years. Hence this has been achieved by the use of operational amplifier, timing circuit and high current relay switches and it is powered by 12V dc power supply.The aim of this work is to design and construct an Auto changeover introduces an automatic solution t ... Continue Reading

         

      TABLE OF CONTENTS - [ Total Page(s): 1 ]TABLE OF CONTENTS TITLE PAGEAPPROVAL PAGEDEDICATIONACKNOWELDGEMENTABSTRCTTABLE OF CONTENTCHAPTER ONE1.1 INTRODUCTION1.2 AIM/OBJECTIVE OF THE PROJECT1.3 SIGNIFICANCE OF THE PROJECT 1.4 APPLICATION OF THE PROJECT1.5 LIMITATION OF THE PROJECT1.6 ADVANTAGES OF THE PROJECT1.7 SCOPE OF THE PROJECT1.8 PROJECT ORGANIZATIONCHAPTER TWOLITERATURE REVIEW2.1 REVIEW OF CHANGEOVER2.2 HISTORICAL BACKGROUND OF AN AUTOMATIC CHANGEOVER2.3 REVIEW OF ELECTRICAL PHASES2.4 REVIEW OF THREE-PHASE ELECTRIC POWER 2.5 POWER SUPPLY UNIT2.5.1 THE RECTIFYING UNIT2.5.2 THE SMOOTHING UNIT2.5.3 THE REGULATOR AND REGULATEDCH ... Continue Reading

         

      CHAPTER ONE - [ Total Page(s): 1 ]INTRODUCTIONIn Nigeria today the problems of power outage across phases is so rampant thus leading to some sensitive equipment and appliances being redundant, this could sometimes be the cause of one phase going out with respect to the other.It may surprise one to note that in an attempt to solve this problems, so many unskilled electricity consumers has  in recent past resorted to some crude means of swapping between phases to obtain power. So many souls have been lost in this act. This is an undesirable condition to consumers and the need now arises to design a device that can automatically ... Continue Reading