CHAPTER ONE
INTRODUCTION
There are many fundamental different types of stabilizers in use some of which are electron mechanically tap changer, solid state tap changer etc. voltage, stabilizer came into being not by normal design and plain, but as a means of solving electrical “Crisis” situation. This crisis situation does rarely occur in developed countries of the world such as Britain, American, Germany etc, why?
Their system of generation, transmission and distribution of electricity is such that a devoid of variation of fluctuation in the supplied voltage. Now, by the definition given by K.G Jackson and R. Feinberg, a voltage stabilizer is a piece device incorporated in a circuit to maintain a constant output voltage from a poorly generated power supply. A voltage stabilizer like any other piece of equipment is a combination of many electrical and like any other piece of equipment is a combination of many electrical and electronic and circuit with the aim of getting the assemble to perform a specified desired task or function.
Therefore a voltage stabilizer consist for four basic unit
1. The transformer unit
2. The control circuit
3. The protective system
4. The display of monitor (which is optional)
1.1 THE TRANSFORMER UNIT
Thereja B.L. defined a transformer as static piece of apparatus by means of which electric power is one circuit is transformed into power 7 some frequency in another circuit. The power can either be raised or covered. If it is referred to as a step-up transformer but if it is lowered, it is referred to as a step transformer being the one applicable to this project work.