All the companies are very much concerned to reduce the operation & maintenance cost of installed equipment and try to get the best efficiency from equipment; in this task they are using different protection and sensing equipments, but quality & purity of electrical power is most important factor for reducing the operation and maintenance cost as well as important factor for affecting the efficiency of installed equipments. Output of electric equipments are very much depends upon the quality of power as ell as neutral connectivity of system. If the electric power having the impurity and weak neutral connectivity than electric equipments will be not able to work with its maximum efficiency.
In today’s industrial atmosphere electronic loads are increasing drastically, due to this purity of electrical energy get disturbed and polluted For this purpose Isolation transformer is a very good equipment. An isolation transformer is a transformer used to transfer electrical power from a source of AC power to some equipment or device while isolating the powered device from the power source, usually for safety, Isolation transformer also block transmission of the DC component in signals from one circuit to the other, but allow AC components in signals to pass.          
                                                                         To be Continued…………………………………….